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CVE-2024-40958 (GCVE-0-2024-40958)

Vulnerability from cvelistv5 – Published: 2024-07-12 12:32 – Updated: 2026-08-05 11:34
VLAI
Title
netns: Make get_net_ns() handle zero refcount net
Summary
In the Linux kernel, the following vulnerability has been resolved: netns: Make get_net_ns() handle zero refcount net Syzkaller hit a warning: refcount_t: addition on 0; use-after-free. WARNING: CPU: 3 PID: 7890 at lib/refcount.c:25 refcount_warn_saturate+0xdf/0x1d0 Modules linked in: CPU: 3 PID: 7890 Comm: tun Not tainted 6.10.0-rc3-00100-gcaa4f9578aba-dirty #310 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.15.0-1 04/01/2014 RIP: 0010:refcount_warn_saturate+0xdf/0x1d0 Code: 41 49 04 31 ff 89 de e8 9f 1e cd fe 84 db 75 9c e8 76 26 cd fe c6 05 b6 41 49 04 01 90 48 c7 c7 b8 8e 25 86 e8 d2 05 b5 fe 90 <0f> 0b 90 90 e9 79 ff ff ff e8 53 26 cd fe 0f b6 1 RSP: 0018:ffff8881067b7da0 EFLAGS: 00010286 RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffff811c72ac RDX: ffff8881026a2140 RSI: ffffffff811c72b5 RDI: 0000000000000001 RBP: ffff8881067b7db0 R08: 0000000000000000 R09: 205b5d3730353139 R10: 0000000000000000 R11: 205d303938375420 R12: ffff8881086500c4 R13: ffff8881086500c4 R14: ffff8881086500b0 R15: ffff888108650040 FS: 00007f5b2961a4c0(0000) GS:ffff88823bd00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055d7ed36fd18 CR3: 00000001482f6000 CR4: 00000000000006f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: <TASK> ? show_regs+0xa3/0xc0 ? __warn+0xa5/0x1c0 ? refcount_warn_saturate+0xdf/0x1d0 ? report_bug+0x1fc/0x2d0 ? refcount_warn_saturate+0xdf/0x1d0 ? handle_bug+0xa1/0x110 ? exc_invalid_op+0x3c/0xb0 ? asm_exc_invalid_op+0x1f/0x30 ? __warn_printk+0xcc/0x140 ? __warn_printk+0xd5/0x140 ? refcount_warn_saturate+0xdf/0x1d0 get_net_ns+0xa4/0xc0 ? __pfx_get_net_ns+0x10/0x10 open_related_ns+0x5a/0x130 __tun_chr_ioctl+0x1616/0x2370 ? __sanitizer_cov_trace_switch+0x58/0xa0 ? __sanitizer_cov_trace_const_cmp2+0x1c/0x30 ? __pfx_tun_chr_ioctl+0x10/0x10 tun_chr_ioctl+0x2f/0x40 __x64_sys_ioctl+0x11b/0x160 x64_sys_call+0x1211/0x20d0 do_syscall_64+0x9e/0x1d0 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f5b28f165d7 Code: b3 66 90 48 8b 05 b1 48 2d 00 64 c7 00 26 00 00 00 48 c7 c0 ff ff ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 b8 10 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 81 48 2d 00 8 RSP: 002b:00007ffc2b59c5e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f5b28f165d7 RDX: 0000000000000000 RSI: 00000000000054e3 RDI: 0000000000000003 RBP: 00007ffc2b59c650 R08: 00007f5b291ed8c0 R09: 00007f5b2961a4c0 R10: 0000000029690010 R11: 0000000000000246 R12: 0000000000400730 R13: 00007ffc2b59cf40 R14: 0000000000000000 R15: 0000000000000000 </TASK> Kernel panic - not syncing: kernel: panic_on_warn set ... This is trigger as below: ns0 ns1 tun_set_iff() //dev is tun0 tun->dev = dev //ip link set tun0 netns ns1 put_net() //ref is 0 __tun_chr_ioctl() //TUNGETDEVNETNS net = dev_net(tun->dev); open_related_ns(&net->ns, get_net_ns); //ns1 get_net_ns() get_net() //addition on 0 Use maybe_get_net() in get_net_ns in case net's ref is zero to fix this
Severity
7.8 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-09-10 17:03 UTC
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 0c3e0e3bb623c3735b8c9ab8aa8332f944f83a9f , < 3a6cd326ead7c8bb1f64486789a01974a9f1ad55 (git)
Affected: 0c3e0e3bb623c3735b8c9ab8aa8332f944f83a9f , < 2b82028a1f5ee3a8e04090776b10c534144ae77b (git)
Affected: 0c3e0e3bb623c3735b8c9ab8aa8332f944f83a9f , < cb7f811f638a14590ff98f53c6dd1fb54627d940 (git)
Affected: 0c3e0e3bb623c3735b8c9ab8aa8332f944f83a9f , < 1b631bffcb2c09551888f3c723f4365c91fe05ef (git)
Affected: 0c3e0e3bb623c3735b8c9ab8aa8332f944f83a9f , < ef0394ca25953ea0eddcc82feae1f750451f1876 (git)
Affected: 0c3e0e3bb623c3735b8c9ab8aa8332f944f83a9f , < 3af28df0d883e8c89a29ac31bc65f9023485743b (git)
Affected: 0c3e0e3bb623c3735b8c9ab8aa8332f944f83a9f , < ff960f9d3edbe08a736b5a224d91a305ccc946b0 (git)
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Linux Linux Affected: 5.2
Unaffected: 0 , < 5.2 (semver)
Unaffected: 5.4.279 , ≤ 5.4.* (semver)
Unaffected: 5.10.221 , ≤ 5.10.* (semver)
Unaffected: 5.15.162 , ≤ 5.15.* (semver)
Unaffected: 6.1.96 , ≤ 6.1.* (semver)
Unaffected: 6.6.36 , ≤ 6.6.* (semver)
Unaffected: 6.9.7 , ≤ 6.9.* (semver)
Unaffected: 6.10 , ≤ * (original_commit_for_fix)
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Siemens RUGGEDCOM RST2428P Affected: 0 , < V3.1 (custom)
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Siemens RUGGEDCOM RST2428P Unaffected: 0 , < * (custom)
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Siemens SCALANCE XC-300/XR-300/XC-400/XR-500WG/XR-500 family Unaffected: 0 , < * (custom)
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Siemens SCALANCE XCM-/XRM-/XCH-/XRH-300 family Affected: 0 , < V3.1 (custom)
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Siemens SCALANCE XCM-/XRM-/XCH-/XRH-300 family Unaffected: 0 , < * (custom)
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Siemens SIMATIC S7-1500 TM MFP - GNU/Linux subsystem Affected: 0 , < * (custom)
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnetns: Make get_net_ns() handle zero refcount net\n\nSyzkaller hit a warning:\nrefcount_t: addition on 0; use-after-free.\nWARNING: CPU: 3 PID: 7890 at lib/refcount.c:25 refcount_warn_saturate+0xdf/0x1d0\nModules linked in:\nCPU: 3 PID: 7890 Comm: tun Not tainted 6.10.0-rc3-00100-gcaa4f9578aba-dirty #310\nHardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.15.0-1 04/01/2014\nRIP: 0010:refcount_warn_saturate+0xdf/0x1d0\nCode: 41 49 04 31 ff 89 de e8 9f 1e cd fe 84 db 75 9c e8 76 26 cd fe c6 05 b6 41 49 04 01 90 48 c7 c7 b8 8e 25 86 e8 d2 05 b5 fe 90 \u003c0f\u003e 0b 90 90 e9 79 ff ff ff e8 53 26 cd fe 0f b6 1\nRSP: 0018:ffff8881067b7da0 EFLAGS: 00010286\nRAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffff811c72ac\nRDX: ffff8881026a2140 RSI: ffffffff811c72b5 RDI: 0000000000000001\nRBP: ffff8881067b7db0 R08: 0000000000000000 R09: 205b5d3730353139\nR10: 0000000000000000 R11: 205d303938375420 R12: ffff8881086500c4\nR13: ffff8881086500c4 R14: ffff8881086500b0 R15: ffff888108650040\nFS:  00007f5b2961a4c0(0000) GS:ffff88823bd00000(0000) knlGS:0000000000000000\nCS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033\nCR2: 000055d7ed36fd18 CR3: 00000001482f6000 CR4: 00000000000006f0\nDR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000\nDR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400\nCall Trace:\n \u003cTASK\u003e\n ? show_regs+0xa3/0xc0\n ? __warn+0xa5/0x1c0\n ? refcount_warn_saturate+0xdf/0x1d0\n ? report_bug+0x1fc/0x2d0\n ? refcount_warn_saturate+0xdf/0x1d0\n ? handle_bug+0xa1/0x110\n ? exc_invalid_op+0x3c/0xb0\n ? asm_exc_invalid_op+0x1f/0x30\n ? __warn_printk+0xcc/0x140\n ? __warn_printk+0xd5/0x140\n ? refcount_warn_saturate+0xdf/0x1d0\n get_net_ns+0xa4/0xc0\n ? __pfx_get_net_ns+0x10/0x10\n open_related_ns+0x5a/0x130\n __tun_chr_ioctl+0x1616/0x2370\n ? __sanitizer_cov_trace_switch+0x58/0xa0\n ? __sanitizer_cov_trace_const_cmp2+0x1c/0x30\n ? __pfx_tun_chr_ioctl+0x10/0x10\n tun_chr_ioctl+0x2f/0x40\n __x64_sys_ioctl+0x11b/0x160\n x64_sys_call+0x1211/0x20d0\n do_syscall_64+0x9e/0x1d0\n entry_SYSCALL_64_after_hwframe+0x77/0x7f\nRIP: 0033:0x7f5b28f165d7\nCode: b3 66 90 48 8b 05 b1 48 2d 00 64 c7 00 26 00 00 00 48 c7 c0 ff ff ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 b8 10 00 00 00 0f 05 \u003c48\u003e 3d 01 f0 ff ff 73 01 c3 48 8b 0d 81 48 2d 00 8\nRSP: 002b:00007ffc2b59c5e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010\nRAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f5b28f165d7\nRDX: 0000000000000000 RSI: 00000000000054e3 RDI: 0000000000000003\nRBP: 00007ffc2b59c650 R08: 00007f5b291ed8c0 R09: 00007f5b2961a4c0\nR10: 0000000029690010 R11: 0000000000000246 R12: 0000000000400730\nR13: 00007ffc2b59cf40 R14: 0000000000000000 R15: 0000000000000000\n \u003c/TASK\u003e\nKernel panic - not syncing: kernel: panic_on_warn set ...\n\nThis is trigger as below:\n          ns0                                    ns1\ntun_set_iff() //dev is tun0\n   tun-\u003edev = dev\n//ip link set tun0 netns ns1\n                                       put_net() //ref is 0\n__tun_chr_ioctl() //TUNGETDEVNETNS\n   net = dev_net(tun-\u003edev);\n   open_related_ns(\u0026net-\u003ens, get_net_ns); //ns1\n     get_net_ns()\n        get_net() //addition on 0\n\nUse maybe_get_net() in get_net_ns in case net\u0027s ref is zero to fix this"
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          "scenarios": [
            {
              "lang": "en",
              "value": "AV:L - The vulnerability is reached through the TUNGETDEVNETNS ioctl on a local /dev/net/tun file descriptor, requiring local system access via the syscall interface. No network or physical vector exists.\nAC:L - The attacker controls both sides of the race \u2014 they create and destroy the target netns themselves and then issue the ioctl, with the zero-refcount window spanning the entire cleanup_net() teardown (synchronize_rcu_expedited plus rcu_barrier), and the attempt is freely repeatable.\nPR:L - An unprivileged user needs only to open /dev/net/tun (mode 0666 on mainstream distros) and hold CAP_NET_ADMIN over namespaces they created, which unshare -Urn grants to any ordinary user; no real root in the initial namespace is required.\nUI:N - The entire sequence \u2014 create tun device, move it to a second netns, destroy that netns, issue the ioctl \u2014 is performed by the attacker\u0027s own process with no victim action.\nS:U - The vulnerable code and the impacted resources are both kernel memory under the same security authority; this is conventional local kernel privilege escalation with no VM, IOMMU, or hypervisor boundary crossed.\nC:H - The installed nsfs fd retains a dangling struct net pointer after cleanup_net() frees it via net_free(), and setns() then reads net-\u003euser_ns and installs the freed namespace, so all subsequent network syscalls read attacker-groomed freed slab memory, yielding an arbitrary kernel read primitive.\nI:H - put_net() on the freed object performs refcount writes into reclaimed slab memory and can push a freed/live netns onto the global cleanup_list, enabling premature destruction of an in-use namespace and heap corruption exploitable for control-flow hijacking.\nA:H - The immediate effect is a refcount_warn_saturate WARNING that panics the kernel on panic_on_warn systems, and the resulting use-after-free on struct net reliably causes oopses and kernel-wide network state corruption."
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-05T11:34:17.397Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/3a6cd326ead7c8bb1f64486789a01974a9f1ad55"
        },
        {
          "url": "https://git.kernel.org/stable/c/2b82028a1f5ee3a8e04090776b10c534144ae77b"
        },
        {
          "url": "https://git.kernel.org/stable/c/cb7f811f638a14590ff98f53c6dd1fb54627d940"
        },
        {
          "url": "https://git.kernel.org/stable/c/1b631bffcb2c09551888f3c723f4365c91fe05ef"
        },
        {
          "url": "https://git.kernel.org/stable/c/ef0394ca25953ea0eddcc82feae1f750451f1876"
        },
        {
          "url": "https://git.kernel.org/stable/c/3af28df0d883e8c89a29ac31bc65f9023485743b"
        },
        {
          "url": "https://git.kernel.org/stable/c/ff960f9d3edbe08a736b5a224d91a305ccc946b0"
        }
      ],
      "title": "netns: Make get_net_ns() handle zero refcount net",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2024-40958",
    "datePublished": "2024-07-12T12:32:00.431Z",
    "dateReserved": "2024-07-12T12:17:45.593Z",
    "dateUpdated": "2026-08-05T11:34:17.397Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2024-40958",
      "date": "2026-09-16",
      "epss": "0.00269",
      "percentile": "0.19196"
    },
    "fkie_nvd": {
      "configurations": "[{\"nodes\": [{\"operator\": \"OR\", \"negate\": false, \"cpeMatch\": [{\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"versionStartIncluding\": \"5.2\", \"versionEndExcluding\": \"5.4.279\", \"matchCriteriaId\": \"5A16AF13-82B4-4031-88E2-F3A1AE0863D5\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"versionStartIncluding\": \"5.5\", \"versionEndExcluding\": \"5.10.221\", \"matchCriteriaId\": \"659E1520-6345-41AF-B893-A7C0647585A0\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"versionStartIncluding\": \"5.11\", \"versionEndExcluding\": \"5.15.162\", \"matchCriteriaId\": \"10A39ACC-3005-40E8-875C-98A372D1FFD5\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"versionStartIncluding\": \"5.16\", \"versionEndExcluding\": \"6.1.96\", \"matchCriteriaId\": \"61E887B4-732A-40D2-9983-CC6F281EBFB7\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"versionStartIncluding\": \"6.2\", \"versionEndExcluding\": \"6.6.36\", \"matchCriteriaId\": \"E1046C95-860A-45B0-B718-2B29F65BFF10\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"versionStartIncluding\": \"6.7\", \"versionEndExcluding\": \"6.9.7\", \"matchCriteriaId\": \"0A047AF2-94AC-4A3A-B32D-6AB930D8EF1C\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:linux:linux_kernel:6.10:rc1:*:*:*:*:*:*\", \"matchCriteriaId\": \"2EBB4392-5FA6-4DA9-9772-8F9C750109FA\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:linux:linux_kernel:6.10:rc2:*:*:*:*:*:*\", \"matchCriteriaId\": \"331C2F14-12C7-45D5-893D-8C52EE38EA10\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:linux:linux_kernel:6.10:rc3:*:*:*:*:*:*\", \"matchCriteriaId\": \"3173713D-909A-4DD3-9DD4-1E171EB057EE\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:linux:linux_kernel:6.10:rc4:*:*:*:*:*:*\", \"matchCriteriaId\": \"79F18AFA-40F7-43F0-BA30-7BDB65F918B9\"}]}]}]",
      "descriptions": "[{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\nnetns: Make get_net_ns() handle zero refcount net\\n\\nSyzkaller hit a warning:\\nrefcount_t: addition on 0; use-after-free.\\nWARNING: CPU: 3 PID: 7890 at lib/refcount.c:25 refcount_warn_saturate+0xdf/0x1d0\\nModules linked in:\\nCPU: 3 PID: 7890 Comm: tun Not tainted 6.10.0-rc3-00100-gcaa4f9578aba-dirty #310\\nHardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.15.0-1 04/01/2014\\nRIP: 0010:refcount_warn_saturate+0xdf/0x1d0\\nCode: 41 49 04 31 ff 89 de e8 9f 1e cd fe 84 db 75 9c e8 76 26 cd fe c6 05 b6 41 49 04 01 90 48 c7 c7 b8 8e 25 86 e8 d2 05 b5 fe 90 \u003c0f\u003e 0b 90 90 e9 79 ff ff ff e8 53 26 cd fe 0f b6 1\\nRSP: 0018:ffff8881067b7da0 EFLAGS: 00010286\\nRAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffff811c72ac\\nRDX: ffff8881026a2140 RSI: ffffffff811c72b5 RDI: 0000000000000001\\nRBP: ffff8881067b7db0 R08: 0000000000000000 R09: 205b5d3730353139\\nR10: 0000000000000000 R11: 205d303938375420 R12: ffff8881086500c4\\nR13: ffff8881086500c4 R14: ffff8881086500b0 R15: ffff888108650040\\nFS:  00007f5b2961a4c0(0000) GS:ffff88823bd00000(0000) knlGS:0000000000000000\\nCS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033\\nCR2: 000055d7ed36fd18 CR3: 00000001482f6000 CR4: 00000000000006f0\\nDR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000\\nDR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400\\nCall Trace:\\n \u003cTASK\u003e\\n ? show_regs+0xa3/0xc0\\n ? __warn+0xa5/0x1c0\\n ? refcount_warn_saturate+0xdf/0x1d0\\n ? report_bug+0x1fc/0x2d0\\n ? refcount_warn_saturate+0xdf/0x1d0\\n ? handle_bug+0xa1/0x110\\n ? exc_invalid_op+0x3c/0xb0\\n ? asm_exc_invalid_op+0x1f/0x30\\n ? __warn_printk+0xcc/0x140\\n ? __warn_printk+0xd5/0x140\\n ? refcount_warn_saturate+0xdf/0x1d0\\n get_net_ns+0xa4/0xc0\\n ? __pfx_get_net_ns+0x10/0x10\\n open_related_ns+0x5a/0x130\\n __tun_chr_ioctl+0x1616/0x2370\\n ? __sanitizer_cov_trace_switch+0x58/0xa0\\n ? __sanitizer_cov_trace_const_cmp2+0x1c/0x30\\n ? __pfx_tun_chr_ioctl+0x10/0x10\\n tun_chr_ioctl+0x2f/0x40\\n __x64_sys_ioctl+0x11b/0x160\\n x64_sys_call+0x1211/0x20d0\\n do_syscall_64+0x9e/0x1d0\\n entry_SYSCALL_64_after_hwframe+0x77/0x7f\\nRIP: 0033:0x7f5b28f165d7\\nCode: b3 66 90 48 8b 05 b1 48 2d 00 64 c7 00 26 00 00 00 48 c7 c0 ff ff ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 b8 10 00 00 00 0f 05 \u003c48\u003e 3d 01 f0 ff ff 73 01 c3 48 8b 0d 81 48 2d 00 8\\nRSP: 002b:00007ffc2b59c5e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010\\nRAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f5b28f165d7\\nRDX: 0000000000000000 RSI: 00000000000054e3 RDI: 0000000000000003\\nRBP: 00007ffc2b59c650 R08: 00007f5b291ed8c0 R09: 00007f5b2961a4c0\\nR10: 0000000029690010 R11: 0000000000000246 R12: 0000000000400730\\nR13: 00007ffc2b59cf40 R14: 0000000000000000 R15: 0000000000000000\\n \u003c/TASK\u003e\\nKernel panic - not syncing: kernel: panic_on_warn set ...\\n\\nThis is trigger as below:\\n          ns0                                    ns1\\ntun_set_iff() //dev is tun0\\n   tun-\u003edev = dev\\n//ip link set tun0 netns ns1\\n                                       put_net() //ref is 0\\n__tun_chr_ioctl() //TUNGETDEVNETNS\\n   net = dev_net(tun-\u003edev);\\n   open_related_ns(\u0026net-\u003ens, get_net_ns); //ns1\\n     get_net_ns()\\n        get_net() //addition on 0\\n\\nUse maybe_get_net() in get_net_ns in case net\u0027s ref is zero to fix this\"}, {\"lang\": \"es\", \"value\": \"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: netns: haga que get_net_ns() maneje cero refcount net. Syzkaller recibi\\u00f3 una advertencia: refcount_t: adici\\u00f3n en 0; use-after-free. ADVERTENCIA: CPU: 3 PID: 7890 en lib/refcount.c:25 refcount_warn_saturate+0xdf/0x1d0 M\\u00f3dulos vinculados en: CPU: 3 PID: 7890 Comm: tun No contaminado 6.10.0-rc3-00100-gcaa4f9578aba-dirty #310 Hardware nombre: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.15.0-1 01/04/2014 RIP: 0010:refcount_warn_saturate+0xdf/0x1d0 C\\u00f3digo: 41 49 04 31 ff 89 de e8 9f 1e cd fe 84 db 75 9c e8 76 26 cd fe c6 05 b6 41 49 04 01 90 48 c7 c7 b8 8e 25 86 e8 d2 05 b5 fe 90 \u0026lt;0f\u0026gt; 0b 90 90 e9 79 ff ff ff e8 53 26 cd fe 0f b6 1 RSP: 0018: ffff8881067b7da0 EFLAGS: 00010286 RAX: 00000000000000000 RBX: 0000000000000000 RCX: ffffffff811c72ac RDX: ffff8881026a2140 RSI: ffffffff811c72b5 RDI: 0000000000000001 RBP: ffff8881067b7db0 R08: 0000000000000000 R09: 205b5d3730353139 R10: 00000000000000000 R11: 205d303938375420 R12: 8881086500c4 R13: ffff8881086500c4 R14: ffff8881086500b0 R15: ffff888108650040 FS : 00007f5b2961a4c0(0000) GS:ffff88823bd00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: fd18 CR3: 00000001482f6000 CR4: 00000000000006f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Seguimiento de llamadas: ? show_regs+0xa3/0xc0? __advertir+0xa5/0x1c0 ? refcount_warn_saturate+0xdf/0x1d0? report_bug+0x1fc/0x2d0? refcount_warn_saturate+0xdf/0x1d0? handle_bug+0xa1/0x110? exc_invalid_op+0x3c/0xb0? asm_exc_invalid_op+0x1f/0x30? __warn_printk+0xcc/0x140 ? __warn_printk+0xd5/0x140 ? refcount_warn_saturate+0xdf/0x1d0 get_net_ns+0xa4/0xc0 ? __pfx_get_net_ns+0x10/0x10 open_ related_ns+0x5a/0x130 __tun_chr_ioctl+0x1616/0x2370 ? __sanitizer_cov_trace_switch+0x58/0xa0? __sanitizer_cov_trace_const_cmp2+0x1c/0x30 ? __pfx_tun_chr_ioctl+0x10/0x10 tun_chr_ioctl+0x2f/0x40 __x64_sys_ioctl+0x11b/0x160 x64_sys_call+0x1211/0x20d0 do_syscall_64+0x9e/0x1d0 Entry_SYSCALL_64_after_h wframe+0x77/0x7f RIP: 0033:0x7f5b28f165d7 C\\u00f3digo: b3 66 90 48 8b 05 b1 48 2d 00 64 c7 00 26 00 00 00 48 c7 c0 ff ff ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 b8 10 00 00 00 0f 05 \u0026lt;48\u0026gt; 3d 01 f0 ff 73 01 c3 48 8b 0d 81 48 2d 0 8 RSP: 002b:00007ffc2b59c5e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f5b28f165d7 RDX: 000000000 RSI: 00000000000054e3 RDI: 0000000000000003 RBP: 00007ffc2b59c650 R08: 00007f5b291ed8c0 R09: 00007f5b2961a4c0 R10: 690010 R11: 0000000000000246 R12: 0000000000400730 R13: 00007ffc2b59cf40 R14: 0000000000000000 R15: 00000000000000000  P\\u00e1nico del kernel - no sincronizado: kernel: p\\u00e1nico_on_warn set ... Esto se activa como se muestra a continuaci\\u00f3n: ns0 ns1 tun_set_iff() //dev is tun0 tun-\u0026gt;dev = dev //ip link set tun0 netns ns1 put_net() //ref es 0 __tun_chr_ioctl() //TUNGETDEVNETNS net = dev_net(tun-\u0026gt;dev); open_ related_ns(\u0026amp;net-\u0026gt;ns, get_net_ns); //ns1 get_net_ns() get_net() //adici\\u00f3n en 0 Use may_get_net() en get_net_ns en caso de que la referencia de red sea cero para solucionar este problema\"}]",
      "id": "CVE-2024-40958",
      "lastModified": "2024-11-21T09:31:56.947",
      "metrics": "{\"cvssMetricV31\": [{\"source\": \"nvd@nist.gov\", \"type\": \"Primary\", \"cvssData\": {\"version\": \"3.1\", \"vectorString\": \"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H\", \"baseScore\": 7.8, \"baseSeverity\": \"HIGH\", \"attackVector\": \"LOCAL\", \"attackComplexity\": \"LOW\", \"privilegesRequired\": \"LOW\", \"userInteraction\": \"NONE\", \"scope\": \"UNCHANGED\", \"confidentialityImpact\": \"HIGH\", \"integrityImpact\": \"HIGH\", \"availabilityImpact\": \"HIGH\"}, \"exploitabilityScore\": 1.8, \"impactScore\": 5.9}]}",
      "published": "2024-07-12T13:15:17.883",
      "references": "[{\"url\": \"https://git.kernel.org/stable/c/1b631bffcb2c09551888f3c723f4365c91fe05ef\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/2b82028a1f5ee3a8e04090776b10c534144ae77b\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/3a6cd326ead7c8bb1f64486789a01974a9f1ad55\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/3af28df0d883e8c89a29ac31bc65f9023485743b\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/cb7f811f638a14590ff98f53c6dd1fb54627d940\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/ef0394ca25953ea0eddcc82feae1f750451f1876\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/ff960f9d3edbe08a736b5a224d91a305ccc946b0\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/1b631bffcb2c09551888f3c723f4365c91fe05ef\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/2b82028a1f5ee3a8e04090776b10c534144ae77b\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/3a6cd326ead7c8bb1f64486789a01974a9f1ad55\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/3af28df0d883e8c89a29ac31bc65f9023485743b\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/cb7f811f638a14590ff98f53c6dd1fb54627d940\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/ef0394ca25953ea0eddcc82feae1f750451f1876\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/ff960f9d3edbe08a736b5a224d91a305ccc946b0\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Patch\"]}]",
      "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "vulnStatus": "Modified",
      "weaknesses": "[{\"source\": \"nvd@nist.gov\", \"type\": \"Primary\", \"description\": [{\"lang\": \"en\", \"value\": \"CWE-416\"}]}]"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2024-40958\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2024-07-12T13:15:17.883\",\"lastModified\":\"2026-08-04T11:19:10.247\",\"vulnStatus\":\"Modified\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nnetns: Make get_net_ns() handle zero refcount net\\n\\nSyzkaller hit a warning:\\nrefcount_t: addition on 0; use-after-free.\\nWARNING: CPU: 3 PID: 7890 at lib/refcount.c:25 refcount_warn_saturate+0xdf/0x1d0\\nModules linked in:\\nCPU: 3 PID: 7890 Comm: tun Not tainted 6.10.0-rc3-00100-gcaa4f9578aba-dirty #310\\nHardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.15.0-1 04/01/2014\\nRIP: 0010:refcount_warn_saturate+0xdf/0x1d0\\nCode: 41 49 04 31 ff 89 de e8 9f 1e cd fe 84 db 75 9c e8 76 26 cd fe c6 05 b6 41 49 04 01 90 48 c7 c7 b8 8e 25 86 e8 d2 05 b5 fe 90 \u003c0f\u003e 0b 90 90 e9 79 ff ff ff e8 53 26 cd fe 0f b6 1\\nRSP: 0018:ffff8881067b7da0 EFLAGS: 00010286\\nRAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffff811c72ac\\nRDX: ffff8881026a2140 RSI: ffffffff811c72b5 RDI: 0000000000000001\\nRBP: ffff8881067b7db0 R08: 0000000000000000 R09: 205b5d3730353139\\nR10: 0000000000000000 R11: 205d303938375420 R12: ffff8881086500c4\\nR13: ffff8881086500c4 R14: ffff8881086500b0 R15: ffff888108650040\\nFS:  00007f5b2961a4c0(0000) GS:ffff88823bd00000(0000) knlGS:0000000000000000\\nCS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033\\nCR2: 000055d7ed36fd18 CR3: 00000001482f6000 CR4: 00000000000006f0\\nDR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000\\nDR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400\\nCall Trace:\\n \u003cTASK\u003e\\n ? show_regs+0xa3/0xc0\\n ? __warn+0xa5/0x1c0\\n ? refcount_warn_saturate+0xdf/0x1d0\\n ? report_bug+0x1fc/0x2d0\\n ? refcount_warn_saturate+0xdf/0x1d0\\n ? handle_bug+0xa1/0x110\\n ? exc_invalid_op+0x3c/0xb0\\n ? asm_exc_invalid_op+0x1f/0x30\\n ? __warn_printk+0xcc/0x140\\n ? __warn_printk+0xd5/0x140\\n ? refcount_warn_saturate+0xdf/0x1d0\\n get_net_ns+0xa4/0xc0\\n ? __pfx_get_net_ns+0x10/0x10\\n open_related_ns+0x5a/0x130\\n __tun_chr_ioctl+0x1616/0x2370\\n ? __sanitizer_cov_trace_switch+0x58/0xa0\\n ? __sanitizer_cov_trace_const_cmp2+0x1c/0x30\\n ? __pfx_tun_chr_ioctl+0x10/0x10\\n tun_chr_ioctl+0x2f/0x40\\n __x64_sys_ioctl+0x11b/0x160\\n x64_sys_call+0x1211/0x20d0\\n do_syscall_64+0x9e/0x1d0\\n entry_SYSCALL_64_after_hwframe+0x77/0x7f\\nRIP: 0033:0x7f5b28f165d7\\nCode: b3 66 90 48 8b 05 b1 48 2d 00 64 c7 00 26 00 00 00 48 c7 c0 ff ff ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 b8 10 00 00 00 0f 05 \u003c48\u003e 3d 01 f0 ff ff 73 01 c3 48 8b 0d 81 48 2d 00 8\\nRSP: 002b:00007ffc2b59c5e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010\\nRAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f5b28f165d7\\nRDX: 0000000000000000 RSI: 00000000000054e3 RDI: 0000000000000003\\nRBP: 00007ffc2b59c650 R08: 00007f5b291ed8c0 R09: 00007f5b2961a4c0\\nR10: 0000000029690010 R11: 0000000000000246 R12: 0000000000400730\\nR13: 00007ffc2b59cf40 R14: 0000000000000000 R15: 0000000000000000\\n \u003c/TASK\u003e\\nKernel panic - not syncing: kernel: panic_on_warn set ...\\n\\nThis is trigger as below:\\n          ns0                                    ns1\\ntun_set_iff() //dev is tun0\\n   tun-\u003edev = dev\\n//ip link set tun0 netns ns1\\n                                       put_net() //ref is 0\\n__tun_chr_ioctl() //TUNGETDEVNETNS\\n   net = dev_net(tun-\u003edev);\\n   open_related_ns(\u0026net-\u003ens, get_net_ns); //ns1\\n     get_net_ns()\\n        get_net() //addition on 0\\n\\nUse maybe_get_net() in get_net_ns in case net\u0027s ref is zero to fix this\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: netns: haga que get_net_ns() maneje cero refcount net. Syzkaller recibi\u00f3 una advertencia: refcount_t: adici\u00f3n en 0; use-after-free. ADVERTENCIA: CPU: 3 PID: 7890 en lib/refcount.c:25 refcount_warn_saturate+0xdf/0x1d0 M\u00f3dulos vinculados en: CPU: 3 PID: 7890 Comm: tun No contaminado 6.10.0-rc3-00100-gcaa4f9578aba-dirty #310 Hardware nombre: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.15.0-1 01/04/2014 RIP: 0010:refcount_warn_saturate+0xdf/0x1d0 C\u00f3digo: 41 49 04 31 ff 89 de e8 9f 1e cd fe 84 db 75 9c e8 76 26 cd fe c6 05 b6 41 49 04 01 90 48 c7 c7 b8 8e 25 86 e8 d2 05 b5 fe 90 \u0026lt;0f\u0026gt; 0b 90 90 e9 79 ff ff ff e8 53 26 cd fe 0f b6 1 RSP: 0018: ffff8881067b7da0 EFLAGS: 00010286 RAX: 00000000000000000 RBX: 0000000000000000 RCX: ffffffff811c72ac RDX: ffff8881026a2140 RSI: ffffffff811c72b5 RDI: 0000000000000001 RBP: ffff8881067b7db0 R08: 0000000000000000 R09: 205b5d3730353139 R10: 00000000000000000 R11: 205d303938375420 R12: 8881086500c4 R13: ffff8881086500c4 R14: ffff8881086500b0 R15: ffff888108650040 FS : 00007f5b2961a4c0(0000) GS:ffff88823bd00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: fd18 CR3: 00000001482f6000 CR4: 00000000000006f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Seguimiento de llamadas: ? show_regs+0xa3/0xc0? __advertir+0xa5/0x1c0 ? refcount_warn_saturate+0xdf/0x1d0? report_bug+0x1fc/0x2d0? refcount_warn_saturate+0xdf/0x1d0? handle_bug+0xa1/0x110? exc_invalid_op+0x3c/0xb0? asm_exc_invalid_op+0x1f/0x30? __warn_printk+0xcc/0x140 ? __warn_printk+0xd5/0x140 ? refcount_warn_saturate+0xdf/0x1d0 get_net_ns+0xa4/0xc0 ? __pfx_get_net_ns+0x10/0x10 open_ related_ns+0x5a/0x130 __tun_chr_ioctl+0x1616/0x2370 ? __sanitizer_cov_trace_switch+0x58/0xa0? __sanitizer_cov_trace_const_cmp2+0x1c/0x30 ? __pfx_tun_chr_ioctl+0x10/0x10 tun_chr_ioctl+0x2f/0x40 __x64_sys_ioctl+0x11b/0x160 x64_sys_call+0x1211/0x20d0 do_syscall_64+0x9e/0x1d0 Entry_SYSCALL_64_after_h wframe+0x77/0x7f RIP: 0033:0x7f5b28f165d7 C\u00f3digo: b3 66 90 48 8b 05 b1 48 2d 00 64 c7 00 26 00 00 00 48 c7 c0 ff ff ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 b8 10 00 00 00 0f 05 \u0026lt;48\u0026gt; 3d 01 f0 ff 73 01 c3 48 8b 0d 81 48 2d 0 8 RSP: 002b:00007ffc2b59c5e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f5b28f165d7 RDX: 000000000 RSI: 00000000000054e3 RDI: 0000000000000003 RBP: 00007ffc2b59c650 R08: 00007f5b291ed8c0 R09: 00007f5b2961a4c0 R10: 690010 R11: 0000000000000246 R12: 0000000000400730 R13: 00007ffc2b59cf40 R14: 0000000000000000 R15: 00000000000000000  P\u00e1nico del kernel - no sincronizado: kernel: p\u00e1nico_on_warn set ... Esto se activa como se muestra a continuaci\u00f3n: ns0 ns1 tun_set_iff() //dev is tun0 tun-\u0026gt;dev = dev //ip link set tun0 netns ns1 put_net() //ref es 0 __tun_chr_ioctl() //TUNGETDEVNETNS net = dev_net(tun-\u0026gt;dev); open_ related_ns(\u0026amp;net-\u0026gt;ns, get_net_ns); //ns1 get_net_ns() get_net() //adici\u00f3n en 0 Use may_get_net() en get_net_ns en caso de que la referencia de red sea cero para solucionar este problema\"}],\"affected\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"affectedData\":[{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"unaffected\",\"programFiles\":[\"net/core/net_namespace.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"0c3e0e3bb623c3735b8c9ab8aa8332f944f83a9f\",\"lessThan\":\"3a6cd326ead7c8bb1f64486789a01974a9f1ad55\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"0c3e0e3bb623c3735b8c9ab8aa8332f944f83a9f\",\"lessThan\":\"2b82028a1f5ee3a8e04090776b10c534144ae77b\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"0c3e0e3bb623c3735b8c9ab8aa8332f944f83a9f\",\"lessThan\":\"cb7f811f638a14590ff98f53c6dd1fb54627d940\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"0c3e0e3bb623c3735b8c9ab8aa8332f944f83a9f\",\"lessThan\":\"1b631bffcb2c09551888f3c723f4365c91fe05ef\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"0c3e0e3bb623c3735b8c9ab8aa8332f944f83a9f\",\"lessThan\":\"ef0394ca25953ea0eddcc82feae1f750451f1876\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"0c3e0e3bb623c3735b8c9ab8aa8332f944f83a9f\",\"lessThan\":\"3af28df0d883e8c89a29ac31bc65f9023485743b\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"0c3e0e3bb623c3735b8c9ab8aa8332f944f83a9f\",\"lessThan\":\"ff960f9d3edbe08a736b5a224d91a305ccc946b0\",\"versionType\":\"git\",\"status\":\"affected\"}]},{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"affected\",\"programFiles\":[\"net/core/net_namespace.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"5.2\",\"status\":\"affected\"},{\"version\":\"0\",\"lessThan\":\"5.2\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.4.279\",\"lessThanOrEqual\":\"5.4.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.10.221\",\"lessThanOrEqual\":\"5.10.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.15.162\",\"lessThanOrEqual\":\"5.15.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.1.96\",\"lessThanOrEqual\":\"6.1.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.6.36\",\"lessThanOrEqual\":\"6.6.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.9.7\",\"lessThanOrEqual\":\"6.9.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.10\",\"lessThanOrEqual\":\"*\",\"versionType\":\"original_commit_for_fix\",\"status\":\"unaffected\"}]}]},{\"source\":\"0b142b55-0307-4c5a-b3c9-f314f3fb7c5e\",\"affectedData\":[{\"vendor\":\"Siemens\",\"product\":\"RUGGEDCOM RST2428P\",\"defaultStatus\":\"unknown\",\"versions\":[{\"version\":\"0\",\"lessThan\":\"V3.1\",\"versionType\":\"custom\",\"status\":\"affected\"}]},{\"vendor\":\"Siemens\",\"product\":\"RUGGEDCOM RST2428P\",\"defaultStatus\":\"unknown\",\"versions\":[{\"version\":\"0\",\"lessThan\":\"*\",\"versionType\":\"custom\",\"status\":\"unaffected\"}]},{\"vendor\":\"Siemens\",\"product\":\"SCALANCE XC-300/XR-300/XC-400/XR-500WG/XR-500 family\",\"defaultStatus\":\"unknown\",\"versions\":[{\"version\":\"0\",\"lessThan\":\"*\",\"versionType\":\"custom\",\"status\":\"unaffected\"}]},{\"vendor\":\"Siemens\",\"product\":\"SCALANCE XC-300/XR-300/XC-400/XR-500WG/XR-500 family\",\"defaultStatus\":\"unknown\",\"versions\":[{\"version\":\"0\",\"lessThan\":\"*\",\"versionType\":\"custom\",\"status\":\"unaffected\"}]},{\"vendor\":\"Siemens\",\"product\":\"SCALANCE XCM-/XRM-/XCH-/XRH-300 family\",\"defaultStatus\":\"unknown\",\"versions\":[{\"version\":\"0\",\"lessThan\":\"V3.1\",\"versionType\":\"custom\",\"status\":\"affected\"}]},{\"vendor\":\"Siemens\",\"product\":\"SCALANCE XCM-/XRM-/XCH-/XRH-300 family\",\"defaultStatus\":\"unknown\",\"versions\":[{\"version\":\"0\",\"lessThan\":\"*\",\"versionType\":\"custom\",\"status\":\"unaffected\"}]},{\"vendor\":\"Siemens\",\"product\":\"SIMATIC S7-1500 TM MFP - GNU/Linux subsystem\",\"defaultStatus\":\"unknown\",\"versions\":[{\"version\":\"0\",\"lessThan\":\"*\",\"versionType\":\"custom\",\"status\":\"affected\"}]}]}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H\",\"baseScore\":7.8,\"baseSeverity\":\"HIGH\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.8,\"impactScore\":5.9},{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H\",\"baseScore\":7.8,\"baseSeverity\":\"HIGH\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.8,\"impactScore\":5.9}],\"ssvcV203\":[{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"ssvcData\":{\"timestamp\":\"2024-09-10T17:03:35.616951Z\",\"id\":\"CVE-2024-40958\",\"options\":[{\"exploitation\":\"none\"},{\"automatable\":\"no\"},{\"technicalImpact\":\"partial\"}],\"role\":\"CISA Coordinator\",\"version\":\"2.0.3\"}}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-416\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.2\",\"versionEndExcluding\":\"5.4.279\",\"matchCriteriaId\":\"5A16AF13-82B4-4031-88E2-F3A1AE0863D5\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.5\",\"versionEndExcluding\":\"5.10.221\",\"matchCriteriaId\":\"659E1520-6345-41AF-B893-A7C0647585A0\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.11\",\"versionEndExcluding\":\"5.15.162\",\"matchCriteriaId\":\"10A39ACC-3005-40E8-875C-98A372D1FFD5\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.16\",\"versionEndExcluding\":\"6.1.96\",\"matchCriteriaId\":\"61E887B4-732A-40D2-9983-CC6F281EBFB7\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.2\",\"versionEndExcluding\":\"6.6.36\",\"matchCriteriaId\":\"E1046C95-860A-45B0-B718-2B29F65BFF10\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.7\",\"versionEndExcluding\":\"6.9.7\",\"matchCriteriaId\":\"0A047AF2-94AC-4A3A-B32D-6AB930D8EF1C\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.10:rc1:*:*:*:*:*:*\",\"matchCriteriaId\":\"2EBB4392-5FA6-4DA9-9772-8F9C750109FA\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.10:rc2:*:*:*:*:*:*\",\"matchCriteriaId\":\"331C2F14-12C7-45D5-893D-8C52EE38EA10\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.10:rc3:*:*:*:*:*:*\",\"matchCriteriaId\":\"3173713D-909A-4DD3-9DD4-1E171EB057EE\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.10:rc4:*:*:*:*:*:*\",\"matchCriteriaId\":\"79F18AFA-40F7-43F0-BA30-7BDB65F918B9\"}]}]}],\"references\":[{\"url\":\"https://git.kernel.org/stable/c/1b631bffcb2c09551888f3c723f4365c91fe05ef\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/2b82028a1f5ee3a8e04090776b10c534144ae77b\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/3a6cd326ead7c8bb1f64486789a01974a9f1ad55\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/3af28df0d883e8c89a29ac31bc65f9023485743b\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/cb7f811f638a14590ff98f53c6dd1fb54627d940\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/ef0394ca25953ea0eddcc82feae1f750451f1876\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/ff960f9d3edbe08a736b5a224d91a305ccc946b0\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/1b631bffcb2c09551888f3c723f4365c91fe05ef\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/2b82028a1f5ee3a8e04090776b10c534144ae77b\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/3a6cd326ead7c8bb1f64486789a01974a9f1ad55\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/3af28df0d883e8c89a29ac31bc65f9023485743b\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/cb7f811f638a14590ff98f53c6dd1fb54627d940\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/ef0394ca25953ea0eddcc82feae1f750451f1876\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/ff960f9d3edbe08a736b5a224d91a305ccc946b0\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\"]},{\"url\":\"https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"https://cert-portal.siemens.com/productcert/html/ssa-265688.html\",\"source\":\"0b142b55-0307-4c5a-b3c9-f314f3fb7c5e\"},{\"url\":\"https://cert-portal.siemens.com/productcert/html/ssa-355557.html\",\"source\":\"0b142b55-0307-4c5a-b3c9-f314f3fb7c5e\"},{\"url\":\"https://cert-portal.siemens.com/productcert/html/ssa-613116.html\",\"source\":\"0b142b55-0307-4c5a-b3c9-f314f3fb7c5e\"}]}}",
    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-08-04T18:38:19+00:00",
      "cve": "CVE-2024-40958",
      "id": "CVE-2024-40958",
      "initial_release_date": "2024-07-12T00:00:00+00:00",
      "product_status:fixed": "429",
      "product_status:known_affected": "64",
      "product_status:known_not_affected": "8",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: netns: Make get_net_ns() handle zero refcount net",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2024/cve-2024-40958.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-08-29T01:52:28Z",
      "cve": "CVE-2024-40958",
      "id": "CVE-2024-40958",
      "initial_release_date": "2024-07-16T02:34:17Z",
      "product_status:known_affected": "479",
      "product_status:known_not_affected": "143",
      "product_status:recommended": "702",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2024-40958",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2024-40958.json",
      "version": "93"
    },
    "vulnrichment": {
      "containers": "{\"adp\": [{\"title\": \"CVE Program Container\", \"references\": [{\"url\": \"https://git.kernel.org/stable/c/3a6cd326ead7c8bb1f64486789a01974a9f1ad55\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/stable/c/2b82028a1f5ee3a8e04090776b10c534144ae77b\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/stable/c/cb7f811f638a14590ff98f53c6dd1fb54627d940\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/stable/c/1b631bffcb2c09551888f3c723f4365c91fe05ef\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/stable/c/ef0394ca25953ea0eddcc82feae1f750451f1876\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/stable/c/3af28df0d883e8c89a29ac31bc65f9023485743b\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/stable/c/ff960f9d3edbe08a736b5a224d91a305ccc946b0\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html\"}], \"providerMetadata\": {\"orgId\": \"af854a3a-2127-422b-91ae-364da2661108\", \"shortName\": \"CVE\", \"dateUpdated\": \"2025-11-03T21:58:22.994Z\"}}, {\"affected\": [{\"vendor\": \"Siemens\", \"product\": \"RUGGEDCOM RST2428P\", \"versions\": [{\"status\": \"affected\", \"version\": \"0\", \"lessThan\": \"V3.1\", \"versionType\": \"custom\"}], \"defaultStatus\": \"unknown\"}, {\"vendor\": \"Siemens\", \"product\": \"RUGGEDCOM RST2428P\", \"versions\": [{\"status\": \"unaffected\", \"version\": \"0\", \"lessThan\": \"*\", \"versionType\": \"custom\"}], \"defaultStatus\": \"unknown\"}, {\"vendor\": \"Siemens\", \"product\": \"SCALANCE XC-300/XR-300/XC-400/XR-500WG/XR-500 family\", \"versions\": [{\"status\": \"unaffected\", \"version\": \"0\", \"lessThan\": \"*\", \"versionType\": \"custom\"}], \"defaultStatus\": \"unknown\"}, {\"vendor\": \"Siemens\", \"product\": \"SCALANCE XC-300/XR-300/XC-400/XR-500WG/XR-500 family\", \"versions\": [{\"status\": \"unaffected\", \"version\": \"0\", \"lessThan\": \"*\", \"versionType\": \"custom\"}], \"defaultStatus\": \"unknown\"}, {\"vendor\": \"Siemens\", \"product\": \"SCALANCE XCM-/XRM-/XCH-/XRH-300 family\", \"versions\": [{\"status\": \"affected\", \"version\": \"0\", \"lessThan\": \"V3.1\", \"versionType\": \"custom\"}], \"defaultStatus\": \"unknown\"}, {\"vendor\": \"Siemens\", \"product\": \"SCALANCE XCM-/XRM-/XCH-/XRH-300 family\", \"versions\": [{\"status\": \"unaffected\", \"version\": \"0\", \"lessThan\": \"*\", \"versionType\": \"custom\"}], \"defaultStatus\": \"unknown\"}, {\"vendor\": \"Siemens\", \"product\": \"SIMATIC S7-1500 TM MFP - GNU/Linux subsystem\", \"versions\": [{\"status\": \"affected\", \"version\": \"0\", \"lessThan\": \"*\", \"versionType\": \"custom\"}], \"defaultStatus\": \"unknown\"}], \"x_adpType\": \"supplier\", \"references\": [{\"url\": \"https://cert-portal.siemens.com/productcert/html/ssa-265688.html\"}, {\"url\": \"https://cert-portal.siemens.com/productcert/html/ssa-613116.html\"}, {\"url\": \"https://cert-portal.siemens.com/productcert/html/ssa-355557.html\"}], \"providerMetadata\": {\"orgId\": \"0b142b55-0307-4c5a-b3c9-f314f3fb7c5e\", \"shortName\": \"siemens-SADP\", \"dateUpdated\": \"2026-05-12T11:55:48.230Z\"}}, {\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2024-40958\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2024-09-10T17:03:35.616951Z\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2024-09-11T12:42:22.411Z\"}}], \"cna\": {\"title\": \"netns: Make get_net_ns() handle zero refcount net\", \"affected\": [{\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"0c3e0e3bb623c3735b8c9ab8aa8332f944f83a9f\", \"lessThan\": \"3a6cd326ead7c8bb1f64486789a01974a9f1ad55\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"0c3e0e3bb623c3735b8c9ab8aa8332f944f83a9f\", \"lessThan\": \"2b82028a1f5ee3a8e04090776b10c534144ae77b\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"0c3e0e3bb623c3735b8c9ab8aa8332f944f83a9f\", \"lessThan\": \"cb7f811f638a14590ff98f53c6dd1fb54627d940\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"0c3e0e3bb623c3735b8c9ab8aa8332f944f83a9f\", \"lessThan\": \"1b631bffcb2c09551888f3c723f4365c91fe05ef\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"0c3e0e3bb623c3735b8c9ab8aa8332f944f83a9f\", \"lessThan\": \"ef0394ca25953ea0eddcc82feae1f750451f1876\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"0c3e0e3bb623c3735b8c9ab8aa8332f944f83a9f\", \"lessThan\": \"3af28df0d883e8c89a29ac31bc65f9023485743b\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"0c3e0e3bb623c3735b8c9ab8aa8332f944f83a9f\", \"lessThan\": \"ff960f9d3edbe08a736b5a224d91a305ccc946b0\", \"versionType\": \"git\"}], \"programFiles\": [\"net/core/net_namespace.c\"], \"defaultStatus\": \"unaffected\"}, {\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"5.2\"}, {\"status\": \"unaffected\", \"version\": \"0\", \"lessThan\": \"5.2\", \"versionType\": \"semver\"}, {\"status\": \"unaffected\", \"version\": \"5.4.279\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.4.*\"}, {\"status\": \"unaffected\", \"version\": \"5.10.221\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.10.*\"}, {\"status\": \"unaffected\", \"version\": \"5.15.162\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.15.*\"}, {\"status\": \"unaffected\", \"version\": \"6.1.96\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.1.*\"}, {\"status\": \"unaffected\", \"version\": \"6.6.36\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.6.*\"}, {\"status\": \"unaffected\", \"version\": \"6.9.7\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.9.*\"}, {\"status\": \"unaffected\", \"version\": \"6.10\", \"versionType\": \"original_commit_for_fix\", \"lessThanOrEqual\": \"*\"}], \"programFiles\": [\"net/core/net_namespace.c\"], \"defaultStatus\": \"affected\"}], \"references\": [{\"url\": \"https://git.kernel.org/stable/c/3a6cd326ead7c8bb1f64486789a01974a9f1ad55\"}, {\"url\": \"https://git.kernel.org/stable/c/2b82028a1f5ee3a8e04090776b10c534144ae77b\"}, {\"url\": \"https://git.kernel.org/stable/c/cb7f811f638a14590ff98f53c6dd1fb54627d940\"}, {\"url\": \"https://git.kernel.org/stable/c/1b631bffcb2c09551888f3c723f4365c91fe05ef\"}, {\"url\": \"https://git.kernel.org/stable/c/ef0394ca25953ea0eddcc82feae1f750451f1876\"}, {\"url\": \"https://git.kernel.org/stable/c/3af28df0d883e8c89a29ac31bc65f9023485743b\"}, {\"url\": \"https://git.kernel.org/stable/c/ff960f9d3edbe08a736b5a224d91a305ccc946b0\"}], \"x_generator\": {\"engine\": \"bippy-1.2.0\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\nnetns: Make get_net_ns() handle zero refcount net\\n\\nSyzkaller hit a warning:\\nrefcount_t: addition on 0; use-after-free.\\nWARNING: CPU: 3 PID: 7890 at lib/refcount.c:25 refcount_warn_saturate+0xdf/0x1d0\\nModules linked in:\\nCPU: 3 PID: 7890 Comm: tun Not tainted 6.10.0-rc3-00100-gcaa4f9578aba-dirty #310\\nHardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.15.0-1 04/01/2014\\nRIP: 0010:refcount_warn_saturate+0xdf/0x1d0\\nCode: 41 49 04 31 ff 89 de e8 9f 1e cd fe 84 db 75 9c e8 76 26 cd fe c6 05 b6 41 49 04 01 90 48 c7 c7 b8 8e 25 86 e8 d2 05 b5 fe 90 \u003c0f\u003e 0b 90 90 e9 79 ff ff ff e8 53 26 cd fe 0f b6 1\\nRSP: 0018:ffff8881067b7da0 EFLAGS: 00010286\\nRAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffff811c72ac\\nRDX: ffff8881026a2140 RSI: ffffffff811c72b5 RDI: 0000000000000001\\nRBP: ffff8881067b7db0 R08: 0000000000000000 R09: 205b5d3730353139\\nR10: 0000000000000000 R11: 205d303938375420 R12: ffff8881086500c4\\nR13: ffff8881086500c4 R14: ffff8881086500b0 R15: ffff888108650040\\nFS:  00007f5b2961a4c0(0000) GS:ffff88823bd00000(0000) knlGS:0000000000000000\\nCS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033\\nCR2: 000055d7ed36fd18 CR3: 00000001482f6000 CR4: 00000000000006f0\\nDR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000\\nDR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400\\nCall Trace:\\n \u003cTASK\u003e\\n ? show_regs+0xa3/0xc0\\n ? __warn+0xa5/0x1c0\\n ? refcount_warn_saturate+0xdf/0x1d0\\n ? report_bug+0x1fc/0x2d0\\n ? refcount_warn_saturate+0xdf/0x1d0\\n ? handle_bug+0xa1/0x110\\n ? exc_invalid_op+0x3c/0xb0\\n ? asm_exc_invalid_op+0x1f/0x30\\n ? __warn_printk+0xcc/0x140\\n ? __warn_printk+0xd5/0x140\\n ? refcount_warn_saturate+0xdf/0x1d0\\n get_net_ns+0xa4/0xc0\\n ? __pfx_get_net_ns+0x10/0x10\\n open_related_ns+0x5a/0x130\\n __tun_chr_ioctl+0x1616/0x2370\\n ? __sanitizer_cov_trace_switch+0x58/0xa0\\n ? __sanitizer_cov_trace_const_cmp2+0x1c/0x30\\n ? __pfx_tun_chr_ioctl+0x10/0x10\\n tun_chr_ioctl+0x2f/0x40\\n __x64_sys_ioctl+0x11b/0x160\\n x64_sys_call+0x1211/0x20d0\\n do_syscall_64+0x9e/0x1d0\\n entry_SYSCALL_64_after_hwframe+0x77/0x7f\\nRIP: 0033:0x7f5b28f165d7\\nCode: b3 66 90 48 8b 05 b1 48 2d 00 64 c7 00 26 00 00 00 48 c7 c0 ff ff ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 b8 10 00 00 00 0f 05 \u003c48\u003e 3d 01 f0 ff ff 73 01 c3 48 8b 0d 81 48 2d 00 8\\nRSP: 002b:00007ffc2b59c5e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010\\nRAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f5b28f165d7\\nRDX: 0000000000000000 RSI: 00000000000054e3 RDI: 0000000000000003\\nRBP: 00007ffc2b59c650 R08: 00007f5b291ed8c0 R09: 00007f5b2961a4c0\\nR10: 0000000029690010 R11: 0000000000000246 R12: 0000000000400730\\nR13: 00007ffc2b59cf40 R14: 0000000000000000 R15: 0000000000000000\\n \u003c/TASK\u003e\\nKernel panic - not syncing: kernel: panic_on_warn set ...\\n\\nThis is trigger as below:\\n          ns0                                    ns1\\ntun_set_iff() //dev is tun0\\n   tun-\u003edev = dev\\n//ip link set tun0 netns ns1\\n                                       put_net() //ref is 0\\n__tun_chr_ioctl() //TUNGETDEVNETNS\\n   net = dev_net(tun-\u003edev);\\n   open_related_ns(\u0026net-\u003ens, get_net_ns); //ns1\\n     get_net_ns()\\n        get_net() //addition on 0\\n\\nUse maybe_get_net() in get_net_ns in case net\u0027s ref is zero to fix this\"}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.4.279\", \"versionStartIncluding\": \"5.2\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.10.221\", \"versionStartIncluding\": \"5.2\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.15.162\", \"versionStartIncluding\": \"5.2\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.1.96\", \"versionStartIncluding\": \"5.2\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.6.36\", \"versionStartIncluding\": \"5.2\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.9.7\", \"versionStartIncluding\": \"5.2\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.10\", \"versionStartIncluding\": \"5.2\"}], \"operator\": \"OR\"}]}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2026-05-11T20:23:07.741Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2024-40958\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-05-12T11:55:48.230Z\", \"dateReserved\": \"2024-07-12T12:17:45.593Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2024-07-12T12:32:00.431Z\", \"assignerShortName\": \"Linux\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.


Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.