fkie_cve-2024-56614
Vulnerability from fkie_nvd
Published
2024-12-27 15:15
Modified
2025-01-08 17:10
Severity ?
7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Summary
In the Linux kernel, the following vulnerability has been resolved: xsk: fix OOB map writes when deleting elements Jordy says: " In the xsk_map_delete_elem function an unsigned integer (map->max_entries) is compared with a user-controlled signed integer (k). Due to implicit type conversion, a large unsigned value for map->max_entries can bypass the intended bounds check: if (k >= map->max_entries) return -EINVAL; This allows k to hold a negative value (between -2147483648 and -2), which is then used as an array index in m->xsk_map[k], which results in an out-of-bounds access. spin_lock_bh(&m->lock); map_entry = &m->xsk_map[k]; // Out-of-bounds map_entry old_xs = unrcu_pointer(xchg(map_entry, NULL)); // Oob write if (old_xs) xsk_map_sock_delete(old_xs, map_entry); spin_unlock_bh(&m->lock); The xchg operation can then be used to cause an out-of-bounds write. Moreover, the invalid map_entry passed to xsk_map_sock_delete can lead to further memory corruption. " It indeed results in following splat: [76612.897343] BUG: unable to handle page fault for address: ffffc8fc2e461108 [76612.904330] #PF: supervisor write access in kernel mode [76612.909639] #PF: error_code(0x0002) - not-present page [76612.914855] PGD 0 P4D 0 [76612.917431] Oops: Oops: 0002 [#1] PREEMPT SMP [76612.921859] CPU: 11 UID: 0 PID: 10318 Comm: a.out Not tainted 6.12.0-rc1+ #470 [76612.929189] Hardware name: Intel Corporation S2600WFT/S2600WFT, BIOS SE5C620.86B.02.01.0008.031920191559 03/19/2019 [76612.939781] RIP: 0010:xsk_map_delete_elem+0x2d/0x60 [76612.944738] Code: 00 00 41 54 55 53 48 63 2e 3b 6f 24 73 38 4c 8d a7 f8 00 00 00 48 89 fb 4c 89 e7 e8 2d bf 05 00 48 8d b4 eb 00 01 00 00 31 ff <48> 87 3e 48 85 ff 74 05 e8 16 ff ff ff 4c 89 e7 e8 3e bc 05 00 31 [76612.963774] RSP: 0018:ffffc9002e407df8 EFLAGS: 00010246 [76612.969079] RAX: 0000000000000000 RBX: ffffc9002e461000 RCX: 0000000000000000 [76612.976323] RDX: 0000000000000001 RSI: ffffc8fc2e461108 RDI: 0000000000000000 [76612.983569] RBP: ffffffff80000001 R08: 0000000000000000 R09: 0000000000000007 [76612.990812] R10: ffffc9002e407e18 R11: ffff888108a38858 R12: ffffc9002e4610f8 [76612.998060] R13: ffff888108a38858 R14: 00007ffd1ae0ac78 R15: ffffc9002e4610c0 [76613.005303] FS: 00007f80b6f59740(0000) GS:ffff8897e0ec0000(0000) knlGS:0000000000000000 [76613.013517] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [76613.019349] CR2: ffffc8fc2e461108 CR3: 000000011e3ef001 CR4: 00000000007726f0 [76613.026595] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [76613.033841] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [76613.041086] PKRU: 55555554 [76613.043842] Call Trace: [76613.046331] <TASK> [76613.048468] ? __die+0x20/0x60 [76613.051581] ? page_fault_oops+0x15a/0x450 [76613.055747] ? search_extable+0x22/0x30 [76613.059649] ? search_bpf_extables+0x5f/0x80 [76613.063988] ? exc_page_fault+0xa9/0x140 [76613.067975] ? asm_exc_page_fault+0x22/0x30 [76613.072229] ? xsk_map_delete_elem+0x2d/0x60 [76613.076573] ? xsk_map_delete_elem+0x23/0x60 [76613.080914] __sys_bpf+0x19b7/0x23c0 [76613.084555] __x64_sys_bpf+0x1a/0x20 [76613.088194] do_syscall_64+0x37/0xb0 [76613.091832] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [76613.096962] RIP: 0033:0x7f80b6d1e88d [76613.100592] Code: 5b 41 5c c3 66 0f 1f 84 00 00 00 00 00 f3 0f 1e fa 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 73 b5 0f 00 f7 d8 64 89 01 48 [76613.119631] RSP: 002b:00007ffd1ae0ac68 EFLAGS: 00000206 ORIG_RAX: 0000000000000141 [76613.131330] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f80b6d1e88d [76613.142632] RDX: 0000000000000098 RSI: 00007ffd1ae0ad20 RDI: 0000000000000003 [76613.153967] RBP: 00007ffd1ae0adc0 R08: 0000000000000000 R09: 0000000000000000 [76613.166030] R10: 00007f80b6f77040 R11: 0000000000000206 R12: 00007ffd1ae0aed8 [76613.177130] R13: 000055ddf42ce1e9 R14: 000055ddf42d0d98 R15: 00 ---truncated---
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/32cd3db7de97c0c7a018756ce66244342fd583f0Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/4d03f705e9d7aabebc6bfa5810f8aab6d176cbb7Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/d486b5741d987d3e0e6be4ac22cafdf94e6d1a47Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/ed08c93d5a9801cc8f224a046411fd603c538d07Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/f8abd03f83d5fe81e76eb93e2c4373eb9f75fd8aPatch
Impacted products
Vendor Product Version
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel 6.13


To clipboard 

{
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "A8151951-069A-4828-9C8E-5430FD2D7D67",
              "versionEndExcluding": "5.15.174",
              "versionStartIncluding": "4.18",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "09AC6122-E2A4-40FE-9D33-268A1B2EC265",
              "versionEndExcluding": "6.1.120",
              "versionStartIncluding": "5.16",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "29A976AD-B9AB-4A95-9F08-7669F8847EB9",
              "versionEndExcluding": "6.6.66",
              "versionStartIncluding": "6.2",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "9501D045-7A94-42CA-8B03-821BE94A65B7",
              "versionEndExcluding": "6.12.5",
              "versionStartIncluding": "6.7",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:6.13:rc1:*:*:*:*:*:*",
              "matchCriteriaId": "62567B3C-6CEE-46D0-BC2E-B3717FBF7D13",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nxsk: fix OOB map writes when deleting elements\n\nJordy says:\n\n\"\nIn the xsk_map_delete_elem function an unsigned integer\n(map-\u003emax_entries) is compared with a user-controlled signed integer\n(k). Due to implicit type conversion, a large unsigned value for\nmap-\u003emax_entries can bypass the intended bounds check:\n\n\tif (k \u003e= map-\u003emax_entries)\n\t\treturn -EINVAL;\n\nThis allows k to hold a negative value (between -2147483648 and -2),\nwhich is then used as an array index in m-\u003exsk_map[k], which results\nin an out-of-bounds access.\n\n\tspin_lock_bh(\u0026m-\u003elock);\n\tmap_entry = \u0026m-\u003exsk_map[k]; // Out-of-bounds map_entry\n\told_xs = unrcu_pointer(xchg(map_entry, NULL));  // Oob write\n\tif (old_xs)\n\t\txsk_map_sock_delete(old_xs, map_entry);\n\tspin_unlock_bh(\u0026m-\u003elock);\n\nThe xchg operation can then be used to cause an out-of-bounds write.\nMoreover, the invalid map_entry passed to xsk_map_sock_delete can lead\nto further memory corruption.\n\"\n\nIt indeed results in following splat:\n\n[76612.897343] BUG: unable to handle page fault for address: ffffc8fc2e461108\n[76612.904330] #PF: supervisor write access in kernel mode\n[76612.909639] #PF: error_code(0x0002) - not-present page\n[76612.914855] PGD 0 P4D 0\n[76612.917431] Oops: Oops: 0002 [#1] PREEMPT SMP\n[76612.921859] CPU: 11 UID: 0 PID: 10318 Comm: a.out Not tainted 6.12.0-rc1+ #470\n[76612.929189] Hardware name: Intel Corporation S2600WFT/S2600WFT, BIOS SE5C620.86B.02.01.0008.031920191559 03/19/2019\n[76612.939781] RIP: 0010:xsk_map_delete_elem+0x2d/0x60\n[76612.944738] Code: 00 00 41 54 55 53 48 63 2e 3b 6f 24 73 38 4c 8d a7 f8 00 00 00 48 89 fb 4c 89 e7 e8 2d bf 05 00 48 8d b4 eb 00 01 00 00 31 ff \u003c48\u003e 87 3e 48 85 ff 74 05 e8 16 ff ff ff 4c 89 e7 e8 3e bc 05 00 31\n[76612.963774] RSP: 0018:ffffc9002e407df8 EFLAGS: 00010246\n[76612.969079] RAX: 0000000000000000 RBX: ffffc9002e461000 RCX: 0000000000000000\n[76612.976323] RDX: 0000000000000001 RSI: ffffc8fc2e461108 RDI: 0000000000000000\n[76612.983569] RBP: ffffffff80000001 R08: 0000000000000000 R09: 0000000000000007\n[76612.990812] R10: ffffc9002e407e18 R11: ffff888108a38858 R12: ffffc9002e4610f8\n[76612.998060] R13: ffff888108a38858 R14: 00007ffd1ae0ac78 R15: ffffc9002e4610c0\n[76613.005303] FS:  00007f80b6f59740(0000) GS:ffff8897e0ec0000(0000) knlGS:0000000000000000\n[76613.013517] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033\n[76613.019349] CR2: ffffc8fc2e461108 CR3: 000000011e3ef001 CR4: 00000000007726f0\n[76613.026595] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000\n[76613.033841] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400\n[76613.041086] PKRU: 55555554\n[76613.043842] Call Trace:\n[76613.046331]  \u003cTASK\u003e\n[76613.048468]  ? __die+0x20/0x60\n[76613.051581]  ? page_fault_oops+0x15a/0x450\n[76613.055747]  ? search_extable+0x22/0x30\n[76613.059649]  ? search_bpf_extables+0x5f/0x80\n[76613.063988]  ? exc_page_fault+0xa9/0x140\n[76613.067975]  ? asm_exc_page_fault+0x22/0x30\n[76613.072229]  ? xsk_map_delete_elem+0x2d/0x60\n[76613.076573]  ? xsk_map_delete_elem+0x23/0x60\n[76613.080914]  __sys_bpf+0x19b7/0x23c0\n[76613.084555]  __x64_sys_bpf+0x1a/0x20\n[76613.088194]  do_syscall_64+0x37/0xb0\n[76613.091832]  entry_SYSCALL_64_after_hwframe+0x4b/0x53\n[76613.096962] RIP: 0033:0x7f80b6d1e88d\n[76613.100592] Code: 5b 41 5c c3 66 0f 1f 84 00 00 00 00 00 f3 0f 1e fa 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 \u003c48\u003e 3d 01 f0 ff ff 73 01 c3 48 8b 0d 73 b5 0f 00 f7 d8 64 89 01 48\n[76613.119631] RSP: 002b:00007ffd1ae0ac68 EFLAGS: 00000206 ORIG_RAX: 0000000000000141\n[76613.131330] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f80b6d1e88d\n[76613.142632] RDX: 0000000000000098 RSI: 00007ffd1ae0ad20 RDI: 0000000000000003\n[76613.153967] RBP: 00007ffd1ae0adc0 R08: 0000000000000000 R09: 0000000000000000\n[76613.166030] R10: 00007f80b6f77040 R11: 0000000000000206 R12: 00007ffd1ae0aed8\n[76613.177130] R13: 000055ddf42ce1e9 R14: 000055ddf42d0d98 R15: 00\n---truncated---"
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: xsk: se corrige la escritura en mapas OOB al eliminar elementos Jordy dice: \"En la funci\u00f3n xsk_map_delete_elem, un entero sin signo (map-\u0026gt;max_entries) se compara con un entero con signo controlado por el usuario (k). Debido a la conversi\u00f3n de tipo impl\u00edcita, un valor sin signo grande para map-\u0026gt;max_entries puede eludir la comprobaci\u00f3n de los l\u00edmites prevista: if (k \u0026gt;= map-\u0026gt;max_entries) return -EINVAL; Esto permite que k contenga un valor negativo (entre -2147483648 y -2), que luego se utiliza como un \u00edndice de matriz en m-\u0026gt;xsk_map[k], lo que da como resultado un acceso fuera de los l\u00edmites. spin_lock_bh(\u0026amp;m-\u0026gt;lock); map_entry = \u0026amp;m-\u0026gt;xsk_map[k]; // Entrada de mapa fuera de los l\u00edmites old_xs = unrcu_pointer(xchg(map_entry, NULL)); // Oob write if (old_xs) xsk_map_sock_delete(old_xs, map_entry); spin_unlock_bh(\u0026amp;m-\u0026gt;lock); La operaci\u00f3n xchg se puede utilizar para provocar una escritura fuera de los l\u00edmites. Adem\u00e1s, la map_entry no v\u00e1lida pasada a xsk_map_sock_delete puede provocar una mayor corrupci\u00f3n de la memoria. \" De hecho, da como resultado el siguiente error: [76612.897343] ERROR: no se puede gestionar la falla de p\u00e1gina para la direcci\u00f3n: ffffc8fc2e461108 [76612.904330] #PF: acceso de escritura del supervisor en modo kernel [76612.909639] #PF: error_code(0x0002) - p\u00e1gina no presente [76612.914855] PGD 0 P4D 0 [76612.917431] Ups: Ups: 0002 [#1] PREEMPT SMP [76612.921859] CPU: 11 UID: 0 PID: 10318 Comm: a.out No contaminado 6.12.0-rc1+ #470 [76612.929189] Nombre del hardware: Intel Corporation S2600WFT/S2600WFT, BIOS SE5C620.86B.02.01.0008.031920191559 19/03/2019 [76612.939781] RIP: 0010:xsk_map_delete_elem+0x2d/0x60 [76612.944738] C\u00f3digo: 00 00 41 54 55 53 48 63 2e 3b 6f 24 73 38 4c 8d a7 f8 00 00 00 48 89 fb 4c 89 e7 e8 2d bf 05 00 48 8d b4 eb 00 01 00 00 31 y siguientes \u0026lt;48\u0026gt; 87 3e 48 85 y siguientes 74 05 e8 16 y siguientes y siguientes y siguientes 4c 89 e7 e8 3e bc 05 00 31 [76612.963774] RSP: 0018:ffffc9002e407df8 EFLAGS: 00010246 [76612.969079] RAX: 0000000000000000 RBX: ffffc9002e461000 RCX: 0000000000000000 [76612.976323] RDX: 0000000000000001 RSI: ffffc8fc2e461108 RDI: 00000000000000000 [76612.983569] RBP: ffffffff80000001 R08: 0000000000000000 R09: 0000000000000007 [76612.990812] R10: ffffc9002e407e18 R11: ffff888108a38858 R12: ffffc9002e4610f8 [76612.998060] R13: ffff888108a38858 R14: 00007ffd1ae0ac78 R15: ffffc9002e4610c0 [76613.005303] FS: 00007f80b6f59740(0000) GS:ffff8897e0ec0000(0000) knlGS:0000000000000000 [76613.013517] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [76613.019349] CR2: ffffc8fc2e461108 CR3: 000000011e3ef001 CR4: 00000000007726f0 [76613.026595] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 000000000000000 [76613.033841] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [76613.041086] PKRU: 55555554 [76613.043842] Seguimiento de llamadas: [76613.046331]  [76613.048468] ? __die+0x20/0x60 [76613.051581] ? error_de_p\u00e1gina_oops+0x15a/0x450 [76613.055747] ? b\u00fasqueda_extable+0x22/0x30 [76613.059649] ? b\u00fasqueda_bpf_extables+0x5f/0x80 [76613.063988] ? error_de_p\u00e1gina_exc+0xa9/0x140 [76613.067975] ? error_de_p\u00e1gina_exc+0x22/0x30 [76613.072229] ? \u00bfxsk_map_delete_elem+0x2d/0x60 [76613.076573] ? xsk_map_delete_elem+0x23/0x60 [76613.080914] __sys_bpf+0x19b7/0x23c0 [76613.084555] __x64_sys_bpf+0x1a/0x20 [76613.088194] hacer_syscall_64+0x37/0xb0 [76613.091832] entrada_SYSCALL_64_after_hwframe+0x4b/0x53 [76613.096962] RIP: 0033:0x7f80b6d1e88d [76613.100592] C\u00f3digo: 5b 41 5c c3 66 0f 1f 84 00 00 00 00 00 f3 0f 1e fa 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 \u0026lt;48\u0026gt; 3d 01 f0 ff ff 73 01 c3 48 8b 0d 73 b5 0f 00 f7 d8 64 89 01 48 [76613.119631] RSP: 002b:00007ffd1ae0ac68 EFLAGS: 00000206 ORIG_RAX: 0000000000000141 [76613.131330] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f80b6d1e88d [76613.142632] RDX: 000000000000000098 RSI: 00007ffd1ae0ad20 RDI: 0000000000000003 [76613.153967]  ---truncado---"
    }
  ],
  "id": "CVE-2024-56614",
  "lastModified": "2025-01-08T17:10:39.210",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 7.8,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 5.9,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ]
  },
  "published": "2024-12-27T15:15:20.897",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/32cd3db7de97c0c7a018756ce66244342fd583f0"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/4d03f705e9d7aabebc6bfa5810f8aab6d176cbb7"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/d486b5741d987d3e0e6be4ac22cafdf94e6d1a47"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/ed08c93d5a9801cc8f224a046411fd603c538d07"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/f8abd03f83d5fe81e76eb93e2c4373eb9f75fd8a"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-787"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}


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