CVE-2026-64436 (GCVE-0-2026-64436)

Vulnerability from cvelistv5 – Published: 2026-07-25 08:51 – Updated: 2026-07-27 05:00
VLAI
Title
net: af_key: initialize alg_key_len for IPComp states
Summary
In the Linux kernel, the following vulnerability has been resolved: net: af_key: initialize alg_key_len for IPComp states pfkey_msg2xfrm_state() handles the IPComp (SADB_X_SATYPE_IPCOMP) case by allocating x->calg and copying only the algorithm name: x->calg = kmalloc_obj(*x->calg); if (!x->calg) { err = -ENOMEM; goto out; } strcpy(x->calg->alg_name, a->name); x->props.calgo = sa->sadb_sa_encrypt; Unlike the authentication (x->aalg) and encryption (x->ealg) branches of the same function, the compression branch never initializes calg->alg_key_len. IPComp carries no key and the allocation only reserves sizeof(struct xfrm_algo) (i.e. no room for a key), so the field is left containing uninitialized slab data. calg->alg_key_len is later used as a length by xfrm_algo_clone() when an IPComp state is cloned during XFRM_MSG_MIGRATE: xfrm_state_migrate() xfrm_state_clone_and_setup() x->calg = xfrm_algo_clone(orig->calg); kmemdup(orig, xfrm_alg_len(orig)); where xfrm_alg_len() returns sizeof(*alg) + (alg_key_len + 7) / 8. With a non-zero garbage alg_key_len, kmemdup() reads past the end of the 68-byte calg object. Adding an IPComp SA via PF_KEY and then migrating it triggers (net-next, KASAN, init_on_alloc=0): BUG: KASAN: slab-out-of-bounds in kmemdup_noprof+0x44/0x60 Read of size 4164 at addr ff11000025a74980 by task diag2/9287 CPU: 3 UID: 0 PID: 9287 Comm: diag2 7.1.0-rc6-g903db046d557 #1 Call Trace: <TASK> dump_stack_lvl+0x10e/0x1f0 print_report+0xf7/0x600 kasan_report+0xe4/0x120 kasan_check_range+0x105/0x1b0 __asan_memcpy+0x23/0x60 kmemdup_noprof+0x44/0x60 xfrm_state_migrate+0x70a/0x1da0 xfrm_migrate+0x753/0x18a0 xfrm_do_migrate+0xb47/0xf10 xfrm_user_rcv_msg+0x411/0xb50 netlink_rcv_skb+0x158/0x420 xfrm_netlink_rcv+0x71/0x90 netlink_unicast+0x584/0x850 netlink_sendmsg+0x8b0/0xdc0 ____sys_sendmsg+0x9f7/0xb90 ___sys_sendmsg+0x134/0x1d0 __sys_sendmsg+0x16d/0x220 do_syscall_64+0x116/0x7d0 entry_SYSCALL_64_after_hwframe+0x77/0x7f </TASK> Allocated by task 9287: kasan_save_stack+0x33/0x60 kasan_save_track+0x14/0x30 __kasan_kmalloc+0xaa/0xb0 pfkey_add+0x2652/0x2ea0 pfkey_process+0x6d0/0x830 pfkey_sendmsg+0x42c/0x850 __sys_sendto+0x461/0x4b0 __x64_sys_sendto+0xe0/0x1c0 do_syscall_64+0x116/0x7d0 entry_SYSCALL_64_after_hwframe+0x77/0x7f The buggy address belongs to the object at ff11000025a74980 which belongs to the cache kmalloc-96 of size 96 The buggy address is located 0 bytes inside of allocated 68-byte region [ff11000025a74980, ff11000025a749c4) Depending on the uninitialized value the same field can instead request an oversized kmemdup() allocation and make the migration clone fail. The XFRM netlink path is not affected: verify_one_alg() rejects an XFRMA_ALG_COMP attribute shorter than xfrm_alg_len(), so a calg added via XFRM_MSG_NEWSA is always self-consistent. Initialize calg->alg_key_len to 0, matching the aalg/ealg branches.
Severity
7.1 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 80c9abaabf4283f7cf4a0b3597cd302506635b7f , < 58e82fc3dedb57b1432292504415b224fd2d6acb (git)
Affected: 80c9abaabf4283f7cf4a0b3597cd302506635b7f , < 01b9115b55018123ef2449ac4951f89147a8428e (git)
Affected: 80c9abaabf4283f7cf4a0b3597cd302506635b7f , < 3f63d1752d90c0e28be931a48ab5d89bc97d637d (git)
Affected: 80c9abaabf4283f7cf4a0b3597cd302506635b7f , < 273c06b81d2e902b21acc801ae18c8276c8a9b69 (git)
Affected: 80c9abaabf4283f7cf4a0b3597cd302506635b7f , < 6de2a650917bedaaefd65b17cede83c5e2c1dedd (git)
Affected: 80c9abaabf4283f7cf4a0b3597cd302506635b7f , < e8417353cbd078d10531ba3928e609c84ab09e6b (git)
Affected: 80c9abaabf4283f7cf4a0b3597cd302506635b7f , < cea34abc94b0a81e3a8b5cfb41cf45af37c2c67e (git)
Affected: 80c9abaabf4283f7cf4a0b3597cd302506635b7f , < d129c3177d7b1138fd5066fcc63a698b3ba415b0 (git)
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Linux Linux Affected: 2.6.21
Unaffected: 0 , < 2.6.21 (semver)
Unaffected: 5.10.261 , ≤ 5.10.* (semver)
Unaffected: 5.15.212 , ≤ 5.15.* (semver)
Unaffected: 6.1.178 , ≤ 6.1.* (semver)
Unaffected: 6.6.145 , ≤ 6.6.* (semver)
Unaffected: 6.12.96 , ≤ 6.12.* (semver)
Unaffected: 6.18.39 , ≤ 6.18.* (semver)
Unaffected: 7.1.4 , ≤ 7.1.* (semver)
Unaffected: 7.2-rc1 , ≤ * (original_commit_for_fix)
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{
  "containers": {
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          "programFiles": [
            "net/key/af_key.c"
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              "version": "5.15.212",
              "versionType": "semver"
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              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
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              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.96",
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      "cpeApplicability": [
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      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: af_key: initialize alg_key_len for IPComp states\n\npfkey_msg2xfrm_state() handles the IPComp (SADB_X_SATYPE_IPCOMP) case by\nallocating x-\u003ecalg and copying only the algorithm name:\n\n\tx-\u003ecalg = kmalloc_obj(*x-\u003ecalg);\n\tif (!x-\u003ecalg) {\n\t\terr = -ENOMEM;\n\t\tgoto out;\n\t}\n\tstrcpy(x-\u003ecalg-\u003ealg_name, a-\u003ename);\n\tx-\u003eprops.calgo = sa-\u003esadb_sa_encrypt;\n\nUnlike the authentication (x-\u003eaalg) and encryption (x-\u003eealg) branches of\nthe same function, the compression branch never initializes\ncalg-\u003ealg_key_len.  IPComp carries no key and the allocation only\nreserves sizeof(struct xfrm_algo) (i.e. no room for a key), so the field\nis left containing uninitialized slab data.\n\ncalg-\u003ealg_key_len is later used as a length by xfrm_algo_clone() when an\nIPComp state is cloned during XFRM_MSG_MIGRATE:\n\n\txfrm_state_migrate()\n\t  xfrm_state_clone_and_setup()\n\t    x-\u003ecalg = xfrm_algo_clone(orig-\u003ecalg);\n\t      kmemdup(orig, xfrm_alg_len(orig));\n\nwhere xfrm_alg_len() returns sizeof(*alg) + (alg_key_len + 7) / 8.  With\na non-zero garbage alg_key_len, kmemdup() reads past the end of the\n68-byte calg object.  Adding an IPComp SA via PF_KEY and then migrating\nit triggers (net-next, KASAN, init_on_alloc=0):\n\n  BUG: KASAN: slab-out-of-bounds in kmemdup_noprof+0x44/0x60\n  Read of size 4164 at addr ff11000025a74980 by task diag2/9287\n  CPU: 3 UID: 0 PID: 9287 Comm: diag2 7.1.0-rc6-g903db046d557 #1\n  Call Trace:\n   \u003cTASK\u003e\n   dump_stack_lvl+0x10e/0x1f0\n   print_report+0xf7/0x600\n   kasan_report+0xe4/0x120\n   kasan_check_range+0x105/0x1b0\n   __asan_memcpy+0x23/0x60\n   kmemdup_noprof+0x44/0x60\n   xfrm_state_migrate+0x70a/0x1da0\n   xfrm_migrate+0x753/0x18a0\n   xfrm_do_migrate+0xb47/0xf10\n   xfrm_user_rcv_msg+0x411/0xb50\n   netlink_rcv_skb+0x158/0x420\n   xfrm_netlink_rcv+0x71/0x90\n   netlink_unicast+0x584/0x850\n   netlink_sendmsg+0x8b0/0xdc0\n   ____sys_sendmsg+0x9f7/0xb90\n   ___sys_sendmsg+0x134/0x1d0\n   __sys_sendmsg+0x16d/0x220\n   do_syscall_64+0x116/0x7d0\n   entry_SYSCALL_64_after_hwframe+0x77/0x7f\n   \u003c/TASK\u003e\n\n  Allocated by task 9287:\n   kasan_save_stack+0x33/0x60\n   kasan_save_track+0x14/0x30\n   __kasan_kmalloc+0xaa/0xb0\n   pfkey_add+0x2652/0x2ea0\n   pfkey_process+0x6d0/0x830\n   pfkey_sendmsg+0x42c/0x850\n   __sys_sendto+0x461/0x4b0\n   __x64_sys_sendto+0xe0/0x1c0\n   do_syscall_64+0x116/0x7d0\n   entry_SYSCALL_64_after_hwframe+0x77/0x7f\n\n  The buggy address belongs to the object at ff11000025a74980\n   which belongs to the cache kmalloc-96 of size 96\n  The buggy address is located 0 bytes inside of\n   allocated 68-byte region [ff11000025a74980, ff11000025a749c4)\n\nDepending on the uninitialized value the same field can instead request\nan oversized kmemdup() allocation and make the migration clone fail.\n\nThe XFRM netlink path is not affected: verify_one_alg() rejects an\nXFRMA_ALG_COMP attribute shorter than xfrm_alg_len(), so a calg added via\nXFRM_MSG_NEWSA is always self-consistent.\n\nInitialize calg-\u003ealg_key_len to 0, matching the aalg/ealg branches."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 7.1,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H",
            "version": "3.1"
          }
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-07-27T05:00:57.092Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/58e82fc3dedb57b1432292504415b224fd2d6acb"
        },
        {
          "url": "https://git.kernel.org/stable/c/01b9115b55018123ef2449ac4951f89147a8428e"
        },
        {
          "url": "https://git.kernel.org/stable/c/3f63d1752d90c0e28be931a48ab5d89bc97d637d"
        },
        {
          "url": "https://git.kernel.org/stable/c/273c06b81d2e902b21acc801ae18c8276c8a9b69"
        },
        {
          "url": "https://git.kernel.org/stable/c/6de2a650917bedaaefd65b17cede83c5e2c1dedd"
        },
        {
          "url": "https://git.kernel.org/stable/c/e8417353cbd078d10531ba3928e609c84ab09e6b"
        },
        {
          "url": "https://git.kernel.org/stable/c/cea34abc94b0a81e3a8b5cfb41cf45af37c2c67e"
        },
        {
          "url": "https://git.kernel.org/stable/c/d129c3177d7b1138fd5066fcc63a698b3ba415b0"
        }
      ],
      "title": "net: af_key: initialize alg_key_len for IPComp states",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-64436",
    "datePublished": "2026-07-25T08:51:10.370Z",
    "dateReserved": "2026-07-19T15:36:31.787Z",
    "dateUpdated": "2026-07-27T05:00:57.092Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2026-64436",
      "date": "2026-07-26",
      "epss": "0.00178",
      "percentile": "0.07591"
    },
    "microsoft_vex": {
      "current_release_date": "2026-07-26T01:11:12.000Z",
      "cve": "CVE-2026-64436",
      "id": "msrc_CVE-2026-64436",
      "initial_release_date": "2026-07-26T01:11:12.000Z",
      "product_status:under_investigation": "1",
      "source": "Microsoft CSAF VEX",
      "status": "final",
      "title": "net: af_key: initialize alg_key_len for IPComp states",
      "url": "https://msrc.microsoft.com/csaf/vex/2026/msrc_cve-2026-64436.json",
      "version": "1"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2026-64436\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2026-07-25T10:17:28.010\",\"lastModified\":\"2026-07-27T05:16:50.033\",\"vulnStatus\":\"Received\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nnet: af_key: initialize alg_key_len for IPComp states\\n\\npfkey_msg2xfrm_state() handles the IPComp (SADB_X_SATYPE_IPCOMP) case by\\nallocating x-\u003ecalg and copying only the algorithm name:\\n\\n\\tx-\u003ecalg = kmalloc_obj(*x-\u003ecalg);\\n\\tif (!x-\u003ecalg) {\\n\\t\\terr = -ENOMEM;\\n\\t\\tgoto out;\\n\\t}\\n\\tstrcpy(x-\u003ecalg-\u003ealg_name, a-\u003ename);\\n\\tx-\u003eprops.calgo = sa-\u003esadb_sa_encrypt;\\n\\nUnlike the authentication (x-\u003eaalg) and encryption (x-\u003eealg) branches of\\nthe same function, the compression branch never initializes\\ncalg-\u003ealg_key_len.  IPComp carries no key and the allocation only\\nreserves sizeof(struct xfrm_algo) (i.e. no room for a key), so the field\\nis left containing uninitialized slab data.\\n\\ncalg-\u003ealg_key_len is later used as a length by xfrm_algo_clone() when an\\nIPComp state is cloned during XFRM_MSG_MIGRATE:\\n\\n\\txfrm_state_migrate()\\n\\t  xfrm_state_clone_and_setup()\\n\\t    x-\u003ecalg = xfrm_algo_clone(orig-\u003ecalg);\\n\\t      kmemdup(orig, xfrm_alg_len(orig));\\n\\nwhere xfrm_alg_len() returns sizeof(*alg) + (alg_key_len + 7) / 8.  With\\na non-zero garbage alg_key_len, kmemdup() reads past the end of the\\n68-byte calg object.  Adding an IPComp SA via PF_KEY and then migrating\\nit triggers (net-next, KASAN, init_on_alloc=0):\\n\\n  BUG: KASAN: slab-out-of-bounds in kmemdup_noprof+0x44/0x60\\n  Read of size 4164 at addr ff11000025a74980 by task diag2/9287\\n  CPU: 3 UID: 0 PID: 9287 Comm: diag2 7.1.0-rc6-g903db046d557 #1\\n  Call Trace:\\n   \u003cTASK\u003e\\n   dump_stack_lvl+0x10e/0x1f0\\n   print_report+0xf7/0x600\\n   kasan_report+0xe4/0x120\\n   kasan_check_range+0x105/0x1b0\\n   __asan_memcpy+0x23/0x60\\n   kmemdup_noprof+0x44/0x60\\n   xfrm_state_migrate+0x70a/0x1da0\\n   xfrm_migrate+0x753/0x18a0\\n   xfrm_do_migrate+0xb47/0xf10\\n   xfrm_user_rcv_msg+0x411/0xb50\\n   netlink_rcv_skb+0x158/0x420\\n   xfrm_netlink_rcv+0x71/0x90\\n   netlink_unicast+0x584/0x850\\n   netlink_sendmsg+0x8b0/0xdc0\\n   ____sys_sendmsg+0x9f7/0xb90\\n   ___sys_sendmsg+0x134/0x1d0\\n   __sys_sendmsg+0x16d/0x220\\n   do_syscall_64+0x116/0x7d0\\n   entry_SYSCALL_64_after_hwframe+0x77/0x7f\\n   \u003c/TASK\u003e\\n\\n  Allocated by task 9287:\\n   kasan_save_stack+0x33/0x60\\n   kasan_save_track+0x14/0x30\\n   __kasan_kmalloc+0xaa/0xb0\\n   pfkey_add+0x2652/0x2ea0\\n   pfkey_process+0x6d0/0x830\\n   pfkey_sendmsg+0x42c/0x850\\n   __sys_sendto+0x461/0x4b0\\n   __x64_sys_sendto+0xe0/0x1c0\\n   do_syscall_64+0x116/0x7d0\\n   entry_SYSCALL_64_after_hwframe+0x77/0x7f\\n\\n  The buggy address belongs to the object at ff11000025a74980\\n   which belongs to the cache kmalloc-96 of size 96\\n  The buggy address is located 0 bytes inside of\\n   allocated 68-byte region [ff11000025a74980, ff11000025a749c4)\\n\\nDepending on the uninitialized value the same field can instead request\\nan oversized kmemdup() allocation and make the migration clone fail.\\n\\nThe XFRM netlink path is not affected: verify_one_alg() rejects an\\nXFRMA_ALG_COMP attribute shorter than xfrm_alg_len(), so a calg added via\\nXFRM_MSG_NEWSA is always self-consistent.\\n\\nInitialize calg-\u003ealg_key_len to 0, matching the aalg/ealg branches.\"}],\"affected\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"affectedData\":[{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"unaffected\",\"programFiles\":[\"net/key/af_key.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"80c9abaabf4283f7cf4a0b3597cd302506635b7f\",\"lessThan\":\"58e82fc3dedb57b1432292504415b224fd2d6acb\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"80c9abaabf4283f7cf4a0b3597cd302506635b7f\",\"lessThan\":\"01b9115b55018123ef2449ac4951f89147a8428e\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"80c9abaabf4283f7cf4a0b3597cd302506635b7f\",\"lessThan\":\"3f63d1752d90c0e28be931a48ab5d89bc97d637d\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"80c9abaabf4283f7cf4a0b3597cd302506635b7f\",\"lessThan\":\"273c06b81d2e902b21acc801ae18c8276c8a9b69\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"80c9abaabf4283f7cf4a0b3597cd302506635b7f\",\"lessThan\":\"6de2a650917bedaaefd65b17cede83c5e2c1dedd\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"80c9abaabf4283f7cf4a0b3597cd302506635b7f\",\"lessThan\":\"e8417353cbd078d10531ba3928e609c84ab09e6b\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"80c9abaabf4283f7cf4a0b3597cd302506635b7f\",\"lessThan\":\"cea34abc94b0a81e3a8b5cfb41cf45af37c2c67e\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"80c9abaabf4283f7cf4a0b3597cd302506635b7f\",\"lessThan\":\"d129c3177d7b1138fd5066fcc63a698b3ba415b0\",\"versionType\":\"git\",\"status\":\"affected\"}]},{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"affected\",\"programFiles\":[\"net/key/af_key.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"2.6.21\",\"status\":\"affected\"},{\"version\":\"0\",\"lessThan\":\"2.6.21\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.10.261\",\"lessThanOrEqual\":\"5.10.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.15.212\",\"lessThanOrEqual\":\"5.15.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.1.178\",\"lessThanOrEqual\":\"6.1.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.6.145\",\"lessThanOrEqual\":\"6.6.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.12.96\",\"lessThanOrEqual\":\"6.12.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.18.39\",\"lessThanOrEqual\":\"6.18.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"7.1.4\",\"lessThanOrEqual\":\"7.1.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"7.2-rc1\",\"lessThanOrEqual\":\"*\",\"versionType\":\"original_commit_for_fix\",\"status\":\"unaffected\"}]}]}],\"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:N/A:H\",\"baseScore\":7.1,\"baseSeverity\":\"HIGH\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.8,\"impactScore\":5.2}]},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/01b9115b55018123ef2449ac4951f89147a8428e\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/273c06b81d2e902b21acc801ae18c8276c8a9b69\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/3f63d1752d90c0e28be931a48ab5d89bc97d637d\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/58e82fc3dedb57b1432292504415b224fd2d6acb\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/6de2a650917bedaaefd65b17cede83c5e2c1dedd\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/cea34abc94b0a81e3a8b5cfb41cf45af37c2c67e\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/d129c3177d7b1138fd5066fcc63a698b3ba415b0\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/e8417353cbd078d10531ba3928e609c84ab09e6b\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}",
    "suse_vex": {
      "aggregate_severity": "not set",
      "current_release_date": "2026-07-25T15:59:23Z",
      "cve": "CVE-2026-64436",
      "id": "CVE-2026-64436",
      "initial_release_date": "2026-07-25T15:59:23Z",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2026-64436",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2026-64436.json",
      "version": "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.