CVE-2026-64436

🗓️ 25 Jul 2026 08:51:10Reported by LinuxType

Linux kernel fix: initialize alg_key_len for IPComp states to prevent reads during XFRM migration.

Reporter	Title	Published	Views	Family All 11
ATTACKERKB	CVE-2026-64436	25 Jul 202608:51	–	attackerkb
Cvelist	CVE-2026-64436 net: af_key: initialize alg_key_len for IPComp states	25 Jul 202608:51	–	cvelist
Debian CVE	CVE-2026-64436	25 Jul 202608:51	–	debiancve
EUVD	EUVD-2026-48780	25 Jul 202608:51	–	euvd
NVD	CVE-2026-64436	25 Jul 202610:17	–	nvd
OSV	CVE-2026-64436 net: af_key: initialize alg_key_len for IPComp states	25 Jul 202608:51	–	osv
OSV	DEBIAN-CVE-2026-64436	25 Jul 202610:17	–	osv
OSV	ECHO-0115-47FB-5BBC	26 Jul 202602:26	–	osv
Positive Technologies	PT-2026-64657	25 Jul 202600:00	–	ptsecurity
SUSE CVE	SUSE CVE-2026-64436	25 Jul 202615:59	–	susecve

Vulners

CNA

Node

linux linux_kernelRange2.6.21–5.10.261

linux linux_kernelRange5.11.0–5.15.212

linux linux_kernelRange5.16.0–6.1.178

linux linux_kernelRange6.2.0–6.6.145

linux linux_kernelRange6.7.0–6.12.96

linux linux_kernelRange6.13.0–6.18.39

linux linux_kernelRange6.19.0–7.1.4

linux linux_kernelRange7.2.0–7.2-rc1

[
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "unaffected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "net/key/af_key.c"
    ],
    "versions": [
      {
        "version": "80c9abaabf4283f7cf4a0b3597cd302506635b7f",
        "lessThan": "58e82fc3dedb57b1432292504415b224fd2d6acb",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "80c9abaabf4283f7cf4a0b3597cd302506635b7f",
        "lessThan": "01b9115b55018123ef2449ac4951f89147a8428e",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "80c9abaabf4283f7cf4a0b3597cd302506635b7f",
        "lessThan": "3f63d1752d90c0e28be931a48ab5d89bc97d637d",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "80c9abaabf4283f7cf4a0b3597cd302506635b7f",
        "lessThan": "273c06b81d2e902b21acc801ae18c8276c8a9b69",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "80c9abaabf4283f7cf4a0b3597cd302506635b7f",
        "lessThan": "6de2a650917bedaaefd65b17cede83c5e2c1dedd",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "80c9abaabf4283f7cf4a0b3597cd302506635b7f",
        "lessThan": "e8417353cbd078d10531ba3928e609c84ab09e6b",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "80c9abaabf4283f7cf4a0b3597cd302506635b7f",
        "lessThan": "cea34abc94b0a81e3a8b5cfb41cf45af37c2c67e",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "80c9abaabf4283f7cf4a0b3597cd302506635b7f",
        "lessThan": "d129c3177d7b1138fd5066fcc63a698b3ba415b0",
        "status": "affected",
        "versionType": "git"
      }
    ]
  },
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "affected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "net/key/af_key.c"
    ],
    "versions": [
      {
        "version": "2.6.21",
        "status": "affected"
      },
      {
        "version": "0",
        "lessThan": "2.6.21",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "5.10.261",
        "lessThanOrEqual": "5.10.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "5.15.212",
        "lessThanOrEqual": "5.15.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.1.178",
        "lessThanOrEqual": "6.1.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.6.145",
        "lessThanOrEqual": "6.6.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.12.96",
        "lessThanOrEqual": "6.12.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.18.39",
        "lessThanOrEqual": "6.18.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "7.1.4",
        "lessThanOrEqual": "7.1.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "7.2-rc1",
        "lessThanOrEqual": "*",
        "status": "unaffected",
        "versionType": "original_commit_for_fix"
      }
    ]
  }
]

Source	Link
git	www.git.kernel.org/stable/c/273c06b81d2e902b21acc801ae18c8276c8a9b69
git	www.git.kernel.org/stable/c/e8417353cbd078d10531ba3928e609c84ab09e6b
git	www.git.kernel.org/stable/c/58e82fc3dedb57b1432292504415b224fd2d6acb
git	www.git.kernel.org/stable/c/d129c3177d7b1138fd5066fcc63a698b3ba415b0
git	www.git.kernel.org/stable/c/cea34abc94b0a81e3a8b5cfb41cf45af37c2c67e
git	www.git.kernel.org/stable/c/6de2a650917bedaaefd65b17cede83c5e2c1dedd
git	www.git.kernel.org/stable/c/01b9115b55018123ef2449ac4951f89147a8428e
git	www.git.kernel.org/stable/c/3f63d1752d90c0e28be931a48ab5d89bc97d637d

25 Jul 2026 10:17Current

5.8Medium risk

Vulners AI Score5.8

EPSS0.00215