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CVE-2026-64581

🗓️ 05 Aug 2026 08:09:35Reported by LinuxType 
cve
 cve
🔗 web.nvd.nist.gov👁 212 Views

Linux kernel fix for xfrm_user_policy double free by atomic dst cache reset; prevents user namespace exploit.

Related
Detection
Affected
Refs
Vulners
CNA
Node
OR
OR
linuxlinux_kernelRange3.16.523.17
linuxlinux_kernelRange4.4.1634.5
linuxlinux_kernelRange3.18.1013.19
linuxlinux_kernelRange4.1.524.2
linuxlinux_kernelRange4.4.1234.5
linuxlinux_kernelRange4.9.894.10
OR
linuxlinux_kernelRange4.145.10.267
linuxlinux_kernelRange5.11.05.15.218
linuxlinux_kernelRange5.16.06.1.185
linuxlinux_kernelRange6.2.06.6.154
linuxlinux_kernelRange6.7.06.12.106
linuxlinux_kernelRange6.13.06.18.47
linuxlinux_kernelRange6.19.07.1.6
linuxlinux_kernelRange7.2.0
[
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "unaffected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "net/xfrm/xfrm_state.c"
    ],
    "versions": [
      {
        "version": "2b06cdf3e688b98fcc9945873b5d42792bd4eee0",
        "lessThan": "e8686fd8d18b99f3a9038683045b2f2338a7706d",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "2b06cdf3e688b98fcc9945873b5d42792bd4eee0",
        "lessThan": "a9340ebdc13f8bb5063c0bc0b037ee7e640d4ae9",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "2b06cdf3e688b98fcc9945873b5d42792bd4eee0",
        "lessThan": "f833821e4b52ab6335d443ede5fb79c38e61d19a",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "2b06cdf3e688b98fcc9945873b5d42792bd4eee0",
        "lessThan": "f0ab9a71167bae308e05ab13b65e2007504a603f",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "2b06cdf3e688b98fcc9945873b5d42792bd4eee0",
        "lessThan": "8dd8929b71c4f06c614f8f54c2cc070453faae16",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "2b06cdf3e688b98fcc9945873b5d42792bd4eee0",
        "lessThan": "0ea8f06454012d9e7f9c6e6253df710949bf6294",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "2b06cdf3e688b98fcc9945873b5d42792bd4eee0",
        "lessThan": "96b678d08268b5f5c6fc99d4289d9b7e334fc683",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "2b06cdf3e688b98fcc9945873b5d42792bd4eee0",
        "lessThan": "c283e9ada7fcb7dd4b10592623086b2e6d2f9925",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "72f157be2f81910ae759bfe2e5c2256fc4625645",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "9e9fe58a92a46c6d154d2901735bf230d91b8507",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "adc1ec6cdc20d430aa01b86497220709b9149466",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "b54033eb1cfd77aba471269ddd804ed8d3e35dea",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "c9e82cb34c3c2ee895af01bc899c6ed0bc6eb04a",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "5eef9b51114fcc65651d671add52f267f91b9451",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "3.16.52",
        "lessThan": "3.17",
        "status": "affected",
        "versionType": "semver"
      },
      {
        "version": "4.4.163",
        "lessThan": "4.5",
        "status": "affected",
        "versionType": "semver"
      },
      {
        "version": "3.18.101",
        "lessThan": "3.19",
        "status": "affected",
        "versionType": "semver"
      },
      {
        "version": "4.1.52",
        "lessThan": "4.2",
        "status": "affected",
        "versionType": "semver"
      },
      {
        "version": "4.4.123",
        "lessThan": "4.5",
        "status": "affected",
        "versionType": "semver"
      },
      {
        "version": "4.9.89",
        "lessThan": "4.10",
        "status": "affected",
        "versionType": "semver"
      }
    ]
  },
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "affected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "net/xfrm/xfrm_state.c"
    ],
    "versions": [
      {
        "version": "4.14",
        "status": "affected"
      },
      {
        "version": "0",
        "lessThan": "4.14",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "5.10.267",
        "lessThanOrEqual": "5.10.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "5.15.218",
        "lessThanOrEqual": "5.15.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.1.185",
        "lessThanOrEqual": "6.1.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.6.154",
        "lessThanOrEqual": "6.6.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.12.106",
        "lessThanOrEqual": "6.12.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.18.47",
        "lessThanOrEqual": "6.18.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "7.1.6",
        "lessThanOrEqual": "7.1.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "7.2",
        "lessThanOrEqual": "*",
        "status": "unaffected",
        "versionType": "original_commit_for_fix"
      }
    ]
  }
]

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27 Aug 2026 13:18Current
5.4Medium risk
Vulners AI Score5.4
CVSS 3.17.8
EPSS0.00117
212