CVE-2026-74581

🗓️ 21 Aug 2026 16:31:54Reported by LinuxType

Linux kernel IPv6 FIB6 rule suppress leaves stale rt6 pointer causing use-after-free in dst_release.

Reporter	Title	Published	Views	Family All 7
Circl	CVE-2026-74581	21 Aug 202623:15	–	circl
Cvelist	CVE-2026-74581 net: ipv6: clear suppressed fib6 rule result	21 Aug 202616:31	–	cvelist
Debian CVE	CVE-2026-74581	21 Aug 202616:31	–	debiancve
EUVD	EUVD-2026-64003	21 Aug 202616:31	–	euvd
NVD	CVE-2026-74581	21 Aug 202617:16	–	nvd
Positive Technologies	PT-2026-79402	21 Aug 202600:00	–	ptsecurity
RedhatCVE	CVE-2026-74581	21 Aug 202617:57	–	redhatcve

Vulners

CNA

Node

linux linux_kernelRange5.10.84–5.10.265

linux linux_kernelRange5.15.7–5.15.216

linux linux_kernelRange5.4.164–5.5

linux linux_kernelRange5.16–5.10.265

linux linux_kernelRange5.11.0–5.15.216

linux linux_kernelRange5.16.0–6.1.183

linux linux_kernelRange6.2.0–6.6.151

linux linux_kernelRange6.7.0–6.12.103

linux linux_kernelRange6.13.0–6.18.44

linux linux_kernelRange6.19.0–7.1.8

linux linux_kernelRange7.2.0≥

[
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "unaffected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "net/ipv6/fib6_rules.c"
    ],
    "versions": [
      {
        "version": "209d35ee34e25f9668c404350a1c86d914c54ffa",
        "lessThan": "90c57310e266eb94e4a80d6b15a9ca131d2e82cb",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "8ef8a76a340ebdb2c2eea3f6fb0ebbed09a16383",
        "lessThan": "5d29b286c9de0b309e94b9ed083aa1a2f429434f",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "cdef485217d30382f3bf6448c54b4401648fe3f1",
        "lessThan": "354db6243eca59e9d187ffbf8b7955b044ce84dc",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "cdef485217d30382f3bf6448c54b4401648fe3f1",
        "lessThan": "6d98c70fe0ba8c7708bfd5b2a5174d2086775daa",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "cdef485217d30382f3bf6448c54b4401648fe3f1",
        "lessThan": "9bad152c42b37499162367fe47867411e62fffa3",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "cdef485217d30382f3bf6448c54b4401648fe3f1",
        "lessThan": "dc3ab04220667f254f4348572b2a0b3febff89fb",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "cdef485217d30382f3bf6448c54b4401648fe3f1",
        "lessThan": "a341c091ca0bfae377747b1b59a3bd8ebe18a937",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "cdef485217d30382f3bf6448c54b4401648fe3f1",
        "lessThan": "6aea62e433fe1b586202a5fee8b5807ce635e1d7",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "ee38eb8cf9a7323884c2b8e0adbbeb2192d31e29",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "5.10.84",
        "lessThan": "5.10.265",
        "status": "affected",
        "versionType": "semver"
      },
      {
        "version": "5.15.7",
        "lessThan": "5.15.216",
        "status": "affected",
        "versionType": "semver"
      },
      {
        "version": "5.4.164",
        "lessThan": "5.5",
        "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/ipv6/fib6_rules.c"
    ],
    "versions": [
      {
        "version": "5.16",
        "status": "affected"
      },
      {
        "version": "0",
        "lessThan": "5.16",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "5.10.265",
        "lessThanOrEqual": "5.10.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "5.15.216",
        "lessThanOrEqual": "5.15.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.1.183",
        "lessThanOrEqual": "6.1.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.6.151",
        "lessThanOrEqual": "6.6.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.12.103",
        "lessThanOrEqual": "6.12.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.18.44",
        "lessThanOrEqual": "6.18.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "7.1.8",
        "lessThanOrEqual": "7.1.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "7.2",
        "lessThanOrEqual": "*",
        "status": "unaffected",
        "versionType": "original_commit_for_fix"
      }
    ]
  }
]

Source	Link
git	www.git.kernel.org/stable/c/5d29b286c9de0b309e94b9ed083aa1a2f429434f
git	www.git.kernel.org/stable/c/90c57310e266eb94e4a80d6b15a9ca131d2e82cb
git	www.git.kernel.org/stable/c/9bad152c42b37499162367fe47867411e62fffa3
git	www.git.kernel.org/stable/c/dc3ab04220667f254f4348572b2a0b3febff89fb
git	www.git.kernel.org/stable/c/6aea62e433fe1b586202a5fee8b5807ce635e1d7
git	www.git.kernel.org/stable/c/a341c091ca0bfae377747b1b59a3bd8ebe18a937
git	www.git.kernel.org/stable/c/6d98c70fe0ba8c7708bfd5b2a5174d2086775daa
git	www.git.kernel.org/stable/c/354db6243eca59e9d187ffbf8b7955b044ce84dc

21 Aug 2026 17:16Current

5.3Medium risk

Vulners AI Score5.3