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CVE-2026-31496 netfilter: nf_conntrack_expect: skip expectations in other netns via proc

🗓️ 22 Apr 2026 13:54:18Reported by LinuxType 
cvelist
 cvelist
🔗 www.cve.org👁 27 Views

Resolved: Linux kernel netfilter nf_conntrack_expect now skips expectations not in this namespace via proc.

Related
Affected
Refs
[
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "unaffected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "net/netfilter/nf_conntrack_expect.c"
    ],
    "versions": [
      {
        "version": "9b03f38d0487f3908696242286d934c9b38f9d2a",
        "lessThan": "2028405ea6987b4448784e439413202cfe19f43f",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "9b03f38d0487f3908696242286d934c9b38f9d2a",
        "lessThan": "168145c87444619e3e649322bbe7719ecd00d411",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "9b03f38d0487f3908696242286d934c9b38f9d2a",
        "lessThan": "dcfcd95b3ae7683e8ae55c92284b3430ce614bc7",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "9b03f38d0487f3908696242286d934c9b38f9d2a",
        "lessThan": "9ca8c7452493d915f9bbf2f39331e6c583d07a23",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "9b03f38d0487f3908696242286d934c9b38f9d2a",
        "lessThan": "3265ad619987cb551edaf797ed056d80ac450225",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "9b03f38d0487f3908696242286d934c9b38f9d2a",
        "lessThan": "3db5647984de03d9cae0dcddb509b058351f0ee4",
        "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/netfilter/nf_conntrack_expect.c"
    ],
    "versions": [
      {
        "version": "2.6.28",
        "status": "affected"
      },
      {
        "version": "0",
        "lessThan": "2.6.28",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.1.168",
        "lessThanOrEqual": "6.1.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.6.131",
        "lessThanOrEqual": "6.6.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.12.80",
        "lessThanOrEqual": "6.12.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.18.21",
        "lessThanOrEqual": "6.18.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.19.11",
        "lessThanOrEqual": "6.19.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "7.0",
        "lessThanOrEqual": "*",
        "status": "unaffected",
        "versionType": "original_commit_for_fix"
      }
    ]
  }
]

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