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CVE-2026-31424 netfilter: x_tables: restrict xt_check_match/xt_check_target extensions for NFPROTO_ARP

🗓️ 13 Apr 2026 13:40:27Reported by LinuxType 
cvelist
 cvelist
🔗 www.cve.org👁 24 Views

CVE-2026-31424 fixes x_tables ARP extension misuse by restricting ARP matches and targets.

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/x_tables.c"
    ],
    "versions": [
      {
        "version": "9291747f118d6404e509747b85ff5f6dfec368d2",
        "lessThan": "80e3c75f71c3ea1e62fcb032382de13e00a68f8b",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "9291747f118d6404e509747b85ff5f6dfec368d2",
        "lessThan": "d9a0af9e43416aa50c0595e15fa01365a1c72c49",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "9291747f118d6404e509747b85ff5f6dfec368d2",
        "lessThan": "1cd6313c8644bfebbd813a05da9daa21b09dd68c",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "9291747f118d6404e509747b85ff5f6dfec368d2",
        "lessThan": "f00ac65c90ea475719e08d629e2e26c8b4e6999b",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "9291747f118d6404e509747b85ff5f6dfec368d2",
        "lessThan": "e7e1b6bcb389c8708003d40613a59ff2496f6b1f",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "9291747f118d6404e509747b85ff5f6dfec368d2",
        "lessThan": "dc3e27dd7d76e21106b8f9bbdc31f5da74a89014",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "9291747f118d6404e509747b85ff5f6dfec368d2",
        "lessThan": "3e79374b03bf9a2f282f0eb1d0ac3776f7e0f28a",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "9291747f118d6404e509747b85ff5f6dfec368d2",
        "lessThan": "3d5d488f11776738deab9da336038add95d342d1",
        "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/x_tables.c"
    ],
    "versions": [
      {
        "version": "2.6.39",
        "status": "affected"
      },
      {
        "version": "0",
        "lessThan": "2.6.39",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "5.10.253",
        "lessThanOrEqual": "5.10.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "5.15.203",
        "lessThanOrEqual": "5.15.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.1.168",
        "lessThanOrEqual": "6.1.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.6.134",
        "lessThanOrEqual": "6.6.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.12.81",
        "lessThanOrEqual": "6.12.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.18.22",
        "lessThanOrEqual": "6.18.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.19.12",
        "lessThanOrEqual": "6.19.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "7.0",
        "lessThanOrEqual": "*",
        "status": "unaffected",
        "versionType": "original_commit_for_fix"
      }
    ]
  }
]

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