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CVE-2026-74564 netfilter: xt_hashlimit: validate hashtable supports XT_HASHLIMIT_RATE_MATCH

🗓️ 15 Aug 2026 12:28:06Reported by LinuxType 
cvelist
 cvelist
🔗 www.cve.org👁 33 Views

Linux kernel xt_hashlimit uninitialized burst field access via XT_HASHLIMIT_RATE_MATCH flag misuse.

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/xt_hashlimit.c"
    ],
    "versions": [
      {
        "version": "bea74641e3786d51dcf1175527cc1781420961c9",
        "lessThan": "402befce5854c195058cf4bab7c78ca286068a26",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "bea74641e3786d51dcf1175527cc1781420961c9",
        "lessThan": "dee686b5e7f21180538ff719867702f411c8eb5c",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "bea74641e3786d51dcf1175527cc1781420961c9",
        "lessThan": "f76ab783e7d8d33e33dd7dfa697297f70d57b0e8",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "bea74641e3786d51dcf1175527cc1781420961c9",
        "lessThan": "24683fea1f06bd3bd2707b99460e859bc6464c22",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "bea74641e3786d51dcf1175527cc1781420961c9",
        "lessThan": "32ec8d4aba2cf22e12bdc28df8c4bd833c195fc0",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "bea74641e3786d51dcf1175527cc1781420961c9",
        "lessThan": "d186f77d18bdfb252d401ff992ca3001a6a65a0f",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "bea74641e3786d51dcf1175527cc1781420961c9",
        "lessThan": "06a76334243ccd875a981aa8bb46c0f931ef1e3b",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "bea74641e3786d51dcf1175527cc1781420961c9",
        "lessThan": "305b63e1402267459fdabb183af4527f6799eebf",
        "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/xt_hashlimit.c"
    ],
    "versions": [
      {
        "version": "4.14",
        "status": "affected"
      },
      {
        "version": "0",
        "lessThan": "4.14",
        "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"
      }
    ]
  }
]

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