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CVE-2026-68357 watchdog: pretimeout: Fix UAF in watchdog_unregister_governor()

🗓️ 10 Aug 2026 12:03:34Reported by LinuxType 
cvelist
 cvelist
🔗 www.cve.org👁 32 Views

Watchdog pretimeout: clear the default governor when unregistering its governor to prevent use after free.

Related
Affected
Refs
[
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "unaffected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "drivers/watchdog/watchdog_pretimeout.c"
    ],
    "versions": [
      {
        "version": "da0d12ff2b829a35e9921918e925d79497b82bef",
        "lessThan": "b9ae33faa96bdec6bc60e4c5f8f53786182e4207",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "da0d12ff2b829a35e9921918e925d79497b82bef",
        "lessThan": "472ec1e34ff0bb26379805cae808f658cce58c35",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "da0d12ff2b829a35e9921918e925d79497b82bef",
        "lessThan": "7a2ee3ec6f208307eca1119a343c7b5d39c03708",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "da0d12ff2b829a35e9921918e925d79497b82bef",
        "lessThan": "2e47b91b9b4020fcc01def14d6b6556d66074cf4",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "da0d12ff2b829a35e9921918e925d79497b82bef",
        "lessThan": "0ca252720f0e38411cfec3431db9bb1aed0a412c",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "da0d12ff2b829a35e9921918e925d79497b82bef",
        "lessThan": "7d1658b066de30f4b23afc14814d22416a971e6e",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "da0d12ff2b829a35e9921918e925d79497b82bef",
        "lessThan": "7993d626983cc58fbde9607333cfd2d57725c197",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "da0d12ff2b829a35e9921918e925d79497b82bef",
        "lessThan": "7362ba0f9c96ac3ad6a2ca3995bd9fc9a28a8661",
        "status": "affected",
        "versionType": "git"
      }
    ]
  },
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "affected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "drivers/watchdog/watchdog_pretimeout.c"
    ],
    "versions": [
      {
        "version": "4.9",
        "status": "affected"
      },
      {
        "version": "0",
        "lessThan": "4.9",
        "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": "6.6.148",
        "lessThanOrEqual": "6.6.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.12.101",
        "lessThanOrEqual": "6.12.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.18.42",
        "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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