{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "da0d12ff2b829a35e9921918e925d79497b82bef"
            },
            {
              "fixed": "2e47b91b9b4020fcc01def14d6b6556d66074cf4"
            },
            {
              "fixed": "0ca252720f0e38411cfec3431db9bb1aed0a412c"
            },
            {
              "fixed": "7d1658b066de30f4b23afc14814d22416a971e6e"
            },
            {
              "fixed": "7993d626983cc58fbde9607333cfd2d57725c197"
            },
            {
              "fixed": "7362ba0f9c96ac3ad6a2ca3995bd9fc9a28a8661"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "4.9.0"
            },
            {
              "fixed": "6.6.148"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.7.0"
            },
            {
              "fixed": "6.12.101"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.42"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "7.1.6"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/68xxx/CVE-2026-68357.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nwatchdog: pretimeout: Fix UAF in watchdog_unregister_governor()\n\nWhen a watchdog governor is unregistered, it updates existing watchdog\ndevices that were using this governor by falling back to `default_gov`.\n\nIf the governor being unregistered is currently set as `default_gov`,\nthe `default_gov` is never cleared.  This leads to 2 use-after-free\nissues:\n1. New watchdog devices registered after this point will inherit the\n   dangling `default_gov`.\n2. Existing watchdog devices using the unregistered governor will have\n   their `wdd-\u003egov` reassigned to the dangling `default_gov`.\n\nFix the UAF by clearing `default_gov` if it matches the governor being\nunregistered.",
  "id": "CVE-2026-68357",
  "modified": "2026-08-18T03:31:29.650509606Z",
  "published": "2026-08-10T12:03:34.241Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/0ca252720f0e38411cfec3431db9bb1aed0a412c"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/2e47b91b9b4020fcc01def14d6b6556d66074cf4"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/7362ba0f9c96ac3ad6a2ca3995bd9fc9a28a8661"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/7993d626983cc58fbde9607333cfd2d57725c197"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/7d1658b066de30f4b23afc14814d22416a971e6e"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/68xxx/CVE-2026-68357.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-68357"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.9.0",
  "summary": "watchdog: pretimeout: Fix UAF in watchdog_unregister_governor()"
}