{"cve":"CVE-2026-68357","nvd":{"published":"2026-08-10T13:20:28.160","modified":"2026-08-19T17:20:45.310","status":"Received","description":"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->gov` reassigned to the dangling `default_gov`.\n\nFix the UAF by clearing `default_gov` if it matches the governor being\nunregistered.","cvss_v4":null,"cvss_v3":null,"cwes":[],"references":["https://git.kernel.org/stable/c/0ca252720f0e38411cfec3431db9bb1aed0a412c","https://git.kernel.org/stable/c/2e47b91b9b4020fcc01def14d6b6556d66074cf4","https://git.kernel.org/stable/c/472ec1e34ff0bb26379805cae808f658cce58c35","https://git.kernel.org/stable/c/7362ba0f9c96ac3ad6a2ca3995bd9fc9a28a8661","https://git.kernel.org/stable/c/7993d626983cc58fbde9607333cfd2d57725c197"],"products":[],"source":"nvd","synced_at":"2026-10-19T22:47:54.990491175+00:00"},"epss":{"cve":"CVE-2026-68357","score":0.00177,"percentile":0.07219,"date":"2026-10-31"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}