CVE-2026-68357: Linux

Описание

Оригинално описание

In the Linux kernel, the following vulnerability has been resolved: watchdog: pretimeout: Fix UAF in watchdog_unregister_governor() When a watchdog governor is unregistered, it updates existing watchdog devices that were using this governor by falling back to `default_gov`. If the governor being unregistered is currently set as `default_gov`, the `default_gov` is never cleared. This leads to 2 use-after-free issues: 1. New watchdog devices registered after this point will inherit the dangling `default_gov`. 2. Existing watchdog devices using the unregistered governor will have their `wdd->gov` reassigned to the dangling `default_gov`. Fix the UAF by clearing `default_gov` if it matches the governor being unregistered.

Засегнати продукти

• Linux Linux: da0d12ff2b829a35e9921918e925d79497b82bef преди b9ae33faa96bdec6bc60e4c5f8f53786182e4207; da0d12ff2b829a35e9921918e925d79497b82bef преди 472ec1e34ff0bb26379805cae808f658cce58c35; da0d12ff2b829a35e9921918e925d79497b82bef преди 7a2ee3ec6f208307eca1119a343c7b5d39c03708; da0d12ff2b829a35e9921918e925d79497b82bef преди 2e47b91b9b4020fcc01def14d6b6556d66074cf4; da0d12ff2b829a35e9921918e925d79497b82bef преди 0ca252720f0e38411cfec3431db9bb1aed0a412c; da0d12ff2b829a35e9921918e925d79497b82bef преди 7d1658b066de30f4b23afc14814d22416a971e6e; da0d12ff2b829a35e9921918e925d79497b82bef преди 7993d626983cc58fbde9607333cfd2d57725c197; da0d12ff2b829a35e9921918e925d79497b82bef преди 7362ba0f9c96ac3ad6a2ca3995bd9fc9a28a8661
• Linux Linux: 4.9; преди 4.9; 5.10.265 до 5.10.*; 5.15.216 до 5.15.*; 6.1.183 до 6.1.*; 6.6.148 до 6.6.*; 6.12.101 до 6.12.*; 6.18.42 до 6.18.*; 7.1.6 до 7.1.*; от 7.2 нататък

История

Други уязвимости в Linux Linux

• 8.1CVE-2026-99270
• 7.8CVE-2026-99269
• CVE-2026-99268
• CVE-2026-99266
• CVE-2026-99267

Първоизточници

• https://www.cve.org/CVERecord?id=CVE-2026-68357
• https://nvd.nist.gov/vuln/detail/CVE-2026-68357
• https://git.kernel.org/stable/c/b9ae33faa96bdec6bc60e4c5f8f53786182e4207
• https://git.kernel.org/stable/c/472ec1e34ff0bb26379805cae808f658cce58c35
• https://git.kernel.org/stable/c/7a2ee3ec6f208307eca1119a343c7b5d39c03708
• https://git.kernel.org/stable/c/2e47b91b9b4020fcc01def14d6b6556d66074cf4
• https://git.kernel.org/stable/c/0ca252720f0e38411cfec3431db9bb1aed0a412c
• https://git.kernel.org/stable/c/7d1658b066de30f4b23afc14814d22416a971e6e
• https://git.kernel.org/stable/c/7993d626983cc58fbde9607333cfd2d57725c197
• https://git.kernel.org/stable/c/7362ba0f9c96ac3ad6a2ca3995bd9fc9a28a8661