Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: watchdog: at91sam9_wdt: prevent timer rearm during teardown at91_ping() rearms the watchdog timer from its callback. timer_delete() neither waits for a running callback nor prevents it from rearming the timer, so probe failure or driver removal can leave the timer accessing the devm-allocated at91wdt after it has been freed. Use timer_shutdown_sync() on both teardown paths. It waits for a running callback and rejects any attempt by the callback to rearm the timer.
References
- https://git.kernel.org/stable/c/29fe74c9aa69d78c1c6a3930f1d9fc5db71a6eed
- https://git.kernel.org/stable/c/8444d66aa6b6e7fe0a26fa1a00a11cb4d0523783
- https://git.kernel.org/stable/c/b7949b0a7d998013b7ec8617a0ef5b07cca80be4
FAQ
What is CVE-2026-74687?
CVE-2026-74687 is a documented vulnerability. In the Linux kernel, the following vulnerability has been resolved: watchdog: at91sam9_wdt: prevent timer rearm during teardown at91_ping() rearms the watchdog timer from its callback. timer_delete(...
How severe is CVE-2026-74687?
CVSS scoring is not yet available for CVE-2026-74687. Check NVD for updates.
Is there a patch for CVE-2026-74687?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.