CVE-2026-74687
watchdog: at91sam9_wdt: prevent timer rearm during teardown
CVSS Score
7.8
EPSS Score
0.2%
EPSS Percentile
6th
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.
| Vendor | linux |
| Product | linux |
| Ecosystems | |
| Industries | Technology |
| Published | Aug 22, 2026 |
| Last Updated | Aug 25, 2026 |
Stay Ahead of the Next One
Get instant alerts for linux linux
Be the first to know when new high vulnerabilities affecting linux linux are published — delivered to Slack, Telegram or Discord.
Get Free Alerts →
Free · No credit card · 60 sec setup
CVSS v3 Breakdown
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
Affected Versions
Linux / Linux
5161b31dc39a6d6dadc95f298de48a725b73ada8 < 29fe74c9aa69d78c1c6a3930f1d9fc5db71a6eed 5161b31dc39a6d6dadc95f298de48a725b73ada8 < b7949b0a7d998013b7ec8617a0ef5b07cca80be4 5161b31dc39a6d6dadc95f298de48a725b73ada8 < 8444d66aa6b6e7fe0a26fa1a00a11cb4d0523783
Linux / Linux
3.14