CVE-2026-74687
CVE-2026-74687: 1 tracked advisory record across Red Hat. Compare vendor sources.
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Red Hat
1 advisory- Advisory severityMedium5.5
Medium [CVE-2026-74687] prevent timer rearm during teardown
CVE-2026-74687Source published Source updated
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. However, the `timer_delete()` function does not prevent this, resulting in a use-after-free vulnerability where the timer attempts to access memory that has already been released. This flaw could be triggered by a local attacker or specific system conditions, potentially leading to system instability or a denial of service. Red Hat severity: Moderate…
- Affected products in this advisory
- No product details extracted. Check the source bulletin.
- Source-reported affected versions
- Affected-version details not available in this record.
- Source-reported fixed versions
- No fixed-version detail extracted. This does not mean no fix exists.
- Mitigation guidance
- No mitigation guidance extracted; consult the source.
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