Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: ALSA: mtpav: shut down output timer before card teardown snd_mtpav_output_timer() rearms chip->timer while holding chip->spinlock and accesses the card-private mtpav state. snd_mtpav_free() currently takes the same lock and calls timer_delete() when the timer is active. This only removes a pending timer; it does not wait for a callback that is already running and does not prevent the callback from rearming the timer. A callback running on another CPU can therefore continue after snd_mtpav_free() releases the lock and access the card-private state while the card is being torn down. It can also rearm the timer after timer_delete() has returned. Call timer_shutdown_sync() without holding chip->spinlock. This waits for any running callback to finish and prevents further rearming before the card-private mtpav state is released.
References
- https://git.kernel.org/stable/c/1e16e82581521a2fe20eda29bdc9e75286f7c950
- https://git.kernel.org/stable/c/392c985c6b03dfdf4904c0d464f18735ca3c4df8
- https://git.kernel.org/stable/c/c73cb5b7c159246dd572277c668851a56e516019
FAQ
What is CVE-2026-90116?
CVE-2026-90116 is a documented vulnerability. In the Linux kernel, the following vulnerability has been resolved: ALSA: mtpav: shut down output timer before card teardown snd_mtpav_output_timer() rearms chip->timer while holding chip->spinlock ...
How severe is CVE-2026-90116?
CVSS scoring is not yet available for CVE-2026-90116. Check NVD for updates.
Is there a patch for CVE-2026-90116?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.