CVE-2026-90116ALSA: mtpav: shut down output timer before card teardown
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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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.
- CVSS
- Not yet scored
- Weakness (CWE)
- Not given
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Linux
- NVD analysis
- Received
- Record last updated
- Sep 17, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Linux Linux linux:linux (from the name) | from 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before 392c985c6b03dfdf4904c0d464f18735ca3c4df8; from 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before 1e16e82581521a2fe20eda29bdc9e75286f7c950; from 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before c73cb5b7c159246dd572277c668851a56e516019 | CNA record |
References
- https://git.kernel.org/stable/c/392c985c6b03dfdf4904c0d464f18735ca3c4df8
- https://git.kernel.org/stable/c/1e16e82581521a2fe20eda29bdc9e75286f7c950
- https://git.kernel.org/stable/c/c73cb5b7c159246dd572277c668851a56e516019
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.