ALSA: mtpav: shut down output timer before card teardown
Key facts
- Attack vector
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- Privileges required
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- User interaction
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- Attack complexity
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- Impact type
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- Confidentiality · integrity · availability
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- Fix status
- Partial Red Hat: 7 without a fix
No CVSS vector from any source. Fix status from CNA and Red Hat.
Summary
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.
Why it matters now
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
Remediation
- Fix · CNA Linux (Linux) Fixed in 6.1.191, 6.6.160, 6.12.114, 6.18.52, 7.2.6, 7.3
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux 10 | Affected | No fix yet: Fix deferred |
| Red Hat Enterprise Linux 6 | Affected | No fix planned: Out of support scope |
| Red Hat Enterprise Linux 7 | Affected | No fix yet: Fix deferred |
| Red Hat Enterprise Linux 8 | Affected | No fix yet: Fix deferred |
| Red Hat Enterprise Linux 9 | Affected | No fix yet: Fix deferred |
| Red Hat OpenShift Container Platform 4 | Affected | No fix yet: Fix deferred |
| Red Hat OpenShift Container Platform 5 | Affected | No fix yet: Fix deferred |
Timeline
- 2026-10-02 Threatist record created from CVE-2026-90116
- 2026-10-03 Alias added: GHSA-f6xw-5hrw-vj32
- 2026-10-13 Affected versions changed · Red Hat
- 2026-10-13 CVSS score added · Red Hat
- 2026-10-19 Fix available: Linux/[email protected] · CNA
- 2026-10-21 Fix available: Linux/[email protected], Linux/[email protected], Linux/Linux@793163e134028e7136c9dd9e30f7f656de1eabba +1 · CNA
- 2026-10-21 2 new references · CNA
- 2026-10-30 Fix available: Linux/[email protected], Linux/Linux@a9435a1f14a6f9520452617343ea59bb35ba9e79 · CNA
- 2026-10-30 1 new reference · CNA
- 2026-11-06 Affected versions changed · Red Hat
References
Other 6
- https://git.kernel.org/stable/c/a9435a1f14a6f9520452617343ea59bb35ba9e79
- https://git.kernel.org/stable/c/793163e134028e7136c9dd9e30f7f656de1eabba
- https://git.kernel.org/stable/c/de75857ce374671712e1d9528844e3c0543dcef6
- https://git.kernel.org/stable/c/392c985c6b03dfdf4904c0d464f18735ca3c4df8
- https://git.kernel.org/stable/c/1e16e82581521a2fe20eda29bdc9e75286f7c950
- https://git.kernel.org/stable/c/c73cb5b7c159246dd572277c668851a56e516019
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Sources
- CVE-2026-90116 · CVE Program
- CVE-2026-90116 · NVD
- FIRST EPSS
- GHSA-f6xw-5hrw-vj32 · GitHub Advisory Database · CC BY 4.0
- CVE-2026-90116 · Red Hat security data · CC BY 4.0
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