What’s Vulnerable › Vulnerabilities

CVE-2026-80967: ALSA: pcxhr: initialize mutexes before requesting threaded IRQ

• Severity: high (CVSS 8.4 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-09-11 · updated 2026-10-30

Description

In the Linux kernel, the following vulnerability has been resolved: ALSA: pcxhr: initialize mutexes before requesting threaded IRQ pcxhr_probe() requests pcxhr_threaded_irq() before initializing mgr->lock, even though the threaded handler takes that mutex. Initialize the manager locks before request_threaded_irq() so an early interrupt cannot run against uninitialized mutex state during probe.

Affected products

• Linux: 3.18 — fixed in 7.3

How to fix

Upgrade to a fixed version: Linux 7.3. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/039602d6ddb1febbb0561b30dab04461f78a1319
• https://git.kernel.org/stable/c/20a0f80f67a1495a57e5a3ba0fa172a0f919691d
• https://git.kernel.org/stable/c/6c97817e20598e5473094e0e38d1f51f1cf4dfff
• https://git.kernel.org/stable/c/7cf280fbef5db6310e1b32074c8c34d1ba459796
• https://git.kernel.org/stable/c/7ef9ad82d95dd3c74570d80a689a0570fbc7539e
• https://git.kernel.org/stable/c/a5f405adb0229c9cf64eb3d695c333c92e3d3d4f
• https://git.kernel.org/stable/c/c069b3cfd753d6688ea0271c43553631ab38ce10
• https://git.kernel.org/stable/c/ede25b7fea0d7487ee8528bf35dc7b9a1cbcd814

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