CVE-2026-80966
In the Linux kernel, the following vulnerability has been resolved: ALSA: portman2x4: Check card index validity at probe Although portman2x4 driver has a check of the given devptr->id value, it doesn't check for a negative id, which is often given as "none" or such value when bound via sysfs. This may lead to OOB access for index[] and other parameters. Add a sanity check for the card index and warn/correct it if it's a value out of the range.
Affected versions
Linux kernel versions
2.6.21
and later are affected. Fixed in
5.10.270,
5.15.221,
6.1.188,
6.6.157,
6.12.109,
6.18.50,
7.2.4,
7.3-rc1
and their respective stable series.
References
8 totalFrequently asked questions
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What is CVE-2026-80966?
CVE-2026-80966 is a unscored severity Linux kernel vulnerability . It affects Linux kernel versions from 2.6.21 onward and has been patched in 5.10.270, 5.15.221, 6.1.188 and others. CVE-2026-80966 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
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Is there a patch available for CVE-2026-80966?
Yes. CVE-2026-80966 has been patched. Fixed versions include 5.10.270, 5.15.221, 6.1.188 and others. If you are running Linux kernel 2.6.21 or later up to the fix versions, apply the relevant patch for your kernel branch.
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Is CVE-2026-80966 actively exploited?
No. CVE-2026-80966 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.