What is CVE-2026-80965?

CVE-2026-80965 is a unscored severity Linux kernel vulnerability, affecting Linux kernel versions from 2.6.16 onward and patched in 5.10.270, 5.15.221, 6.1.188 and others. CVE-2026-80965 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2026-80965?

CVE-2026-80965 has a CVSS score of pending NVD analysis out of 10, rated awaiting scoring severity.

Is there a patch available for CVE-2026-80965?

Yes, CVE-2026-80965 has been patched. Fixed versions include 5.10.270, 5.15.221, 6.1.188 and others. If you are running Linux kernel 2.6.16 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2026-80965 actively exploited?

CVE-2026-80965 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2026-80965

In the Linux kernel, the following vulnerability has been resolved: ALSA: serial-u16550: Check card index validity at probe serial-u16550 driver blindly trusts that the given devptr->id value is within the proper card index range at probe. It's OK for the devices the driver itself creates at the module probe time, but if the device is bound manually via sysfs interface, this could be -1 as "none", and this leads 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.

Package Linux Kernel

Published 2026-09-11

Last modified 2026-09-14

Patch available

Yes

Affected versions

Linux kernel versions 2.6.16 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.

Affected from

≥ 2.6.16

Fixed in

✓ 5.10.270 5.10.x ✓ 5.15.221 5.15.x ✓ 6.1.188 6.1.x ✓ 6.6.157 6.6.x ✓ 6.12.109 6.12.x ✓ 6.18.50 6.18.x ✓ 7.2.4 7.2.x ✓ 7.3-rc1

References

8 total

Showing 5 of 8 references View all on NVD

Frequently asked questions

What is CVE-2026-80965?

CVE-2026-80965 is a unscored severity Linux kernel vulnerability . It affects Linux kernel versions from 2.6.16 onward and has been patched in 5.10.270, 5.15.221, 6.1.188 and others. CVE-2026-80965 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
Is there a patch available for CVE-2026-80965?

Yes. CVE-2026-80965 has been patched. Fixed versions include 5.10.270, 5.15.221, 6.1.188 and others. If you are running Linux kernel 2.6.16 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2026-80965 actively exploited?

No. CVE-2026-80965 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.