What is CVE-2026-89855?

CVE-2026-89855 is a unscored severity Linux kernel vulnerability, affecting Linux kernel versions from 3.12 onward and patched in 5.10.270, 5.15.221, 6.1.188 and others. CVE-2026-89855 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2026-89855?

CVE-2026-89855 has a CVSS score of pending NVD analysis out of 10, rated awaiting scoring severity.

Is there a patch available for CVE-2026-89855?

Yes, CVE-2026-89855 has been patched. Fixed versions include 5.10.270, 5.15.221, 6.1.188 and others. If you are running Linux kernel 3.12 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2026-89855 actively exploited?

CVE-2026-89855 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2026-89855

In the Linux kernel, the following vulnerability has been resolved: scsi: qla2xxx: Serialize flash version read in reset handler The "update cache versions without reset" sysfs reset operation (0x20261) calls get_flash_version(), which reads hardware flash registers, without holding ha->optrom_mutex. The VPD update path serializes the same call under optrom_mutex, so this reset path can interleave its flash register accesses with a concurrent VPD or optrom flash operation and corrupt the reads. Hold ha->optrom_mutex across the get_flash_version() call to match the VPD update path.

Package Linux Kernel

Published 2026-09-16

Last modified 2026-09-16

Patch available

Yes

Affected versions

Linux kernel versions 3.12 and later are affected. Fixed in 5.10.270, 5.15.221, 6.1.188, 6.6.157, 6.12.110, 6.18.51, 7.2.5, 7.3-rc1 and their respective stable series.

Affected from

≥ 3.12

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 ✓ 6.12.110 6.12.x ✓ 6.18.51 6.18.x ✓ 7.2.5 7.2.x ✓ 7.3-rc1

References

8 total

Showing 5 of 8 references View all on NVD

Frequently asked questions

What is CVE-2026-89855?

CVE-2026-89855 is a unscored severity Linux kernel vulnerability . It affects Linux kernel versions from 3.12 onward and has been patched in 5.10.270, 5.15.221, 6.1.188 and others. CVE-2026-89855 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
Is there a patch available for CVE-2026-89855?

Yes. CVE-2026-89855 has been patched. Fixed versions include 5.10.270, 5.15.221, 6.1.188 and others. If you are running Linux kernel 3.12 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2026-89855 actively exploited?

No. CVE-2026-89855 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.