CVE-2026-89855

Description

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.

Is your site exposed to CVE-2026-89855?

Run a free security scan — no signup, results in seconds.

EPSS — Exploit Prediction

0.0021

Probability of exploitation

0.11%

Percentile rank

EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.

References

Other References

https://git.kernel.org/stable/c/31bf2714abbb0aa5a8a03d15038f8920e1c74b21 https://git.kernel.org/stable/c/33735490789e5417851752974c0b1d23125559cd https://git.kernel.org/stable/c/75460967619eda720c9a03767729157ffd171d8c https://git.kernel.org/stable/c/8d116137119371349fb09685fe05413d8fc92efe https://git.kernel.org/stable/c/9cef42a073a0bdeee7fb1b47221cda222d330d2a https://git.kernel.org/stable/c/ae979c549cba684e67b6c047140f3a8d2439b298 https://git.kernel.org/stable/c/f1fc052f2a5890ea6dba80d50254dd6258b13386 https://git.kernel.org/stable/c/f606ed93de0c4f1e7e3618779e9fad731455314a

Frequently Asked Questions

What is 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.

How do I check if I'm vulnerable to CVE-2026-89855? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.