CVE-2026-89855
Published Sep 16, 2026
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.
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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.