CVE-2026-89855
scsi: qla2xxx: Serialize flash version read in reset handler
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.
INFO
Published Date :
Sept. 16, 2026, 11:16 a.m.
Last Modified :
Sept. 16, 2026, 11:16 a.m.
Remotely Exploit :
No
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Solution
- Hold optrom_mutex across get_flash_version() call.
- Synchronize access to hardware flash registers.
- Update the Linux kernel to the patched version.
- Test the reset and VPD update paths.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-89855.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-89855 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-89855
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-89855 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-89855 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
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New CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Sep. 16, 2026
Action Type Old Value New Value Added 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. Added Affected New affected value received. <a href="https://github.com/CVEProject/cvelistV5/blob/main/cves/2026/89xxx/CVE-2026-89855.json">CVE-2026-89855</a> Added Reference https://git.kernel.org/stable/c/31bf2714abbb0aa5a8a03d15038f8920e1c74b21 Added Reference https://git.kernel.org/stable/c/33735490789e5417851752974c0b1d23125559cd Added Reference https://git.kernel.org/stable/c/75460967619eda720c9a03767729157ffd171d8c Added Reference https://git.kernel.org/stable/c/8d116137119371349fb09685fe05413d8fc92efe Added Reference https://git.kernel.org/stable/c/9cef42a073a0bdeee7fb1b47221cda222d330d2a Added Reference https://git.kernel.org/stable/c/ae979c549cba684e67b6c047140f3a8d2439b298 Added Reference https://git.kernel.org/stable/c/f1fc052f2a5890ea6dba80d50254dd6258b13386 Added Reference https://git.kernel.org/stable/c/f606ed93de0c4f1e7e3618779e9fad731455314a