SB20260917120 - Time-of-check Time-of-use (TOCTOU) Race Condition in Linux kernel scsi qla2xxx driver

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Main Vulnerability Database SB20260917120

SB20260917120 - Time-of-check Time-of-use (TOCTOU) Race Condition in Linux kernel scsi qla2xxx driver

Published: September 17, 2026

Security Bulletin ID SB20260917120
CSH Severity
Low
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Local access
Highest impact Denial of service

Breakdown by Severity

Low 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 vulnerability.


1) Time-of-check Time-of-use (TOCTOU) Race Condition (CVE-ID: CVE-2026-89845)

CWE-ID: CWE-367 - Time-of-check Time-of-use (TOCTOU) Race Condition

CVSSv4: 5.7 [CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]


The vulnerability allows a local user to cause a denial of service.

The vulnerability exists due to a time-of-check to time-of-use race condition in qla2x00_error_entry() when handling error entries during request-queue teardown. A local user can trigger processing of an error entry while the request queue is being torn down to cause a denial of service.

The response-queue interrupt can remain registered while request queues are being torn down.


Remediation

Install update from vendor's website.

References