SB20260917104 - Use-after-free in Linux kernel scsi qla2xxx driver
Published: September 17, 2026
Security Bulletin ID
SB20260917104
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Information disclosure
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Use-after-free (CVE-ID: CVE-2026-89853)
CWE-ID: CWE-416 - Use After Free
CVSSv4: 0 [CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:N/SC:N/SI:N/SA:N]
The vulnerability allows a local user to trigger a use-after-free.
The vulnerability exists due to a race condition in qla2xxx FCE trace buffer handling when a debugfs FCE disable occurs during firmware dump processing. A local user can disable FCE tracing through debugfs during a firmware dump to trigger a use-after-free.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/41ef7edde27ac87d55ffc703da44e78aa8c2e896
- https://git.kernel.org/stable/c/423487f03e325b8665d20a2a3171fe012b1a4fa9
- https://git.kernel.org/stable/c/53298efcbbb0f0438366d45cb7ed7e6d93dd5531
- https://git.kernel.org/stable/c/6003e79148eca73d7cafb076f5be47e234d543d0
- https://git.kernel.org/stable/c/7bd308cd893e8cce023d03a40a2f0adccaff0175
- https://git.kernel.org/stable/c/8e7a26931b6111583cfeaf49c068f26524dc3af2
- https://git.kernel.org/stable/c/edc464a4fc96e2720d166e7cc7e7a6827b086760
- https://git.kernel.org/stable/c/ef9b89f6c92274c3670403fd06130ca25f685050