Use of uninitialized resource in Linux kernel - CVE-2026-89865
Published: September 17, 2026
Vulnerability identifier: #VU150422
CSH Severity: Low
CVSS v4: 4.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-89865
CWE-ID: CWE-908
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local user to disclose sensitive information and modify device flash contents.
The vulnerability exists due to use of uninitialized memory in the qla2xxx FRU and I2C BSG handlers when processing a user-controlled payload that overrides the transfer length. A local user can send a crafted BSG request to disclose sensitive information and modify device flash contents.
Affected software
Linux kernel
How to mitigate CVE-2026-89865
Install security update from vendor's repository.
External References
- https://git.kernel.org/stable/c/09703bc7c0be3a7a155b0ff5f21f6765ba3f519c
- https://git.kernel.org/stable/c/581590f560b74399151b3cbc88574424c2f3d2dc
- https://git.kernel.org/stable/c/84bde5ce4038d9ad811e5c994305bbfcbd7a9f79
- https://git.kernel.org/stable/c/97c45c75f5cdec96b1a4fba8b1d55d0dd01af1e8
- https://git.kernel.org/stable/c/a476377a66897549dd49bee319f4df66623417b7
- https://git.kernel.org/stable/c/a5501c42256235523c4dddf799f032dfbf4f4c77
- https://git.kernel.org/stable/c/b157256c28086c434afd70cc78bf9b4d8caf1276
- https://git.kernel.org/stable/c/b47d4a1547d9ef21b2e9d1a739fe2204d4be05dc