Use of uninitialized resource in Linux kernel - CVE-2026-89859
Published: September 17, 2026
Vulnerability identifier: #VU150432
CSH Severity: Low
CVSS v4: 4.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-89859
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.
The vulnerability exists due to use of uninitialized memory in qla2x00_do_dport_diagnostics() when handling dport diagnostic requests. A local user can submit a dport diagnostic request with a partial payload to disclose sensitive information.
Affected software
Linux kernel
How to mitigate CVE-2026-89859
Install security update from vendor's repository.