NULL pointer dereference in Linux kernel - CVE-2026-89591
Published: September 12, 2026
Vulnerability identifier: #VU149216
CSH Severity: Low
CVSS v4: 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]
CVE-ID: CVE-2026-89591
CWE-ID: CWE-476
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local user to cause a denial of service.
The vulnerability exists due to a null pointer dereference in rocket_job_cleanup() when cleaning up a job after an allocation error before its domain is assigned. A local user can submit a job that encounters an allocation error to cause a denial of service.
Affected software
Linux kernel
How to mitigate CVE-2026-89591
Install security update from vendor's repository.