NULL pointer dereference in Linux kernel - CVE-2026-92479
Published: September 18, 2026
Vulnerability identifier: #VU151042
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-2026-92479
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 the UFS completion handler ufshcd_compl_one_cqe() when processing an invalid completion tag with no associated command. A local user can trigger processing of an invalid completion tag to cause a denial of service.
The issue occurs in the single-doorbell completion path.
Affected software
Linux kernel
How to mitigate CVE-2026-92479
Install security update from vendor's repository.