NULL pointer dereference in Linux kernel - CVE-2026-46278
Published: June 10, 2026
Vulnerability identifier: #VU134254
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2026-46278
CWE-ID: CWE-476
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vendor: Linux Foundation
Affected software:
Linux kernel
Linux kernel
Detailed vulnerability description
The vulnerability allows a local user to cause a denial of service.
The vulnerability exists due to a NULL pointer dereference in the pvr_fw_trace_mask_set debugfs handler when handling writes to the trace_mask debugfs entry. A local user can write to the debugfs file to cause a denial of service.
The issue is reachable through the powervr driver's debugfs interface.
How to mitigate CVE-2026-46278
Install security update from vendor's repository.