NULL pointer dereference in Linux kernel - CVE-2026-80577
Published: August 27, 2026
Vulnerability identifier: #VU145914
CSH Severity: Low
CVSS v4: 6.8 [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]
CVE-ID: CVE-2026-80577
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 panthor firmware section handling in panthor_fw_load_section_entry() and related reload and unplug paths when processing zero-sized firmware sections. A local user can provide a crafted firmware image containing an empty section entry to cause a denial of service.
Zero-sized firmware sections are valid inputs, and the issue is triggered when such an entry is left in the firmware section list with an unset memory pointer.
Affected software
Linux kernel
How to mitigate CVE-2026-80577
Install security update from vendor's repository.
Linux kernel - update to 7.0 rc3