NULL pointer dereference in Linux kernel - CVE-2026-98926
Published: October 23, 2026
Vulnerability identifier: #VU157580
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-2026-98926
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 Linux kernel AMD display driver's link_set_dpms_on() and link_set_dpms_off() functions when processing display power-management transitions without a stream sink. A local user can trigger affected operations while stream->sink is null to potentially cause a kernel crash and denial of service.
Affected software
Linux kernel
How to mitigate CVE-2026-98926
Install security update from vendor's repository.
Linux kernel - update to 7.0 rc3