SB2026050929 - NULL pointer dereference in Linux kernel amd amdgpu driver

Description

This security bulletin contains information about 1 vulnerability.

1) NULL pointer dereference (CVE-ID: CVE-2026-43369)

CWE-ID: CWE-476 - NULL Pointer Dereference

CVSSv4: 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

The vulnerability allows a local user to cause a denial of service.

The vulnerability exists due to a NULL pointer dereference in amdgpu_device_set_cg_state and amdgpu_device_set_pg_state when cleaning up the device after failed GPU initialization. A local user can trigger GPU initialization failure involving an unsupported hardware block to cause a denial of service.

The issue occurs during GPU teardown when an IP block has a NULL version pointer.

Remediation

Install update from vendor's website.

References

• https://git.kernel.org/stable/c/062ea905fff7756b2e87143ffccaece5cdb44267
• https://git.kernel.org/stable/c/43025c941aced9a9009f9ff20eea4eb78c61deb8
• https://git.kernel.org/stable/c/767cd24d3c4ae847688877def4891943f6611ecd