SB20260812437 - Improper handling of exceptional conditions in Linux kernel amd amdgpu driver

Description

This security bulletin contains information about 1 vulnerability.

1) Improper handling of exceptional conditions (CVE-ID: CVE-2026-68111)

CWE-ID: CWE-755 - Improper Handling of Exceptional Conditions

CVSSv4: 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]

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

The vulnerability exists due to improper exception handling in the amdgpu gfx_v9_0 driver when processing misaligned GPU buffer or address values. A local user can trigger BUG_ON() assertions with crafted alignment-related values to cause a denial of service.

The issue results in a kernel crash instead of a warning when alignment checks fail.

Remediation

Install update from vendor's website.

References

• https://git.kernel.org/stable/c/042c047e8bc9c9ada7574028a8e4592102e2e1fd
• https://git.kernel.org/stable/c/43768ad42b8f1a91652b86e0731ac14d6853cebb
• https://git.kernel.org/stable/c/6302be10b521f5106ce01eb5a724b9e7945a5061
• https://git.kernel.org/stable/c/6c8b9c1f03c7169c9577098b0c3035617606f8d4
• https://git.kernel.org/stable/c/d74a6351d3f64e1f8a0fba28b369c0eeecf517f1