SB20260720425 - Improper Check or Handling of Exceptional Conditions in Linux kernel amd amdgpu driver

Description

This security bulletin contains information about 1 vulnerability.

1) Improper Check or Handling of Exceptional Conditions (CVE-ID: CVE-2026-63846)

CWE-ID: CWE-703 - Improper Check or 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 handling of unsupported user fence writes in jpeg v3.0 ring handling when processing command submissions with user fences. A local user can submit a command stream with a user fence to cause a denial of service.

The issue affects JPEG v3.0 rings, which do not support 64-bit user fence writes.

Remediation

Install update from vendor's website.

References

• https://git.kernel.org/stable/c/303da8279f195cc741adc52c1b44d6b64de63bb0
• https://git.kernel.org/stable/c/48ce00787e3fddd2b45692fc991b8ab128343da5
• https://git.kernel.org/stable/c/5ada37d7f736f9feeaa06a25e470a4c74e67a61a
• https://git.kernel.org/stable/c/a2baf12eec41f246689e6a3f8619af1200031576
• https://git.kernel.org/stable/c/ee035a9d3eed3a9f5a3e83c31a10b321c9598861