SB20260812217 - Deadlock in Linux kernel amd pds_core driver

Description

This security bulletin contains information about 1 vulnerability.

1) Deadlock (CVE-ID: CVE-2026-68319)

CWE-ID: CWE-833 - Deadlock

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 a deadlock in the pds_core reset and device removal handling when a PCI reset thread runs concurrently with device removal. A local user can trigger concurrent reset and remove operations to cause a denial of service.

The issue occurs because the reset work waits for a device lock that is already held during the unbind sequence, while device removal waits for the workqueue to complete.

Remediation

Install update from vendor's website.

References

• https://git.kernel.org/stable/c/19ef775c91c6bf4bd2b60f6616f4e28b621cdd6a
• https://git.kernel.org/stable/c/54f905821f26d385fba407a920b51f0a752c76dc
• https://git.kernel.org/stable/c/90d9f3ef28843e6c35149324b8eefb427a7435c2
• https://git.kernel.org/stable/c/ab0eec0ff0a421737a37f510ceab5c6ea59cd05a