SB2025022862 - Improper locking in Linux kernel dc dce driver
Published: February 28, 2025 Updated: May 11, 2025
Security Bulletin ID
SB2025022862
Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Improper locking (CVE-ID: CVE-2025-21819)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to improper locking within the dmub_hw_lock_mgr_inbox0_cmd() function in drivers/gpu/drm/amd/display/dc/dce/dmub_hw_lock_mgr.c. A local user can perform a denial of service (DoS) attack.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/915697c2e69ac8d14dad498e6d6f43dbb7de3787
- https://git.kernel.org/stable/c/95c75578c420110c43791295985abb961d6dc033
- https://git.kernel.org/stable/c/a978864653e45d2671f99b09afcc1110e45d3dd9
- https://git.kernel.org/stable/c/dcc3f2c06d80da39eee742b51ddf0781affb260c
- https://git.kernel.org/stable/c/f245b400a223a71d6d5f4c72a2cb9b573a7fc2b6
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.1.129
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.12.14
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.13.3
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.14
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.6.78