SB2025090867 - NULL pointer dereference in Linux kernel modules hdcp driver
Published: September 8, 2025
Security Bulletin ID
SB2025090867
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) NULL pointer dereference (CVE-ID: CVE-2025-39675)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to NULL pointer dereference within the mod_hdcp_hdcp1_create_session() function in drivers/gpu/drm/amd/display/modules/hdcp/hdcp_psp.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/2af45aadb7b5d3852c76e2d1e985289ada6f48bf
- https://git.kernel.org/stable/c/2ee86b764c54e0d6a5464fb023b630fdf20869cd
- https://git.kernel.org/stable/c/7a2ca2ea64b1b63c8baa94a8f5deb70b2248d119
- https://git.kernel.org/stable/c/857b8387a9777e42b36e0400be99b54c251eaf9a
- https://git.kernel.org/stable/c/97fc94c5fd3c6ac5a13e457d38ee247737b8c4bd
- https://git.kernel.org/stable/c/ee0373b20bb67b1f00a1b25ccd24c8ac996b6446