SB20260325118 - Cryptographic Issues in Linux kernel amd amdgpu driver
Published: March 25, 2026
Security Bulletin ID
SB20260325118
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) Cryptographic Issues (CVE-ID: CVE-2026-23338)
The vulnerability allows a local user to cause a denial of service.
The vulnerability exists due to improper input validation in the drm/amdgpu/userq component when handling ioctl calls with a too small num_fences parameter. A local user can provide a specially crafted input to cause the kernel to emit warnings, leading to unnecessary logging and potential system disruption.
The attacker needs local system access and no additional privileges or user interaction beyond the ability to invoke the vulnerable ioctl.
Remediation
Install update from vendor's website.