CVE-2025-38038

A flaw was found in the Linux kernel. A local user could trigger a deadlock in the cpufreq: amd-pstate driver. This occurs when a lock intended for per-policy function calls conflicts with another lock during a mode-switch operation. This vulnerability can lead to a system hang, resulting in a Denial of Service (DoS).

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

To mitigate this issue, the amd-pstate kernel module can be prevented from loading. This may impact CPU frequency scaling and power management on systems with AMD processors.

To blacklist the module, create a file named /etc/modprobe.d/blacklist-amd-pstate.conf with the following content: blacklist amd-pstate

After creating the file, regenerate the initramfs and reboot the system for the changes to take effect. dracut -f -v A system reboot is required for the blacklist to be fully applied.