CVE-2023-53563

Name of the Vulnerable Software and Affected Versions Linux kernel versions prior to 6.5.0-rc2-amd-pstate-ut #5

Description The amd-pstate-ut driver in the Linux kernel does not properly release CPU policy after use in functions like amd pstate ut check perf() and amd pstate ut check freq(). This can lead to indefinite blocking of other entities attempting to access the policy, potentially resulting in a kernel panic when changing the amd pstate mode. The issue occurs because cpufreq cpu put() is not called where it is needed.

Recommendations Update to a newer version of the Linux kernel that contains a fix for this vulnerability.