CVE-2022-50820 perf/arm_dmc620: Fix hotplug callback leak in dmc620_pmu_init()

In the Linux kernel, the following vulnerability has been resolved: perf/armdmc620: Fix hotplug callback leak in dmc620pmuinit dmc620pmuinit won't remove the callback added by cpuhpsetupstatemulti when platformdriverregister failed. Remove the callback by cpuhpremovemultistate in fail path. Simil...

PT-2023-34301

Name of the Vulnerable Software and Affected Versions Linux Kernel versions prior to v5.15.86 Description The issue is related to a hotplug callback leak in the dmc620 pmu init function. The actual impact and attack plausibility have not yet been proven. Recommendations For Linux Kernel versions...