CVE-2023-52859: Linux Kernel

High severity, CVSS 7.8. EPSS: 0.2% chance of exploitation in the next 30 days.

In the Linux kernel, the following vulnerability has been resolved: perf: hisi: Fix use-after-free when register pmu fails When we fail to register the uncore pmu, the pmu context may not been allocated. The error handing will call cpuhp_state_remove_instance() to call uncore pmu offline callback, which migrate the pmu context. Since that's liable to lead to some kind of use-after-free. Use cpuhp_state_remove_instance_nocalls() instead of cpuhp_state_remove_instance() so that the notifiers don't execute after the PMU device has been failed to register.

Affected products

• Linux Linux Kernel: from 5.13, before 5.15.139 (fixed in 5.15.139); from 5.16, before 6.1.63 (fixed in 6.1.63); from 6.2, before 6.5.12 (fixed in 6.5.12); from 6.6, before 6.6.2 (fixed in 6.6.2)

Published 2024-05-21. Last modified 2026-06-17.