CVE-2026-23014: Linux Kernel

Medium severity, CVSS 5.5. EPSS: 0.1% chance of exploitation in the next 30 days.

In the Linux kernel, the following vulnerability has been resolved: perf: Ensure swevent hrtimer is properly destroyed With the change to hrtimer_try_to_cancel() in perf_swevent_cancel_hrtimer() it appears possible for the hrtimer to still be active by the time the event gets freed. Make sure the event does a full hrtimer_cancel() on the free path by installing a perf_event::destroy handler.

Affected products

• Linux Linux Kernel: from 6.17.8, before 6.18 (fixed in 6.18); from 6.18.1, before 6.18.6 (fixed in 6.18.6); version 6.18 only; version 6.19 only

Published 2026-01-28. Last modified 2026-06-17.