CVE-2026-23014

perf: Ensure swevent hrtimer is properly destroyed

Summary

Original description

The description as published by the source.

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.

Source: OSV.dev (Open Source Vulnerabilities) NVD OSV

Affected packages

Linux Kernel

[{"type":"ECOSYSTEM","events":[{"introduced":"6.18.0"},{"fixed":"6.18.6"}]}]

Fix status by distribution

Fixed packages published by each distribution for this CVE

BellSoft Alpaquita BELL-CVE-2026-23014 linux-lts Fixed in: 6.18.35-r1
Debian DEBIAN-CVE-2026-23014 linux Fixed in: 6.18.8-1
Ubuntu UBUNTU-CVE-2026-23014 linux-hwe-edge

References

advisory github.com
advisory nvd.nist.gov
package git.kernel.org
web git.kernel.org
web git.kernel.org