CVE-2026-23014

HIGH

Linux Kernel 6.18-6.18.5 - Use-After-Free in perf_swevent_cancel_hrtimer

Title source: llm
STIX 2.1

Description

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.

Scores

CVSS v3 7.8
EPSS 0.0002
EPSS Percentile 5.6%
Attack Vector LOCAL
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Details

Status published
Products (12)
linux/Kernel 6.18.0 - 6.18.6linux
Linux/Linux < 6.18
Linux/Linux 6.17.8 - 6.18
Linux/Linux 6.18
Linux/Linux 6.18.6 - 6.18.*
Linux/Linux 6.19
Linux/Linux 6b8c512811644cf2f5eaf6f44e928683c54127f0
Linux/Linux eb3182ef0405ff2f6668fd3e5ff9883f60ce8801 - deee9dfb111ab00f9dfd46c0c7e36656b80f5235
Linux/Linux eb3182ef0405ff2f6668fd3e5ff9883f60ce8801 - ff5860f5088e9076ebcccf05a6ca709d5935cfa9
linux/linux_kernel 6.18
... and 2 more
Published Jan 28, 2026
Tracked Since Feb 18, 2026