CVE-2026-23014 Details
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.
A vulnerability exists in the Linux kernel's performance event handling, specifically within the stable branch. The issue arises because the 'perf_swevent_cancel_hrtimer()' function may not fully deactivate a high-resolution timer before the associated event is freed. This oversight can lead to improper management of timer events, potentially causing system performance issues. The vulnerability has been addressed by ensuring that the timer is completely canceled before the event is released, by adding a dedicated destruction handler for the timer events.
Users can upgrade to the latest version of the Linux kernel where this vulnerability has been fixed. Instructions for downloading the patched version are available on the Linux kernel official website.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
No SSVC data is available for this CVE.
References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://git.kernel.org/stable/c/deee9dfb111ab00f9dfd46c0c7e36656b80f5235 | kernel.org | Patch |
| https://git.kernel.org/stable/c/ff5860f5088e9076ebcccf05a6ca709d5935cfa9 | kernel.org | Patch |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| NVD-CWE-noinfo | Insufficient Information to Classify Weakness | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| linux linux kernel | >= 6.17.8, < 6.18 >= 6.18.1, < 6.18.6 6.18 - 6.19 rc1 6.19 rc2 6.19 rc3 6.19 rc4 6.19 rc5 6.19 rc6 6.19 rc7 6.19 rc8 |
CPE
Remediation
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Change History
4 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 17, 2026 | CVE Modified | kernel.org |
| Apr 27, 2026 | CVE Modified | kernel.org |
| Mar 25, 2026 | Initial Analysis | [email protected] |
| Jan 28, 2026 | New CVE Received | kernel.org |