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CVE-2026-23014— perf: Ensure swevent hrtimer is properly destroyed

Quick assessment

Affected
Linux Linux
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于事件释放路径上未正确销毁hrtimer，可能导致内存损坏。

CVSS 7.8 · High EPSS 0.12% · P2

Possible ATT&CK Techniques 1 AI

T1499 · Endpoint Denial of Service

Affected Version Matrix 8

VendorProduct Version RangeStatus
Linux Linux eb3182ef0405ff2f6668fd3e5ff9883f60ce8801< deee9dfb111ab00f9dfd46c0c7e36656b80f5235 affected
eb3182ef0405ff2f6668fd3e5ff9883f60ce8801< ff5860f5088e9076ebcccf05a6ca709d5935cfa9 affected
6b8c512811644cf2f5eaf6f44e928683c54127f0 affected
6.17.8< 6.18 affected
6.18 affected
< 6.18 unaffected
6.18.6≤ 6.18.* unaffected
6.19≤ * unaffected
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I. Basic Information for CVE-2026-23014

Vulnerability Information
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Vulnerability Title
perf: Ensure swevent hrtimer is properly destroyed
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
Linux kernel 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于事件释放路径上未正确销毁hrtimer，可能导致内存损坏。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Linux Linux eb3182ef0405ff2f6668fd3e5ff9883f60ce8801 ~ deee9dfb111ab00f9dfd46c0c7e36656b80f5235 -
Linux Linux 6.18 -

II. Public POCs for CVE-2026-23014

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III. Intelligence Information for CVE-2026-23014

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IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2026-23014

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