PT-2026-5128 · Linux · Linux Kernel

Published 2025-01-28 · Updated 2026-01-28 · CVE-2026-23014

Positive Technologies (AI Summary)

CVSS v3.1

7.8

High

Base vector

AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Name of the Vulnerable Software and Affected Versions Linux kernel (affected versions not specified)

Description The Linux kernel contains an issue where a swevent hrtimer may not be properly destroyed. A change to hrtimer try to cancel() in perf swevent cancel hrtimer() could leave the hrtimer active even after the event is freed. This is addressed by ensuring a full hrtimer cancel() is performed on the free path by installing a perf event::destroy handler.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

RCE

Weakness Enumeration

CWE-20

Related Identifiers

BDU:2026-01115

CVE-2026-23014

Affected Products

Linux Kernel

References · 17

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/23xxx/CVE-2026-23014.json · Exploit
• https://security-tracker.debian.org/tracker/CVE-2026-23014 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2026-23014 · Vendor Advisory
• https://git.kernel.org/stable/c/ff5860f5088e9076ebcccf05a6ca709d5935cfa9 · Patch
• https://osv.dev/vulnerability/UBUNTU-CVE-2026-23014 · Vendor Advisory
• https://bdu.fstec.ru/vul/2026-01115 · Security Note
• https://ubuntu.com/security/CVE-2026-23014 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2026-23014 · Security Note
• https://git.kernel.org/stable/c/deee9dfb111ab00f9dfd46c0c7e36656b80f5235 · Patch
• https://nvd.nist.gov/vuln/detail/CVE-2026-23014 · Security Note
• https://osv.dev/vulnerability/CVE-2026-23014 · Vendor Advisory
• https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git · Note
• https://twitter.com/VulmonFeeds/status/2016617196898627724 · Twitter Post
• https://git.kernel.org/linus/ff5860f5088e9076ebcccf05a6ca709d5935cfa9 · Note
• https://t.me/CVEtracker/43160 · Telegram Post