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CVE-2026-23014

20
FAUCET Score

CVE-2026-23014 addresses a vulnerability in the Linux kernel related to the perf subsystem. Specifically, it concerns the improper destruction of a swevent hrtimer, which could remain active even after the associated event is freed. This issue is resolved by ensuring a full hrtimer_cancel() operation is performed during the event's free path via a perf_event::destroy handler. The vulnerability has no assigned CVSS score, indicating an unquantified severity, and its FAUCET Risk Score is low at 17/100. Given its nature, it likely requires local access and specific conditions to trigger, suggesting a high attack complexity and limited direct impact on system integrity or confidentiality. There is no evidence of active exploitation, publicly available exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage, indicating a low current threat level.

Impacted Technologies

VendorProductVersion(s)CPE
>= 6.17.8, < 6.18CPE match
cpe:2.3:a:linux:linux_kernel:*:*:*:*:*:*:*:*
>= 6.17.8, < 6.18CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
>= 6.18.1, < 6.18.6CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
6.18CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:6.18:-:*:*:*:*:*:*
6.19CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:6.19:rc1:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.8HIGH

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
1.8
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.12%
Probability of exploitation in next 30 days
EPSS Percentile
1.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0012 is in the 12th percentile among its peer group of 15,940 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (6)

ubuntupatch availablevia ubuntu_usn
Product: linux-gcp-6.17 (noble)Fixed in: 6.17.0-1021.24~24.04.1
ubuntupatch availablevia ubuntu_usn
Product: linux-realtime-6.17 (noble)Fixed in: 6.17.0-1018.20~24.04.1
ubuntupatch availablevia ubuntu_usn
Product: linux-oem-6.17 (noble)Fixed in: 6.17.0-1030.30
ubuntupatch availablevia ubuntu_usn
Product: linux-azure-fde-6.17 (noble)Fixed in: 6.17.0-1018.18~24.04.1
ubuntupatch availablevia ubuntu_usn
Product: linux-azure-6.17 (noble)Fixed in: 6.17.0-1021.21~24.04.1
redhatno patchvia redhat_api
Product: Red Hat Enterprise Linux 10Fixed in: kernel

Vendor Advisories (5)

ubuntuUSN-8605-1

Linux kernel (Azure CVM) vulnerabilities

Jul 24, 2026
ubuntuUSN-8604-1

Linux kernel (Azure) vulnerabilities

Jul 24, 2026
ubuntuUSN-8594-1

Linux kernel (OEM) vulnerabilities

Jul 23, 2026
ubuntuUSN-8570-1

Linux kernel vulnerabilities

Jul 20, 2026
redhatCVE-2026-23014Low

kernel: perf: Ensure swevent hrtimer is properly destroyed

Jan 28, 2026

References

git.kernel.org / stable/c/deee9dfb111ab00f9dfd46c0c7e36656b80f5235
Patch
git.kernel.org / stable/c/ff5860f5088e9076ebcccf05a6ca709d5935cfa9
Patch