PT-2026-35004 · Linux · Linux Kernel

Published 2026-04-24 · Updated 2026-04-28 · CVE-2026-31652

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 A memory leak exists in the DAMON statistics module. The damon stat start() function allocates a damon ctx object (damon stat context), but if the damon call() function fails, this object is not deallocated. If a user subsequently attempts to enable the feature again, the previously allocated damon ctx object is leaked. Simply deallocating the object upon damon call() failure could lead to a use-after-free scenario, as the kdamond main function might still be accessing the damon ctx object.

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

Use After Free

Weakness Enumeration

CWE-416

Related Identifiers

CVE-2026-31652

Affected Products

Linux Kernel

References · 12

• https://git.kernel.org/stable/c/4c04c6b47c361612b1d70cec8f7a60b1482d1400 · Patch
• https://cve.org/CVERecord?id=CVE-2026-31652 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2026-31652 · Security Note
• https://git.kernel.org/stable/c/16c92e9bf55fa049ddb5e894dc0623dacd46a620 · Patch
• https://security-tracker.debian.org/tracker/CVE-2026-31652 · Vendor Advisory
• https://git.kernel.org/stable/c/447f8870b484f6596d7a7130e72bd0a3f1e037bb · Patch
• https://ubuntu.com/security/CVE-2026-31652 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2026-31652 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2026-31652 · Vendor Advisory
• https://git.kernel.org/linus/4c04c6b47c361612b1d70cec8f7a60b1482d1400 · Note
• https://twitter.com/CVEnew/status/2047731927918997518 · Twitter Post
• https://twitter.com/VulmonFeeds/status/2047774861850734658 · Twitter Post