PT-2026-34364 · Linux · Linux Kernel

Published 2026-04-22 · Updated 2026-04-23 · CVE-2026-31459

Positive Technologies (AI Summary)

CVSS v3.1

5.5

Medium

Base vector

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

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

Description A memory leak occurs in DAMON SYSFS during allocation failure. Specifically, when the function damon sysfs new test ctx() fails within damon sysfs commit input(), the param ctx variable is leaked because the early return bypasses the cleanup process. Additionally, a privileged user can trigger a NULL pointer dereference by executing incorrect control sequences.

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

Memory Leak

Weakness Enumeration

CWE-401

Related Identifiers

CVE-2026-31459

Affected Products

Linux Kernel

References · 11

• https://osv.dev/vulnerability/UBUNTU-CVE-2026-31459 · Vendor Advisory
• https://git.kernel.org/stable/c/7fe000eb32904758a85e62f6ea9483f89d5dabfc · Patch
• https://security-tracker.debian.org/tracker/CVE-2026-31459 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-31459 · Security Note
• https://cve.org/CVERecord?id=CVE-2026-31459 · Security Note
• https://git.kernel.org/stable/c/e9de9f3ce06b133a348006668bc8d25c6e504867 · Patch
• https://git.kernel.org/stable/c/f76f0a964bc3d7b7e253b43c669c41356bc54e71 · Patch
• https://osv.dev/vulnerability/DEBIAN-CVE-2026-31459 · Vendor Advisory
• https://ubuntu.com/security/CVE-2026-31459 · Vendor Advisory
• https://twitter.com/CVEnew/status/2046980029330932158 · Twitter Post
• https://git.kernel.org/linus/7fe000eb32904758a85e62f6ea9483f89d5dabfc · Note