PT-2026-43909 · Linux · Linux Kernel

Published 2026-05-27 · Updated 2026-06-04 · CVE-2026-46042

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 Memory leaks occur in the weighted interleave auto store() function within the mm/mempolicy component. The issue arises because the old wi state is fetched only when the input is null. This leads to two scenarios: first, when a user writes "false" while the mode is already manual, the function returns early without freeing the newly allocated new wi state. Second, when a user writes "true", the old wi state remains null, causing the old state to be overwritten by rcu assign pointer() without being freed. This second scenario can be triggered repeatedly by writing "1" in a loop.

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-2026-46042

OPENSUSE-SU-2026:10954-1

Affected Products

Linux Kernel

References · 285

• https://git.kernel.org/stable/c/c42a7efb9060d89b72708ffaf255d0002c2164a7 · Patch
• https://osv.dev/vulnerability/openSUSE-SU-2026:10954-1 · Vendor Advisory
• https://ubuntu.com/security/CVE-2026-46042 · Vendor Advisory
• https://git.kernel.org/stable/c/6fae274ce0e3109cbbc4c18b354eaace1f0af7d7 · Patch
• https://git.kernel.org/stable/c/39caa9ca863f96b3d00447c5aa200cabda489856 · Patch
• https://cve.org/CVERecord?id=CVE-2026-46042 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2026-46042 · Security Note
• https://security-tracker.debian.org/tracker/CVE-2026-46042 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2026-46042 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2026-46042 · Vendor Advisory
• https://suse.com/security/cve/CVE-2026-46048 · Note
• https://suse.com/security/cve/CVE-2026-46208 · Note
• https://suse.com/security/cve/CVE-2026-46168 · Note
• https://suse.com/security/cve/CVE-2026-46084 · Note
• https://suse.com/security/cve/CVE-2026-46209 · Note