Memory leak in Linux kernel - CVE-2026-46042
Published: May 28, 2026
Vulnerability identifier: #VU132450
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2026-46042
CWE-ID: CWE-401
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vendor: Linux Foundation
Affected software:
Linux kernel
Linux kernel
Detailed vulnerability description
The vulnerability allows a local user to cause a denial of service.
The vulnerability exists due to improper resource management in weighted_interleave_auto_store() when processing writes that toggle weighted interleave mode. A local user can repeatedly write crafted values such as "1" to trigger memory leaks and cause a denial of service.
The issue can be triggered repeatedly by writing values that match or change the current mode, leading to leaked kernel memory.
How to mitigate CVE-2026-46042
Install security update from vendor's repository.