Missing release of memory after effective lifetime in Linux kernel - CVE-2026-23260
Published: March 20, 2026
Vulnerability identifier: #VU124188
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2026-23260
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 disclose sensitive information.
The vulnerability exists due to improper memory management in the regmap maple tree component when storing a newly allocated block. A local user can trigger a failure in the storage operation to cause memory disclosure.
Memory allocated for a new entry is not freed on failure of mas_store_gfp(), potentially exposing uninitialized memory contents. The issue requires the ability to write to regmap-controlled hardware registers, typically available to privileged users.
How to mitigate CVE-2026-23260
Install security update from vendor's repository.