#VU124460 Out-of-bounds read in Linux kernel - CVE-2026-23375
Published: March 25, 2026
Vulnerability identifier: #VU124460
Vulnerability risk: Low
CVSSv4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2026-23375
CWE-ID: CWE-125
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerable software:
Linux kernel
Linux kernel
Software vendor:
Linux Foundation
Linux Foundation
Description
The vulnerability allows a local user to cause a denial of service.
The vulnerability exists due to improper access control in the file_thp_enabled() function when handling files on anonymous inodes via processing memory operations. A local user can trigger memory operations such as MADV_COLLAPSE or rely on khugepaged activity to cause a kernel crash or trigger erroneous memory failure reports.
Exploitation does not require elevated privileges but requires the ability to create or access files on anonymous inodes such as guest_memfd or secretmem. The impact includes system crash or spurious memory failure warnings in the kernel log.
Remediation
Install security update from vendor's repository.