PT-2026-34949 · Linux · Linux Kernel

CVE-2026-31597

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Published

2026-04-24

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Updated

2026-07-31

CVSS v3.1

7.8

High

VectorAV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Name of the Vulnerable Software and Affected Versions Linux kernel (affected versions not specified)
Description A use-after-free issue exists in the ocfs2 fault() function. This occurs because filemap fault() may drop the mmap lock before returning VM FAULT RETRY. In such cases, a concurrent munmap() can trigger remove vma() and free the vm area struct via RCU. Consequently, the saved vma pointer in ocfs2 fault() becomes a dangling pointer, which is then dereferenced during the trace ocfs2 fault() call.
Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

Use After Free

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Weakness Enumeration

CWE-416

Related Identifiers

CVE-2026-31597
ECHO-393D-B369-89D5
OESA-2026-3155
OPENSUSE-SU-2026:10703-1
USN-8488-1
USN-8488-2
USN-8507-1
USN-8567-1
USN-8569-1
USN-8574-1
USN-8574-2
USN-8574-3
USN-8575-1
USN-8575-2
USN-8575-3
USN-8576-1
USN-8576-2
USN-8595-1
USN-8595-2
USN-8595-3
USN-8596-1
USN-8597-1
USN-8603-1
USN-8606-1
USN-8607-1
USN-8608-1
USN-8609-1
USN-8610-1
USN-8619-1
USN-8620-1
USN-8620-2
USN-8620-3
USN-8620-4

Affected Products

Linux Kernel