PT-2025-38549 · Linux+5 · Linux Kernel+5
Published
2025-09-19
·
Updated
2026-05-07
·
CVE-2025-39842
CVSS v3.1
5.5
Medium
| 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
The Linux kernel contains a flaw within the ocfs2 subsystem. Specifically, a null-pointer dereference can occur during the journal shutdown process due to a race condition where
osb->journal may be NULL before ocfs2 delete osb() is called. This occurs because ocfs2 journal shutdown() is executed prior to ocfs2 delete osb(), potentially leading to a failure when attempting to release the journal inode via jbd2 journal release jbd inode(). Adding checks for osb->journal prevents this null-pointer dereference.Recommendations
At the moment, there is no information about a newer version that contains a fix for this vulnerability.
Exploit
NULL Pointer Dereference
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Weakness Enumeration
Related Identifiers
Affected Products
Astra Linux
Debian
Linuxmint
Linux Kernel
Suse
Ubuntu