CVE-2025-39842

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Source
https://cve.org/CVERecord?id=CVE-2025-39842
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2025-39842.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2025-39842
Downstream
Related
Published
2025-09-19T15:26:17.075Z
Modified
2026-03-20T12:43:04.481670Z
Summary
ocfs2: prevent release journal inode after journal shutdown
Details

In the Linux kernel, the following vulnerability has been resolved:

ocfs2: prevent release journal inode after journal shutdown

Before calling ocfs2deleteosb(), ocfs2journalshutdown() has already been executed in ocfs2dismountvolume(), so osb->journal must be NULL. Therefore, the following calltrace will inevitably fail when it reaches jbd2journalreleasejbdinode().

ocfs2dismountvolume()-> ocfs2deleteosb()-> ocfs2freeslot_info()-> __ocfs2freeslotinfo()-> evict()-> ocfs2evictinode()-> ocfs2clearinode()-> jbd2journalreleasejbdinode(osb->journal->jjournal,

Adding osb->journal checks will prevent null-ptr-deref during the above execution path.

Database specific 
{
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/39xxx/CVE-2025-39842.json",
    "cna_assigner": "Linux"
}
References

Affected packages

Git / git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git

Affected ranges

Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
da5e7c87827e8caa6a1eeec6d95dcf74ab592a01
Fixed
42c415c53ad2065088cc411d08925effa5b3d255
Fixed
e9188f66e94955431ddbe2cd1cdf8ff2bb486abf
Fixed
f4a917e6cd6c798f7adf39907f117fc754db1283
Fixed
85e66331b60601d903cceaf8c10a234db863cd78
Fixed
f46e8ef8bb7b452584f2e75337b619ac51a7cadf

Database specific

source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2025-39842.json"