CVE-2025-37839
HIGH severity · CVSS 7.8
7.8CVSS HIGH
Summary
In the Linux kernel, the following vulnerability has been resolved: jbd2: remove wrong sb->s_sequence check Journal emptiness is not determined by sb->s_sequence == 0 but rather by sb->s_start == 0 (which is set a few lines above). Furthermore 0 is a valid transaction ID so the check can spuriously trigger. Remove the invalid WARN_ON.
Impact & exploitability
Attack vectorLocal
Attack complexityLow
Privileges requiredLow
User interactionNone
Confidentiality impactHigh
Integrity impactHigh
Availability impactHigh
Exploit probability (EPSS)0%
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Affected products we track (2)
Recommendation
Apply the vendor fix promptly. Open any affected product above for its exact safe version.
Official patch: https://git.kernel.org/stable/c/3b4643ffaf72d7a5a357e9bf68b1775f8cfe7e77 ↗
Additional information
- NVD record
- https://git.kernel.org/stable/c/3b4643ffaf72d7a5a357e9bf68b1775f8cfe7e77Patch
- https://git.kernel.org/stable/c/9eaec071f111cd2124ce9a5b93536d3f6837d457Patch
- https://git.kernel.org/stable/c/ad926f735b4d4f10768fec7d080cadeb6d075cacPatch
- https://git.kernel.org/stable/c/b0cca357f85beb6144ab60c62dcc98508cc044bfPatch
- https://git.kernel.org/stable/c/b479839525fe7906966cdc4b5b2afbca048558a1Patch
- https://git.kernel.org/stable/c/c88f7328bb0fff66520fc9164f02b1d06e083c1bPatch
- https://git.kernel.org/stable/c/c98eb9ffb1d9c98237b5e1668eee17654e129fb0Patch
- https://git.kernel.org/stable/c/cf30432f5b3064ff85d85639c2f0106f89c566f6Patch