Vulnerability Description
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.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | < 5.4.293 |
| Debian | Debian Linux | 11.0 |
References
- 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
- https://git.kernel.org/stable/c/e6eff39dd0fe4190c6146069cc16d160e71d1148Patch
- https://lists.debian.org/debian-lts-announce/2025/05/msg00030.htmlMailing ListThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2025/05/msg00045.htmlMailing ListThird Party Advisory
FAQ
What is CVE-2025-37839?
CVE-2025-37839 is a vulnerability with a CVSS score of 7.8 (HIGH). 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 ...
How severe is CVE-2025-37839?
CVE-2025-37839 has been rated HIGH with a CVSS base score of 7.8/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2025-37839?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel, Debian Debian Linux.