jbd2: remove wrong sb->s_sequence check
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.
02 / AFFECTED SOFTWARE
Affected packages
316 explicit affected versions
03 / CONNECTIONS
Connected vulnerabilities
04 / EVIDENCE
Source records
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.
05 / REFERENCES
Further evidence
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- https://git.kernel.org/stable/c/3b4643ffaf72d7a5a357e9bf68b1775f8cfe7e77
- https://git.kernel.org/stable/c/9eaec071f111cd2124ce9a5b93536d3f6837d457
- https://git.kernel.org/stable/c/ad926f735b4d4f10768fec7d080cadeb6d075cac
- https://git.kernel.org/stable/c/b0cca357f85beb6144ab60c62dcc98508cc044bf
- https://git.kernel.org/stable/c/b479839525fe7906966cdc4b5b2afbca048558a1
- https://git.kernel.org/stable/c/c88f7328bb0fff66520fc9164f02b1d06e083c1b
- https://git.kernel.org/stable/c/c98eb9ffb1d9c98237b5e1668eee17654e129fb0
- https://git.kernel.org/stable/c/cf30432f5b3064ff85d85639c2f0106f89c566f6
- https://git.kernel.org/stable/c/e6eff39dd0fe4190c6146069cc16d160e71d1148
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/37xxx/CVE-2025-37839.json
- https://lists.debian.org/debian-lts-announce/2025/05/msg00030.html
- https://lists.debian.org/debian-lts-announce/2025/05/msg00045.html
- https://nvd.nist.gov/vuln/detail/CVE-2025-37839