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.
Affected products
linux: linux kernel; debian: debian linux
References10
- git.kernel.org/stable/c/3b4643ffaf72d7a5a357e9bf68b1775f8cfe7e77 Patch
- git.kernel.org/stable/c/9eaec071f111cd2124ce9a5b93536d3f6837d457 Patch
- git.kernel.org/stable/c/ad926f735b4d4f10768fec7d080cadeb6d075cac Patch
- git.kernel.org/stable/c/b0cca357f85beb6144ab60c62dcc98508cc044bf Patch
- git.kernel.org/stable/c/b479839525fe7906966cdc4b5b2afbca048558a1 Patch
- git.kernel.org/stable/c/c88f7328bb0fff66520fc9164f02b1d06e083c1b Patch
- git.kernel.org/stable/c/c98eb9ffb1d9c98237b5e1668eee17654e129fb0 Patch
- git.kernel.org/stable/c/cf30432f5b3064ff85d85639c2f0106f89c566f6 Patch
- git.kernel.org/stable/c/e6eff39dd0fe4190c6146069cc16d160e71d1148 Patch
- lists.debian.org/debian-lts-announce/2025/05/msg00030.html Mailing ListThird Party Advisory
Metrics
- CVSS 3.1
-
7.8
HIGH
Score source: NVD
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H - EPSS — exploit probability
- 0% percentile: 27 · as of 7 November 2026
Could this be exploited in your environment?
A patch closes the known hole. A penetration test shows what an attacker can still reach — with proof.