CVE-2025-37839

jbd2: remove wrong sb->s_sequence check

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.

N/A

CVSS

Severity:

EPSS 0.04%

Affected: Linux Linux

References

Link	Tags
https://git.kernel.org/stable/c/cf30432f5b3064ff85d85639c2f0106f89c566f6
https://git.kernel.org/stable/c/b479839525fe7906966cdc4b5b2afbca048558a1
https://git.kernel.org/stable/c/ad926f735b4d4f10768fec7d080cadeb6d075cac
https://git.kernel.org/stable/c/3b4643ffaf72d7a5a357e9bf68b1775f8cfe7e77
https://git.kernel.org/stable/c/c88f7328bb0fff66520fc9164f02b1d06e083c1b
https://git.kernel.org/stable/c/9eaec071f111cd2124ce9a5b93536d3f6837d457
https://git.kernel.org/stable/c/c98eb9ffb1d9c98237b5e1668eee17654e129fb0
https://git.kernel.org/stable/c/b0cca357f85beb6144ab60c62dcc98508cc044bf
https://git.kernel.org/stable/c/e6eff39dd0fe4190c6146069cc16d160e71d1148

Frequently Asked Questions

What is the severity of CVE-2025-37839?: CVE-2025-37839 has not yet been assigned a CVSS score.
How to fix CVE-2025-37839?: To fix CVE-2025-37839, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2025-37839 being actively exploited in the wild?: As for now, there are no information to confirm that CVE-2025-37839 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2025-37839?: CVE-2025-37839 affects Linux Linux, Linux Linux.

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