CVE-2025-37839
What it is
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.
At a glance
- Exploitability
- Can be exploited locally on the machine with a low-privilege account. High risk of data exposure, data tampering, service disruption.
- Exploit odds
- 0.3% chance of exploitation in the next 30 days (EPSS).
- Fix
- A patch, advisory or fixed version is referenced. Upgrade or apply it.
Timeline
- PublishedDisclosed publicly on CVE.org and NVD
- Last updatedMost recent change to the record
Why it ranks here
- Exploited in the wild: no, CISA does not list it.
- Exploit odds: 0.3% in the next 30 days (EPSS).
- Severity: 7.8 HIGH (CVSS).
- Fix: a patch or advisory is linked.
Details
- Published
- Last modified
- Exploit probability
- 0.3% · EPSS, next 30 days
- Record status
- Analyzed
Affected
- Linux Kernel < 5.4.293
- Linux Kernel < 5.10.237
- Linux Kernel < 5.15.181
- Linux Kernel < 6.1.135
- Linux Kernel < 6.6.88
- Linux Kernel < 6.12.24
- Linux Kernel < 6.13.12
- Linux Kernel < 6.14.3
Attack profile CVSS 3.1 · 7.8
- Attack vector
- Local
- Complexity
- Low
- Privileges needed
- Low
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Raw vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Is it in your code?
Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.
Read https://cve-list.com/agent/cve/CVE-2025-37839.md and follow it. Check whether this project is affected by CVE-2025-37839. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.
Fix and advisories
- 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
References
- 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://lists.debian.org/debian-lts-announce/2025/05/msg00030.html
- https://lists.debian.org/debian-lts-announce/2025/05/msg00045.html