jbd2: remove wrong sb->s_sequence check
Priority LOW 34Published · Updated
Key facts
- Attack vector
- Local
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Partial Red Hat: 5 without a fix
Attack profile from CVSS 3.1 · NVD. Fix status from CNA and Red Hat.
Summary
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.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00334 26th percentileScored 2026-11-07
Fix Partial Linux (Linux): 3.3, 5.4.293, 5.10.237 +7Red Hat: 5 without a fix
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Linux | Linux | 3.2.71 to before 3.3 | 3.3 | Patch available | CNA |
| Linux | Linux | 3.4 and later | 5.4.293, 5.10.237, 5.15.181, 6.1.135, 6.6.88, 6.12.24, 6.13.12, 6.14.3, 6.15 | Patch available | CNA |
- Linux VendorLinux Affected 3.2.71 to before 3.3 Fixed in 3.3 Patch available CNA
- Linux VendorLinux Affected 3.4 and later Fixed in 5.4.293, 5.10.237, 5.15.181, 6.1.135, 6.6.88, 6.12.24, 6.13.12, 6.14.3, 6.15 Patch available CNA
CPE configurations NVD · 2
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | before 5.4.293; 5.5 to before 5.10.237; 5.11 to before 5.15.181; 5.16 to before 6.1.135; 6.2 to before 6.6.88; 6.7 to before 6.12.24; 6.13 to before 6.13.12; 6.14 to before 6.14.3 | Vulnerable | Linux |
| cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:* | 11.0 | Vulnerable | Debian |
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* Versions before 5.4.293; 5.5 to before 5.10.237; 5.11 to before 5.15.181; 5.16 to before 6.1.135; 6.2 to before 6.6.88; 6.7 to before 6.12.24; 6.13 to before 6.13.12; 6.14 to before 6.14.3 Vulnerable ·Linux
- cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:* Versions 11.0 Vulnerable ·Debian
Remediation
- Fix · CNA Linux (Linux) Fixed in 3.3
- Fix · CNA Linux (Linux) Fixed in 5.4.293, 5.10.237, 5.15.181, 6.1.135, 6.6.88, 6.12.24, 6.13.12, 6.14.3, 6.15
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux 10 | Affected | No fix yet: Fix deferred |
| Red Hat Enterprise Linux 6 | Affected | No fix planned: Out of support scope |
| Red Hat Enterprise Linux 7 | Affected | No fix planned: Out of support scope |
| Red Hat Enterprise Linux 8 | Affected | No fix planned: Out of support scope |
| Red Hat Enterprise Linux 9 | Affected | No fix yet: Fix deferred |
Timeline
- 2026-10-02 Threatist record created from CVE-2025-37839
- 2026-10-03 Alias added: GHSA-8rhx-6jcw-6ghv
- 2026-11-05 CISA SSVC decision points changed
References
Patch 9
- 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
More Linux Kernel vulnerabilities
- TI-2025-26358 tls: fix handling of zero-length records on the rx_list KEVCVSS 3.1CRITICAL 9.8
- TI-2026-38352 netfilter: bridge: make ebt_snat ARP rewrite writable KEVCVSS 3.1HIGH 8.8
- TI-2013-05264 The (1) get_user and (2) put_user API functions in the Linux kernel before 3.5.5 on the… KEVCVSS 3.1HIGH 8.8
- TI-2022-00125 Integer overflow in kernel KEVCVSS 3.1HIGH 8.4
- TI-2013-01864 The perf_swevent_init function in kernel/events/core.c in the Linux kernel before 3.8.9… KEVCVSS 3.1HIGH 8.4
- TI-2021-05514 Heap Out-Of-Bounds Write in Netfilter IP6T_SO_SET_REPLACE KEVCVSS 3.1HIGH 8.3
Sources
- CVE-2025-37839 · CVE Program
- CVE-2025-37839 · NVD
- FIRST EPSS
- GHSA-8rhx-6jcw-6ghv · GitHub Advisory Database · CC BY 4.0
- CVE-2025-37839 · Red Hat security data · CC BY 4.0
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