What’s Vulnerable › Vulnerabilities

CVE-2025-37740: jfs: add sanity check for agwidth in dbMount

• Severity: medium (CVSS 5.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2025-05-01 · updated 2026-06-17
• Weakness: CWE-369

Description

In the Linux kernel, the following vulnerability has been resolved: jfs: add sanity check for agwidth in dbMount The width in dmapctl of the AG is zero, it trigger a divide error when calculating the control page level in dbAllocAG. To avoid this issue, add a check for agwidth in dbAllocAG.

Affected products

• Debian Linux: 11.0
• Linux kernel: before 5.4.293; from 5.5 before 5.10.237; from 5.11 before 5.15.181; from 5.16 before 6.1.135; from 6.2 before 6.6.88; from 6.7 before 6.12.24 — fixed in 5.10.237, 5.15.181, 5.4.293, 6.1.135, 6.12.24, 6.13.12

How to fix

Upgrade to a fixed version: Linux kernel 5.10.237, 5.15.181, 5.4.293, 6.1.135. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/722e72f7f9c69fcb3ab7988c2471feff7a4c8de1
• https://git.kernel.org/stable/c/a065cec230aa807c18828a3eee82f1c8592c2adf
• https://git.kernel.org/stable/c/a260bf14cd347878f01f70739ba829442a474a16
• https://git.kernel.org/stable/c/a741f29ac8b6374c9904be8b7ac7cdfcd7e7e4fa
• https://git.kernel.org/stable/c/c8c96a9e7660e5e5eea445978fe8f2e432d91c1f
• https://git.kernel.org/stable/c/cc0bc4cb62ce5fa0c383e3bf0765d01f46bd49ac
• https://git.kernel.org/stable/c/ccd97c8a4f90810f228ee40d1055148fa146dd57
• https://git.kernel.org/stable/c/ddf2846f22e8575d6b4b6a66f2100f168b8cd73d
• https://git.kernel.org/stable/c/e3f85edb03183fb06539e5b50dd2c4bb42b869f0
• https://lists.debian.org/debian-lts-announce/2025/05/msg00030.html
• https://lists.debian.org/debian-lts-announce/2025/05/msg00045.html

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