CVE-2025-38697 jfs: upper bound check of tree index in dbAllocAG

What is CVE-2025-38697?

CVE-2025-38697 is a high-severity vulnerability in Debian Debian Linux, published on 4 Sep 2025. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

In the Linux kernel, the following vulnerability has been resolved:

jfs: upper bound check of tree index in dbAllocAG

When computing the tree index in dbAllocAG, we never check if we are out of bounds realative to the size of the stree. This could happen in a scenario where the filesystem metadata are corrupted.

Weakness: CWE-129

Which versions are affected by CVE-2025-38697?

It affects 2 products.

Products include Debian Debian Linux, Linux kernel.

How do I fix CVE-2025-38697?

Apply the vendor's patch.

Is CVE-2025-38697 being exploited?

There is no known exploitation of CVE-2025-38697 in the wild and no public exploit code.

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• CVE-2025-39682 Linux Kernel Improper Check for Unusual or Exceptional Conditions Exploited Critical 9.8
• CVE-2024-9680 Mozilla Firefox Use-After-Free Exploited Critical 9.8

All Debian Debian Linux vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as BELL-CVE-2025-38697, DEBIAN-CVE-2025-38697, GHSA-323x-vj5p-jwh3, ROOT-OS-DEBIAN-11-CVE-2025-38697, ROOT-OS-DEBIAN-12-CVE-2025-38697, ROOT-OS-UBUNTU-2204-CVE-2025-38697 and 2 more.