CVE-2025-38692

/// Technical description

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

exfat: add cluster chain loop check for dir

An infinite loop may occur if the following conditions occur due to

file system corruption.

(1) Condition for exfat_count_dir_entries() to loop infinitely.

- The cluster chain includes a loop.

- There is no UNUSED entry in the cluster chain.

(2) Condition for exfat_create_upcase_table() to loop infinitely.

- The cluster chain of the root directory includes a loop.

- There are no UNUSED entry and up-case table entry in the cluster

chain of the root directory.

(3) Condition for exfat_load_bitmap() to loop infinitely.

- The cluster chain of the root directory includes a loop.

- There are no UNUSED entry and bitmap entry in the cluster chain

of the root directory.

(4) Condition for exfat_find_dir_entry() to loop infinitely.

- The cluster chain includes a loop.

- The unused directory entries were exhausted by some operation.

(5) C

/// Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

/// References