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CVE-2024-57940

5.5 · MEDIUM

In the Linux kernel, the following vulnerability has been resolved: exfat: fix the infinite loop in exfat_readdir() If the file system is corrupted so that a cluster is linked to itself in the cl…

Published Jan 21, 2025CWE-835EPSS 0.22%

Overview

CVE-2024-57940 is a medium-severity vulnerability. It was published on January 21, 2025 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

This vulnerability has a CVSS 3.1 base score of 5.5, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

Technical description

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

exfat: fix the infinite loop in exfat_readdir()

If the file system is corrupted so that a cluster is linked to

itself in the cluster chain, and there is an unused directory

entry in the cluster, 'dentry' will not be incremented, causing

condition 'dentry < max_dentries' unable to prevent an infinite

loop.

This infinite loop causes s_lock not to be released, and other

tasks will hang, such as exfat_sync_fs().

This commit stops traversing the cluster chain when there is unused

directory entry in the cluster to avoid this infinite loop.

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

Refgit.kernel.org/stable/c/28c21f0ac5293a4bf19b3e0e32005d6dd31a6c17Refgit.kernel.org/stable/c/31beabd0f47f8c3ed9965ba861c9e5b252d4920aRefgit.kernel.org/stable/c/d8cfbb8723bd3d3222f360227a1cc15227189ca6Refgit.kernel.org/stable/c/d9ea94f5cd117d56e573696d0045ab3044185a15Refgit.kernel.org/stable/c/dc1d7afceb982e8f666e70a582e6b5aa806de063Refgit.kernel.org/stable/c/fee873761bd978d077d8c55334b4966ac4cb7b59Reflists.debian.org/debian-lts-announce/2025/03/msg00001.htmlReflists.debian.org/debian-lts-announce/2025/03/msg00002.htmlRefcert-portal.siemens.com/productcert/html/ssa-265688.htmlRefcert-portal.siemens.com/productcert/html/ssa-503939.html

How CyberStrike helps

Frequently asked questions

What is CVE-2024-57940?

CVE-2024-57940 is a medium-severity vulnerability. It was published on January 21, 2025 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

How severe is CVE-2024-57940?

This vulnerability has a CVSS 3.1 base score of 5.5, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2024-57940?

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.

How can CyberStrike help with CVE-2024-57940?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2024-57940 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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