Medium 5.5Published Jan 21, 2025

CVE-2024-57940exfat: fix the infinite loop in exfat_readdir()

Updated under an hour ago (Oct 27, 2026, 10:23 AM ET)

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Exploited in the last 30 days

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.

CVSS: 5.5 MEDIUM (v3.1, NVD)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Weakness (CWE): Not given
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Linux
NVD analysis: Modified
Record last updated: Oct 14, 2026
First seen by InfoSec Signals: Oct 14, 2026

Affected products

Affected products

Linux Linux linux:linux (from the name)	from ca06197382bde0a3bc20215595d1c9ce20c6e341 before d8cfbb8723bd3d3222f360227a1cc15227189ca6; from ca06197382bde0a3bc20215595d1c9ce20c6e341 before 28c21f0ac5293a4bf19b3e0e32005d6dd31a6c17; from ca06197382bde0a3bc20215595d1c9ce20c6e341 before 31beabd0f47f8c3ed9965ba861c9e5b252d4920a; from ca06197382bde0a3bc20215595d1c9ce20c6e341 before dc1d7afceb982e8f666e70a582e6b5aa806de063; from ca06197382bde0a3bc20215595d1c9ce20c6e341 before d9ea94f5cd117d56e573696d0045ab3044185a15; from ca06197382bde0a3bc20215595d1c9ce20c6e341 before fee873761bd978d077d8c55334b4966ac4cb7b59	CNA record
Siemens SIMATIC S7-1500 TM MFP - BIOS siemens:simatic_s7_1500_tm_mfp_bios (from the name)	all versions	CISA ADP
Siemens SIMATIC S7-1500 TM MFP - GNU/Linux subsystem siemens:simatic_s7_1500_tm_mfp_gnu_linux_subsystem (from the name)	before V1.1.1	CISA ADP
linux linux_kernel linux:linux_kernel	from 5.7 before 6.1.125; from 6.2 before 6.6.72; from 6.7 before 6.12.10; 6.13; 6.13; 6.13; 6.13; 6.13; and 1 more ranges	NVD

References

References

https://git.kernel.org/stable/c/d8cfbb8723bd3d3222f360227a1cc15227189ca6
https://git.kernel.org/stable/c/28c21f0ac5293a4bf19b3e0e32005d6dd31a6c17
https://git.kernel.org/stable/c/31beabd0f47f8c3ed9965ba861c9e5b252d4920a	patch
https://git.kernel.org/stable/c/dc1d7afceb982e8f666e70a582e6b5aa806de063	patch
https://git.kernel.org/stable/c/d9ea94f5cd117d56e573696d0045ab3044185a15	patch
https://git.kernel.org/stable/c/fee873761bd978d077d8c55334b4966ac4cb7b59	patch
https://lists.debian.org/debian-lts-announce/2025/03/msg00001.html
https://lists.debian.org/debian-lts-announce/2025/03/msg00002.html
https://cert-portal.siemens.com/productcert/html/ssa-265688.html
https://cert-portal.siemens.com/productcert/html/ssa-503939.html

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.