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

Quick assessment

Affected
Linux Linux
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于exfat模块在目录项未正确更新时陷入无限循环。这可能导致系统挂起或文件系统操作失败。

AI Predicted 5.9 Difficulty: Moderate EPSS 0.22% · P12

Affected Version Matrix 14

VendorProduct Version RangeStatus
Linux Linux ca06197382bde0a3bc20215595d1c9ce20c6e341< d8cfbb8723bd3d3222f360227a1cc15227189ca6 affected
ca06197382bde0a3bc20215595d1c9ce20c6e341< 28c21f0ac5293a4bf19b3e0e32005d6dd31a6c17 affected
ca06197382bde0a3bc20215595d1c9ce20c6e341< 31beabd0f47f8c3ed9965ba861c9e5b252d4920a affected
ca06197382bde0a3bc20215595d1c9ce20c6e341< dc1d7afceb982e8f666e70a582e6b5aa806de063 affected
ca06197382bde0a3bc20215595d1c9ce20c6e341< d9ea94f5cd117d56e573696d0045ab3044185a15 affected
ca06197382bde0a3bc20215595d1c9ce20c6e341< fee873761bd978d077d8c55334b4966ac4cb7b59 affected
5.7 affected
< 5.7 unaffected
… +6 more rows
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I. Basic Information for CVE-2024-57940

Vulnerability Information
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Vulnerability Title
exfat: fix the infinite loop in exfat_readdir()
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
Linux kernel 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于exfat模块在目录项未正确更新时陷入无限循环。这可能导致系统挂起或文件系统操作失败。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Linux Linux ca06197382bde0a3bc20215595d1c9ce20c6e341 ~ d8cfbb8723bd3d3222f360227a1cc15227189ca6 -
Linux Linux 5.7 -

II. Public POCs for CVE-2024-57940

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III. Intelligence Information for CVE-2024-57940

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Patches & Fixes for CVE-2024-57940 (6)

Same Patch Batch · Linux · 2025-01-21 · 25 CVEs total

CVE-2025-21663 10.0 CRITICAL net: stmmac: dwmac-tegra: Read iommu stream id from device tree
CVE-2024-57932 9.8 CRITICAL gve: guard XDP xmit NDO on existence of xdp queues
CVE-2024-57936 9.8 CRITICAL RDMA/bnxt_re: Fix max SGEs for the Work Request
CVE-2025-21659 8.1 HIGH netdev: prevent accessing NAPI instances from another namespace
CVE-2025-21664 7.8 HIGH dm thin: make get_first_thin use rcu-safe list first function
CVE-2025-21661 7.8 HIGH gpio: virtuser: fix missing lookup table cleanups
CVE-2024-57945 7.8 HIGH riscv: mm: Fix the out of bound issue of vmemmap address
CVE-2024-57944 iio: adc: ti-ads1298: Add NULL check in ads1298_init
CVE-2024-57946 virtio-blk: don't keep queue frozen during system suspend
CVE-2025-21662 net/mlx5: Fix variable not being completed when function returns
CVE-2025-21660 ksmbd: fix unexpectedly changed path in ksmbd_vfs_kern_path_locked
CVE-2025-21658 btrfs: avoid NULL pointer dereference if no valid extent tree
CVE-2025-21657 sched_ext: Replace rq_lock() to raw_spin_rq_lock() in scx_ops_bypass()
CVE-2025-21656 hwmon: (drivetemp) Fix driver producing garbage data when SCSI errors occur
CVE-2024-57930 tracing: Have process_string() also allow arrays
CVE-2024-57943 exfat: fix the new buffer was not zeroed before writing
CVE-2024-57942 netfs: Fix ceph copy to cache on write-begin
CVE-2024-57941 netfs: Fix the (non-)cancellation of copy when cache is temporarily disabled
CVE-2024-57939 riscv: Fix sleeping in invalid context in die()
CVE-2024-57938 net/sctp: Prevent autoclose integer overflow in sctp_association_init()

Showing top 20 of 25 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2024-57940

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