CVE-2024-42315

Advisory lineage Upstream: 0 Downstream: 31
Modified
Published: 17 Aug 2024, 09:09
Last modified:23 May 2026, 15:52

Vulnerability Summary

Overall Risk (default)
low
22/100
CVSS Score
5.5 MEDIUM
v3.1 (nvd)
EPSS Score
0.01% LOW
0% probability 0.00%
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

17 Aug 2024, 09:09
Published
Vulnerability first disclosed
23 May 2026, 15:52
Last Modified
Vulnerability information updated

Description

In the Linux kernel, the following vulnerability has been resolved: exfat: fix potential deadlock on __exfat_get_dentry_set When accessing a file with more entries than ES_MAX_ENTRY_NUM, the bh-array is allocated in __exfat_get_entry_set. The problem is that the bh-array is allocated with GFP_KERNEL. It does not make sense. In the following cases, a deadlock for sbi->s_lock between the two processes may occur. CPU0 CPU1 ---- ---- kswapd balance_pgdat lock(fs_reclaim) exfat_iterate lock(&sbi->s_lock) exfat_readdir exfat_get_uniname_from_ext_entry exfat_get_dentry_set __exfat_get_dentry_set kmalloc_array ... lock(fs_reclaim) ... evict exfat_evict_inode lock(&sbi->s_lock) To fix this, let's allocate bh-array with GFP_NOFS.

CVSS Metrics

  • v3.1•MEDIUM•Score: 5.5CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

EPSS Trends

Current EPSS score: 0.01%• Percentile: 1%

Techniques & Countermeasures

  • CWE-667•Improper Locking

    The product does not properly acquire or release a lock on a resource, leading to unexpected resource state changes and behaviors.

Affected Systems

  • linux•linux

    ≥ bd3bdb9e0d656f760b11d0c638d35d7f7068144d, < 632fb232b6bbf8277edcbe9ecd4b4d98ecb122eb | ≥ 92dcd7d6c6068bf4fd35a6f64d606e27d634807e, < c052f775ee6ccacd3c97e4cf41a2a657e63d4259 | ≥ d8fe01ad2d8ab33aaf8f2efad9e8f1dae11c4b0c, < cd1c7858641384191ff7033fb1fc65dfcd559c6f | ≥ a3ff29a95fde16906304455aa8c0bd84eb770258, < a7ac198f8dba791e3144c4da48a5a9b95773ee4b | ≥ a3ff29a95fde16906304455aa8c0bd84eb770258, < 1d1970493c289e3f44b9ec847ed26a5dbdf56a62 | ≥ a3ff29a95fde16906304455aa8c0bd84eb770258, < 89fc548767a2155231128cb98726d6d2ea1256c9 | ≥ 5.10.190, < 5.10.232 | ≥ 5.15.150, < 5.15.175 | 6.2

  • linux•linux_kernel

    ≥ 6.2, < 6.6.44 | ≥ 6.7, < 6.10.3

References (8)