CVE-2024-40972

Advisory lineage Upstream: 0 Downstream: 22
Modified
Published: 12 Jul 2024, 12:32
Last modified:11 May 2026, 20:23

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

12 Jul 2024, 12:32
Published
Vulnerability first disclosed
11 May 2026, 20:23
Last Modified
Vulnerability information updated

Description

In the Linux kernel, the following vulnerability has been resolved: ext4: do not create EA inode under buffer lock ext4_xattr_set_entry() creates new EA inodes while holding buffer lock on the external xattr block. This is problematic as it nests all the allocation locking (which acquires locks on other buffers) under the buffer lock. This can even deadlock when the filesystem is corrupted and e.g. quota file is setup to contain xattr block as data block. Move the allocation of EA inode out of ext4_xattr_set_entry() into the callers.

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

    ≥ e50e5129f384ae282adebfb561189cdb19b81cee, < 0752e7fb549d90c33b4d4186f11cfd25a556d1dd | ≥ e50e5129f384ae282adebfb561189cdb19b81cee, < 737fb7853acd5bc8984f6f42e4bfba3334be8ae1 | ≥ e50e5129f384ae282adebfb561189cdb19b81cee, < 111103907234bffd0a34fba070ad9367de058752 | ≥ e50e5129f384ae282adebfb561189cdb19b81cee, < 0a46ef234756dca04623b7591e8ebb3440622f0b | 4.13

  • linux•linux_kernel

    < 6.1.107 | ≥ 6.2, < 6.6.47 | ≥ 6.7, < 6.9.7

References (5)