CVE-2024-40972

MEDIUM EPSS 12.5%
Published Jul 12, 20241y ago · Modified Jun 17, 20261w ago
5.5 CVSS 3.1
Medium
Find Similar
Published Jul 12, 2024 1y ago
Last Modified Jun 17, 2026 1w ago

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 Details

Base Score
5.5
Exploitability
1.8
Impact
3.6
Vector string
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Attack Vector Local
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality None
Integrity None
Availability High

Threat Intelligence

EPSS Exploit Probability
12.5% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Weaknesses 1

CWE-667

Affected Products 3

VendorProductVersionRange
linuxlinux_kernel* <6.1.107
linuxlinux_kernel*≥6.2  –  <6.6.47
linuxlinux_kernel*≥6.7  –  <6.9.7

References 5

  • git.kernel.org https://git.kernel.org/stable/c/0752e7fb549d90c33b4d4186f11cfd25a556d1dd
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/0a46ef234756dca04623b7591e8ebb3440622f0b
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/111103907234bffd0a34fba070ad9367de058752
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/737fb7853acd5bc8984f6f42e4bfba3334be8ae1
    Patch
  • lists.debian.org https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html

Remediation

  • git.kernel.org https://git.kernel.org/stable/c/0752e7fb549d90c33b4d4186f11cfd25a556d1dd
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/0a46ef234756dca04623b7591e8ebb3440622f0b
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/111103907234bffd0a34fba070ad9367de058752
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/737fb7853acd5bc8984f6f42e4bfba3334be8ae1
    Patch