Vulnerability 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 Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | < 6.1.107 |
Related Weaknesses (CWE)
References
- https://git.kernel.org/stable/c/0752e7fb549d90c33b4d4186f11cfd25a556d1ddPatch
- https://git.kernel.org/stable/c/0a46ef234756dca04623b7591e8ebb3440622f0bPatch
- https://git.kernel.org/stable/c/111103907234bffd0a34fba070ad9367de058752Patch
- https://git.kernel.org/stable/c/737fb7853acd5bc8984f6f42e4bfba3334be8ae1Patch
- https://git.kernel.org/stable/c/0a46ef234756dca04623b7591e8ebb3440622f0bPatch
- https://git.kernel.org/stable/c/111103907234bffd0a34fba070ad9367de058752Patch
- https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html
FAQ
What is CVE-2024-40972?
CVE-2024-40972 is a vulnerability with a CVSS score of 5.5 (MEDIUM). 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 exter...
How severe is CVE-2024-40972?
CVE-2024-40972 has been rated MEDIUM with a CVSS base score of 5.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2024-40972?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel.