CVE-2024-40972

CVE Details

Release Date:	2024-07-12
Impact:	Moderate	What is this?

Description

In the Linux kernel, the following vulnerability has been resolved:\next4: do not create EA inode under buffer lock\next4_xattr_set_entry() creates new EA inodes while holding buffer lock\non the external xattr block. This is problematic as it nests all the\nallocation locking (which acquires locks on other buffers) under the\nbuffer lock. This can even deadlock when the filesystem is corrupted and\ne.g. quota file is setup to contain xattr block as data block. Move the\nallocation of EA inode out of ext4_xattr_set_entry() into the callers.

See more information about CVE-2024-40972 from MITRE CVE dictionary and NIST NVD

NOTE: The following CVSS metrics and score provided are preliminary and subject to review.

CVSS v3 metrics

Base Score:	4.1
Vector String:	CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:H
Version:	3.1
Attack Vector:	Local
Attack Complexity:	High
Privileges Required:	High
User Interaction:	None
Scope:	Unchanged
Confidentiality Impact:	None
Integrity Impact:	None
Availability Impact:	High

Errata information

Platform	Errata	Release Date
Oracle Linux version 8 (kernel)	ELSA-2024-7000	2024-09-24
Oracle Linux version 9 (kernel)	ELSA-2024-8617	2024-10-30