SB2024070448 - Improper locking in Linux kernel ext4
Published: July 4, 2024 Updated: May 13, 2025
Security Bulletin ID
SB2024070448
Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Improper locking (CVE-ID: CVE-2024-26601)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to improper locking within the ext4_mb_generate_buddy() and mb_free_blocks() functions in fs/ext4/mballoc.c. A local user can perform a denial of service (DoS) attack.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/78327acd4cdc4a1601af718b781eece577b6b7d4
- https://git.kernel.org/stable/c/ea42d6cffb0dd27a417f410b9d0011e9859328cb
- https://git.kernel.org/stable/c/6b0d48647935e4b8c7b75d1eccb9043fcd4ee581
- https://git.kernel.org/stable/c/c9b528c35795b711331ed36dc3dbee90d5812d4e
- https://git.kernel.org/stable/c/94ebf71bddbcd4ab1ce43ae32c6cb66396d2d51a
- https://git.kernel.org/stable/c/c1317822e2de80e78f137d3a2d99febab1b80326
- https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15.150