Improper locking in Linux kernel - CVE-2024-46840
Published: September 30, 2024 / Updated: May 12, 2025
Vulnerability identifier: #VU97808
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2024-46840
CWE-ID: CWE-667
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vendor: Linux Foundation
Affected software:
Linux kernel
Linux kernel
Detailed vulnerability description
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to improper locking within the reada_walk_down(), walk_down_proc(), do_walk_down() and walk_up_proc() functions in fs/btrfs/extent-tree.c. A local user can perform a denial of service (DoS) attack.
How to mitigate CVE-2024-46840
Install update from vendor's website.
Sources
- https://git.kernel.org/stable/c/c847b28a799733b04574060ab9d00f215970627d
- https://git.kernel.org/stable/c/71291aa7246645ef622621934d2067400380645e
- https://git.kernel.org/stable/c/c60676b81fab456b672796830f6d8057058f029c
- https://git.kernel.org/stable/c/728d4d045b628e006b48a448f3326a7194c88d32
- https://git.kernel.org/stable/c/9cc887ac24b7a0598f4042ae9af6b9a33072f75b
- https://git.kernel.org/stable/c/7d1df13bf078ffebfedd361d714ff6cee1ff01b9
- https://git.kernel.org/stable/c/03804641ec2d0da4fa088ad21c88e703d151ce16
- https://git.kernel.org/stable/c/b8ccef048354074a548f108e51d0557d6adfd3a3
- https://mirrors.edge.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.19.322
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.226
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15.167
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.4.284
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.1.110
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.10.10
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.11
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.6.51