#VU93768 Improper locking in Linux kernel - CVE-2023-52681
Published: July 4, 2024 / Updated: May 13, 2025
Vulnerability identifier: #VU93768
Vulnerability risk: Low
CVSSv4.0: 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-2023-52681
CWE-ID: CWE-667
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerable software:
Linux kernel
Linux kernel
Software vendor:
Linux Foundation
Linux Foundation
Description
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to improper locking within the efivarfs_init_fs_context() function in fs/efivarfs/super.c. A local user can perform a denial of service (DoS) attack.
Remediation
Install update from vendor's website.
External links
- https://git.kernel.org/stable/c/ea6b597fcaca99562fa56a473bcbbbd79b40af03
- https://git.kernel.org/stable/c/48be1364dd387e375e1274b76af986cb8747be2c
- https://git.kernel.org/stable/c/92be3095c6ca1cdc46237839c6087555be9160e3
- https://git.kernel.org/stable/c/547713d502f7b4b8efccd409cff84d731a23853b
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.1.75
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.6.14
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.7.2
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.8