#VU120516 Improper locking in Linux kernel - CVE-2023-53990
Published: December 26, 2025 / Updated: December 31, 2025
Vulnerability identifier: #VU120516
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-2023-53990
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 cifs_close_deferred_file(), cifs_close_all_deferred_files() and cifs_close_deferred_file_under_dentry() functions in fs/cifs/misc.c. A local user can perform a denial of service (DoS) attack.
Remediation
Install update from vendor's repository.
External links
- https://git.kernel.org/stable/c/0f87e18203bd30f71eb1a65259e28e291b6cc43a
- https://git.kernel.org/stable/c/32a046ccaeea6c19965c04a4c521e703f6607924
- https://git.kernel.org/stable/c/3aa9d065b0685b4e6052f3f2a2462966fdc44fd2
- https://git.kernel.org/stable/c/ab9ddc87a9055c4bebd6524d5d761d605d52e557
- https://git.kernel.org/stable/c/cb36365dac25d546ca4af0eb22acb43c9b4ddfdf
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.2.15