#VU116557 Improper locking in Linux kernel - CVE-2023-53581
Published: October 5, 2025 / Updated: October 27, 2025
Vulnerability identifier: #VU116557
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-2023-53581
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 remove_unready_flow() and mlx5e_tc_del_fdb_flow() functions in drivers/net/ethernet/mellanox/mlx5/core/en_tc.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/30c281a77fb1b2d362030ea243dd663201d62a21
- https://git.kernel.org/stable/c/65e64640e97c0f223e77f9ea69b5a46186b93470
- https://git.kernel.org/stable/c/82ac62d76a000871004f534ad294e763e966d3b0
- https://git.kernel.org/stable/c/e962fd5933ebc767ce2a1cf7b7c85035b5a5d04c
- https://git.kernel.org/stable/c/f7ceedd1d124217a67ed1a67bbd7a7b1288705e3
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.4.5