Use-after-free in Linux kernel - CVE-2023-54200
Published: December 30, 2025 / Updated: December 31, 2025
Vulnerability identifier: #VU120721
CSH Severity: Low
CVSS v4: 8.5 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2023-54200
CWE-ID: CWE-416
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a use-after-free error within the nft_netdev_event() and nf_tables_netdev_event() functions in net/netfilter/nft_chain_filter.c. A local user can escalate privileges on the system.
Affected software
Linux kernel
How to mitigate CVE-2023-54200
Install update from vendor's repository.
Linux kernel - addressed in versions 5.15.113, 6.1.30, 6.3.4, 6.4
External References
- https://git.kernel.org/stable/c/30e4b13b1bfbdf3bf3b27036d8209ea1b9f0d880
- https://git.kernel.org/stable/c/8d56f00c61f67b450fbbdcb874855e60ad92c560
- https://git.kernel.org/stable/c/94032527efbac13be702c76afb9d872c0cca7a43
- https://git.kernel.org/stable/c/dc1c9fd4a8bbe1e06add9053010b652449bfe411
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15.113
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.1.30
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.3.4
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.4