Use-after-free in Linux kernel - CVE-2023-54257
Published: December 30, 2025 / Updated: December 31, 2025
Vulnerability identifier: #VU120711
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-2023-54257
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 macb_get_addr() function in drivers/net/ethernet/cadence/macb_main.c. A local user can escalate privileges on the system.
Affected software
Linux kernel
How to mitigate CVE-2023-54257
Install update from vendor's repository.
Linux kernel - addressed in versions 4.14.313, 4.19.281, 5.4.241, 5.10.178, 5.15.108, 6.1.25, 6.2.12, 6.3
External References
- https://git.kernel.org/stable/c/1bec9da233f779e7b6954ee07ad7e6d8f2a4dd83
- https://git.kernel.org/stable/c/5dcf3a6843d0d7cc76960fbe8511d425f217744c
- https://git.kernel.org/stable/c/7169d1638824c4bf7e0fe0baad381ddec861fa70
- https://git.kernel.org/stable/c/7ccc58a1a75601c936069d4a0741940623990ade
- https://git.kernel.org/stable/c/82e626af24683e01211abe66cec27a387f8f17c9
- https://git.kernel.org/stable/c/9412a9bf5952cdf5d0f736cc1e8c68fd366c2d47
- https://git.kernel.org/stable/c/dd7a49a3eaf723a01b2fdf153f98450a82b0b0fe
- https://git.kernel.org/stable/c/e8b74453555872851bdd7ea43a7c0ec39659834f
- https://mirrors.edge.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.313
- https://mirrors.edge.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.19.281
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.178
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15.108
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.4.241
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.1.25
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.2.12
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.3