Use-after-free in Linux kernel - CVE-2023-53790
Published: December 10, 2025 / Updated: December 12, 2025
Vulnerability identifier: #VU119710
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-2023-53790
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 __alloc() function in kernel/bpf/memalloc.c. A local user can escalate privileges on the system.
Affected software
Linux kernel
How to mitigate CVE-2023-53790
Install update from vendor's repository.
Linux kernel - addressed in versions 6.1.16, 6.2.3, 6.3
External References
- https://git.kernel.org/stable/c/5d447e04290e78bdc1a3a6c321320d384e09c2f1
- https://git.kernel.org/stable/c/678ea18d6240299fd77d7000c8b1d7e5f274c8af
- https://git.kernel.org/stable/c/997849c4b969034e225153f41026657def66d286
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.1.16
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.2.3
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.3