#VU116748 Use-after-free in Linux kernel - CVE-2023-53660
Published: October 8, 2025 / Updated: October 26, 2025
Vulnerability identifier: #VU116748
Vulnerability risk: Low
CVSSv4.0: 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/E:U/U:Clear
CVE-ID: CVE-2023-53660
CWE-ID: CWE-416
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 escalate privileges on the system.
The vulnerability exists due to a use-after-free error within the __cpu_map_ring_cleanup() function in kernel/bpf/cpumap.c. A local user can escalate privileges on the system.
Remediation
Install update from vendor's repository.
External links
- https://git.kernel.org/stable/c/7c62b75cd1a792e14b037fa4f61f9b18914e7de1
- https://git.kernel.org/stable/c/937345720d18f1ad006ba3d5dcb3fa121037b8a2
- https://git.kernel.org/stable/c/b58d34068fd9f96bfc7d389988dfaf9a92a8fe00
- https://git.kernel.org/stable/c/cbd000451885801e9bbfd9cf7a7946806a85cb5e
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.1.45