#VU116512 Use-after-free in Linux kernel - CVE-2023-53559
Published: October 4, 2025 / Updated: October 27, 2025
Vulnerability identifier: #VU116512
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-2023-53559
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 vti_tunnel_xmit() function in net/ipv4/ip_vti.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/0b4d69539fdea138af2befe08893850c89248068
- https://git.kernel.org/stable/c/2b05bf5dc437f7891dd409a3eaf5058459391c7a
- https://git.kernel.org/stable/c/6018a266279b1a75143c7c0804dd08a5fc4c3e0b
- https://git.kernel.org/stable/c/78e397a43e1c47321a4679cc49a6c4530bf820b9
- https://git.kernel.org/stable/c/7dfe23659f3677c08a60a0056cda2d91a79c15ca
- https://git.kernel.org/stable/c/82fb41c5de243e7dfa90f32ca58e35adaff56c1d
- https://git.kernel.org/stable/c/d34c30442d5e53a33cde79ca163320dbe2432cbd
- https://git.kernel.org/stable/c/e1e04cc2ef2c0c0866c19f5627149a76c2baae32
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15.128