#VU119294 Use-after-free in Linux kernel - CVE-2023-53747
Published: December 8, 2025 / Updated: December 12, 2025
Vulnerability identifier: #VU119294
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-2023-53747
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 vcs_write() function in drivers/tty/vt/vc_screen.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/0deff678157333d775af190f84696336cdcccd6d
- https://git.kernel.org/stable/c/11dddfbb7a4e62489b01074d6c04d9d1b42e4047
- https://git.kernel.org/stable/c/1de42e7653d6714a7507ba6696151a1fa028c69f
- https://git.kernel.org/stable/c/3338d0b9acde770ee588eead5cac32c25e7048fc
- https://git.kernel.org/stable/c/8fb9ea65c9d1338b0d2bb0a9122dc942cdd32357
- https://git.kernel.org/stable/c/934de9a9b659785fed3e820bc0c813a460c71fea
- https://git.kernel.org/stable/c/a4e3c4c65ae8510e01352c9a4347e05c035b2ce2
- https://git.kernel.org/stable/c/e3d1adcad5b73c7ed0c7edb35ab68abcaa45cf67
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15.113