#VU120526 Input validation error in Linux kernel - CVE-2023-53989
Published: December 26, 2025 / Updated: December 31, 2025
Vulnerability identifier: #VU120526
Vulnerability risk: Low
CVSSv4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2023-53989
CWE-ID: CWE-20
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 perform a denial of service (DoS) attack.
The vulnerability exists due to improper input validation within the pgd_pgtable_alloc() and create_pgd_mapping() functions in arch/arm64/mm/mmu.c. A local user can perform a denial of service (DoS) attack.
Remediation
Install update from vendor's repository.
External links
- https://git.kernel.org/stable/c/32020fc2a8373d3de35ae6d029d5969a42651e7a
- https://git.kernel.org/stable/c/621619f626cbe702ddbdc54117f3868b8ebd8129
- https://git.kernel.org/stable/c/9d8d3df71516ec3236d8d93ff029d251377ba4b1
- https://git.kernel.org/stable/c/ab9b4008092c86dc12497af155a0901cc1156999
- https://git.kernel.org/stable/c/b03c7fcc5ed854d0e1b27e9abf12428bfa751a37
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.4.7