SB20251226268 - Input validation error in Linux kernel arm64 mm
Published: December 26, 2025 Updated: December 31, 2025
Security Bulletin ID
SB20251226268
Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Input validation error (CVE-ID: CVE-2023-53989)
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 website.
References
- 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