#VU106837 Improper error handling in Linux kernel - CVE-2025-21984
Published: April 2, 2025 / Updated: May 11, 2025
Vulnerability identifier: #VU106837
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-2025-21984
CWE-ID: CWE-388
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 error handling within the validate_dst_vma(), move_swap_pte(), move_pages_pte() and pte_to_swp_entry() functions in mm/userfaultfd.c. A local user can perform a denial of service (DoS) attack.
Remediation
Install update from vendor's website.
External links
- https://git.kernel.org/stable/c/4e9507246298fd6f1ca7bb42ef01a6e34fb93684
- https://git.kernel.org/stable/c/b1e11bd86c0943bb7624efebdc384340a50ad683
- https://git.kernel.org/stable/c/c50f8e6053b0503375c2975bf47f182445aebb4c
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.12.20
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.13.8
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.14