SB20250402100 - Improper error handling in Linux kernel mm
Published: April 2, 2025 Updated: May 11, 2025
Security Bulletin ID
SB20250402100
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) Improper error handling (CVE-ID: CVE-2025-21984)
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.
References
- 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