SB20250916403 - Fedora 43 update for kernel, kernel-headers
Published: September 16, 2025
Security Bulletin ID
SB20250916403
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-2025-40300)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to improper input validation within the vcpu_enter_guest() function in arch/x86/kvm/x86.c. A local user can perform a denial of service (DoS) attack.
Remediation
Install update from vendor's website.