SB20251008114 - Reachable assertion in Linux kernel kvm svm
Published: October 8, 2025 Updated: October 26, 2025
Security Bulletin ID
SB20251008114
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) Reachable assertion (CVE-ID: CVE-2023-53663)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to reachable assertion within the nested_vmcb02_prepare_control() function in arch/x86/kvm/svm/nested.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/02b24270568f65dd607c4a848512dc8055b4491b
- https://git.kernel.org/stable/c/6c1ecfea1daf6e75c46e295aad99dfbafd878897
- https://git.kernel.org/stable/c/7cafe9b8e22bb3d77f130c461aedf6868c4aaf58
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.1.54
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.5.4
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.6