SB2023042436 - Privilege escalation in Linux kernel nVMX
Published: April 24, 2023
Security Bulletin ID
SB2023042436
Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Code execution
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Input validation error (CVE-ID: CVE-2023-30456)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to insufficient validation of consistency for for CR0 and CR4 in arch/x86/kvm/vmx/nested.c in the Linux kernel. A local user can execute arbitrary code with elevated privileges.
Remediation
Install update from vendor's website.