SB2022101981 - Denial of service in Linux kernel KVM SEV API
Published: October 19, 2022
Security Bulletin ID
SB2022101981
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) Incomplete cleanup (CVE-ID: CVE-2022-0171)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to incomplete cleanup in KVM SEV API. A local non-root (host) user-level application can crash the host kernel by creating a confidential guest VM instance in AMD CPU that supports Secure Encrypted Virtualization (SEV).
Remediation
Install update from vendor's website.