SB2023022178 - Cross-thread return address predictions in Xen on some AMD CPUs
Published: February 21, 2023
Security Bulletin ID
SB2023022178
Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Information disclosure
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Cross-thread return address predictions (CVE-ID: CVE-2022-27672)
The vulnerability allows a local user to gain access to sensitive information.
The vulnerability exists due to certain AMD processors may speculatively execute instructions at an incorrect return site after an SMT mode switch that may potentially lead to information disclosure.
Remediation
Install update from vendor's website.