SB2025061151 - Ubuntu update for amd64-microcode
Published: June 11, 2025
Security Bulletin ID
SB2025061151
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) Improper Verification of Cryptographic Signature (CVE-ID: CVE-2024-56161)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to improper verification of cryptographic signature in AMD CPU ROM microcode patch loader. A local privileged user can load a malicious CPU microcode and escalate privileges on the system.
Remediation
Install update from vendor's website.