CVE-2025-48502
📋 TL;DR
This vulnerability in AMD uprof allows a local attacker to overwrite Model-Specific Registers (MSRs) due to improper input validation. This could lead to system crashes or denial of service. It affects systems running vulnerable versions of AMD uprof software.
💻 Affected Systems
- AMD uprof
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete system crash requiring hard reboot, potential data loss from interrupted operations, and persistent denial of service until system is restored.
Likely Case
System instability leading to application crashes or temporary denial of service, requiring system restart to recover normal operation.
If Mitigated
Limited impact with proper access controls preventing unauthorized local execution, resulting in no successful exploitation.
🎯 Exploit Status
Exploitation requires local access and knowledge of how to craft malicious input to trigger the MSR overwrite. No public exploit code is currently known.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Check AMD advisory for specific patched versions
Vendor Advisory: https://www.amd.com/en/resources/product-security/bulletin/AMD-SB-9019.html
Restart Required: Yes
Instructions:
1. Review AMD advisory AMD-SB-9019. 2. Identify affected uprof version. 3. Download and apply the latest patched version from AMD. 4. Restart the system to ensure changes take effect.
🔧 Temporary Workarounds
Restrict uprof execution
linuxLimit execution of uprof to trusted users only through file permissions or access controls.
chmod 750 /path/to/uprof
setfacl -m u:trusteduser:rx /path/to/uprof
Remove or disable uprof
linuxIf uprof is not required for system operation, uninstall or disable it completely.
sudo apt remove amd-uprof
sudo yum remove amd-uprof
🧯 If You Can't Patch
- Implement strict access controls to limit who can execute uprof on the system.
- Monitor system logs for unusual uprof execution patterns or system crashes that might indicate exploitation attempts.
🔍 How to Verify
Check if Vulnerable:
Check installed uprof version against AMD advisory. Run: uprof --version or check package manager.Check Version:
uprof --versionVerify Fix Applied:
Verify uprof version matches patched version from AMD advisory after update. Confirm system stability during normal uprof operations.📡 Detection & Monitoring
Log Indicators:
- Unexpected system crashes or reboots
- Unusual uprof process execution patterns
- Kernel panic logs related to MSR access
Network Indicators:
- None - this is a local vulnerability
SIEM Query:
Process execution where process_name contains 'uprof' by non-privileged users OR System events where event_type='crash' AND process_name='uprof'