CVE-2025-27056
📋 TL;DR
This CVE describes a use-after-free vulnerability (CWE-416) in Qualcomm sub-system restart processes that can lead to memory corruption. Attackers could potentially exploit this to execute arbitrary code or cause denial of service. The vulnerability affects devices using Qualcomm chipsets with the vulnerable sub-system.
💻 Affected Systems
- Qualcomm chipsets with vulnerable sub-system
📦 What is this software?
Snapdragon 8 Gen 3 Mobile Firmware by Qualcomm
View all CVEs affecting Snapdragon 8 Gen 3 Mobile Firmware →
⚠️ Risk & Real-World Impact
Worst Case
Remote code execution with kernel privileges leading to complete system compromise
Likely Case
System crash or denial of service requiring device restart
If Mitigated
Limited impact with proper memory protections and exploit mitigations
🎯 Exploit Status
Exploitation requires triggering sub-system restart under specific conditions
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Refer to Qualcomm July 2025 security bulletin
Vendor Advisory: https://docs.qualcomm.com/product/publicresources/securitybulletin/july-2025-bulletin.html
Restart Required: Yes
Instructions:
1. Check Qualcomm advisory for specific patch details 2. Apply firmware updates from device manufacturer 3. Reboot device after update
🔧 Temporary Workarounds
Disable vulnerable sub-system
linuxIf possible, disable the affected sub-system to prevent exploitation
# System-specific commands would depend on device configuration
🧯 If You Can't Patch
- Implement strict access controls to prevent unauthorized system access
- Monitor system logs for unexpected sub-system restarts or crashes
🔍 How to Verify
Check if Vulnerable:
Check device firmware version against Qualcomm security bulletinCheck Version:
# cat /proc/version or device-specific firmware checkVerify Fix Applied:
Verify firmware version has been updated to patched version📡 Detection & Monitoring
Log Indicators:
- Unexpected sub-system restarts
- Memory corruption errors in kernel logs
- System crashes related to resource cleanup
Network Indicators:
- Unusual network traffic triggering system processes
SIEM Query:
search 'kernel panic' OR 'use-after-free' OR 'sub-system restart' in system logs