CVE-2025-21470
📋 TL;DR
This vulnerability allows memory corruption when processing image encoding with a NULL configuration parameter in an IOCTL call. It affects Qualcomm devices and components that use the vulnerable image processing functionality. Attackers could potentially execute arbitrary code or cause denial of service.
💻 Affected Systems
- Qualcomm chipsets and components with image processing capabilities
📦 What is this software?
Snapdragon 7c\+ Gen 3 Compute Firmware by Qualcomm
View all CVEs affecting Snapdragon 7c\+ Gen 3 Compute Firmware →
⚠️ Risk & Real-World Impact
Worst Case
Remote code execution leading to full system compromise, data theft, or persistent backdoor installation.
Likely Case
Local privilege escalation or denial of service affecting device stability.
If Mitigated
Limited impact with proper memory protections and exploit mitigations in place.
🎯 Exploit Status
Exploitation requires local access or ability to trigger the vulnerable IOCTL; memory corruption vulnerabilities often lead to privilege escalation
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Check Qualcomm security bulletin for specific patched versions
Vendor Advisory: https://docs.qualcomm.com/product/publicresources/securitybulletin/may-2025-bulletin.html
Restart Required: Yes
Instructions:
1. Check Qualcomm advisory for affected components. 2. Obtain firmware/software updates from device manufacturer. 3. Apply updates following manufacturer instructions. 4. Reboot device to activate fixes.
🔧 Temporary Workarounds
Restrict IOCTL access
linuxLimit access to vulnerable IOCTL interfaces through SELinux/AppArmor policies or kernel module restrictions
# Example: Add SELinux policy to restrict ioctl access
# Requires custom policy development based on specific device
🧯 If You Can't Patch
- Implement strict application sandboxing to limit impact of potential exploitation
- Deploy runtime memory protection solutions (ASLR, DEP) if not already enabled
🔍 How to Verify
Check if Vulnerable:
Check device firmware version against Qualcomm advisory; examine kernel/driver versions for vulnerable componentsCheck Version:
# Android: getprop ro.build.fingerprint
# Linux: uname -a and check driver versionsVerify Fix Applied:
Verify updated firmware version matches patched versions in Qualcomm advisory; test image processing functionality📡 Detection & Monitoring
Log Indicators:
- Kernel panic logs
- Driver crash messages
- Unexpected process termination in image processing services
Network Indicators:
- Unusual local process communication patterns
SIEM Query:
Process:Image AND (EventID:1000 OR EventID:1001) AND CommandLine:*ioctl*