CVE-2025-47388
📋 TL;DR
This CVE describes a memory corruption vulnerability in Qualcomm DSP (Digital Signal Processor) drivers where passing memory pages with unaligned starting addresses can cause buffer overflow conditions. This affects devices using Qualcomm chipsets with vulnerable DSP firmware/drivers. Attackers could potentially execute arbitrary code with kernel privileges.
💻 Affected Systems
- Qualcomm Snapdragon mobile platforms
- Qualcomm automotive platforms
- Qualcomm IoT platforms
📦 What is this software?
Snapdragon 4 Gen 2 Mobile Platform Firmware by Qualcomm
View all CVEs affecting Snapdragon 4 Gen 2 Mobile Platform Firmware →
Snapdragon 6 Gen 1 Mobile Platform Firmware by Qualcomm
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Snapdragon W5\+ Gen 1 Wearable Platform Firmware by Qualcomm
View all CVEs affecting Snapdragon W5\+ Gen 1 Wearable Platform Firmware →
Video Collaboration Vc1 Platform Firmware by Qualcomm
View all CVEs affecting Video Collaboration Vc1 Platform Firmware →
⚠️ Risk & Real-World Impact
Worst Case
Full device compromise allowing kernel-level arbitrary code execution, potentially leading to persistent backdoor installation, data theft, or device bricking.
Likely Case
Local privilege escalation from user to kernel space, allowing attackers to bypass security controls and gain elevated system access.
If Mitigated
Limited impact with proper memory protection mechanisms and SELinux/app sandboxing in place, potentially causing only denial of service.
🎯 Exploit Status
Requires local access to trigger the memory corruption. Exploitation likely requires bypassing additional security mitigations like ASLR and stack canaries.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Refer to Qualcomm January 2026 security bulletin for specific patch versions
Vendor Advisory: https://docs.qualcomm.com/product/publicresources/securitybulletin/january-2026-bulletin.html
Restart Required: Yes
Instructions:
1. Check Qualcomm security bulletin for your specific chipset/platform. 2. Obtain updated firmware/driver from device manufacturer. 3. Apply update following manufacturer instructions. 4. Reboot device to activate fixes.
🔧 Temporary Workarounds
Disable DSP functionality
linuxDisable Digital Signal Processor features if not required for device operation
# Platform-specific - consult device manufacturer documentation
Memory protection hardening
linuxEnable strict memory protection mechanisms and SELinux policies
setenforce 1
# Configure strict SELinux policies for DSP services
🧯 If You Can't Patch
- Implement strict access controls to limit local user privileges
- Monitor for unusual DSP service activity and memory corruption patterns
🔍 How to Verify
Check if Vulnerable:
Check device chipset model and firmware version against Qualcomm's affected products list in the security bulletinCheck Version:
cat /proc/cpuinfo | grep -i qualcomm && dmesg | grep -i dspVerify Fix Applied:
Verify firmware/driver version has been updated to patched version specified in Qualcomm advisory📡 Detection & Monitoring
Log Indicators:
- Kernel panic logs
- DSP service crashes
- Memory corruption warnings in dmesg/kernel logs
Network Indicators:
- None - local vulnerability only
SIEM Query:
source="kernel" AND ("DSP" OR "memory corruption" OR "unaligned address")