CVE-2025-47396
📋 TL;DR
A memory corruption vulnerability occurs when launching secure applications on devices with insufficient memory, potentially allowing attackers to execute arbitrary code or cause denial of service. This affects devices running Qualcomm chipsets with vulnerable firmware. The vulnerability is particularly concerning for mobile devices and embedded systems with constrained memory resources.
💻 Affected Systems
- Qualcomm chipset-based devices
- Mobile devices with Qualcomm processors
- Embedded systems using Qualcomm platforms
📦 What is this software?
Snapdragon 4 Gen 2 Mobile Platform Firmware by Qualcomm
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Snapdragon 6 Gen 1 Mobile Platform Firmware by Qualcomm
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Snapdragon Ar1 Gen 1 Platform \"luna1\" Firmware by Qualcomm
View all CVEs affecting Snapdragon Ar1 Gen 1 Platform \"luna1\" Firmware →
Snapdragon Ar1 Gen 1 Platform Firmware by Qualcomm
View all CVEs affecting Snapdragon Ar1 Gen 1 Platform Firmware →
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
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⚠️ Risk & Real-World Impact
Worst Case
Remote code execution leading to complete device compromise, data theft, or persistent backdoor installation.
Likely Case
Application crashes, denial of service, or limited memory corruption affecting specific secure processes.
If Mitigated
Controlled crashes with minimal data loss when proper memory management and isolation controls are implemented.
🎯 Exploit Status
Exploitation requires specific conditions (insufficient memory during secure app launch) and may need local access or ability to trigger memory exhaustion.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Refer to Qualcomm January 2026 security bulletin for specific patched firmware versions.
Vendor Advisory: https://docs.qualcomm.com/product/publicresources/securitybulletin/january-2026-bulletin.html
Restart Required: Yes
Instructions:
1. Check Qualcomm advisory for affected chipset/firmware versions. 2. Obtain updated firmware from device manufacturer. 3. Apply firmware update following manufacturer instructions. 4. Reboot device to activate patched firmware.
🔧 Temporary Workarounds
Memory Management Controls
linuxImplement strict memory limits and monitoring to prevent memory exhaustion conditions.
# Set memory limits for critical processes
# Use cgroups on Linux: cgcreate -g memory:secure_apps
# Set limit: echo '100M' > /sys/fs/cgroup/memory/secure_apps/memory.limit_in_bytes
Secure Application Isolation
linuxIsolate secure applications in containers or virtual environments with dedicated memory resources.
# Use Docker with memory limits
docker run --memory=512m --memory-swap=512m secure_app_image
🧯 If You Can't Patch
- Implement strict memory monitoring and alerting for low memory conditions
- Restrict or disable non-essential secure applications on memory-constrained devices
🔍 How to Verify
Check if Vulnerable:
Check device firmware version against Qualcomm advisory. On Android: Settings > About phone > Build number. On embedded systems: check firmware version via manufacturer tools.Check Version:
# Android: getprop ro.build.version.security_patch
# Linux systems with Qualcomm: check /proc/device-tree/compatible or manufacturer-specific commandsVerify Fix Applied:
Verify firmware version matches patched version from Qualcomm bulletin. Test secure application launches under memory-constrained conditions.📡 Detection & Monitoring
Log Indicators:
- Memory allocation failures during secure app launches
- Application crashes with memory corruption errors
- Kernel panic or system instability after secure app execution
Network Indicators:
- Unusual process spawning patterns
- Abnormal memory consumption alerts
SIEM Query:
source="system_logs" AND ("memory allocation failed" OR "segmentation fault") AND process="secure_app*"