CVE-2019-14099
📋 TL;DR
This CVE describes a buffer copy without checking size of input vulnerability in Qualcomm Snapdragon chipsets. It allows attackers to cause device misbehavior by passing incorrect offset, length, or number of buffers from user space. Affected devices include various Snapdragon platforms in automotive, mobile, IoT, and wearable products.
💻 Affected Systems
- Snapdragon Auto
- Snapdragon Compute
- Snapdragon Consumer IOT
- Snapdragon Industrial IOT
- Snapdragon Mobile
- Snapdragon Voice & Music
- Snapdragon Wearables
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Remote code execution leading to complete device compromise, data theft, or persistent backdoor installation.
Likely Case
Denial of service causing device crashes, instability, or performance degradation.
If Mitigated
Limited impact with proper input validation and memory protections in place.
🎯 Exploit Status
Requires local access or ability to execute code on the device. No public exploit code available.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Refer to Qualcomm July 2020 security bulletin for specific chipset updates
Vendor Advisory: https://www.qualcomm.com/company/product-security/bulletins/july-2020-bulletin
Restart Required: Yes
Instructions:
1. Check device manufacturer for firmware updates. 2. Apply Qualcomm-provided patches through OEM updates. 3. Reboot device after update installation.
🔧 Temporary Workarounds
Input validation hardening
allImplement strict input validation for buffer operations in affected drivers
🧯 If You Can't Patch
- Restrict physical access to vulnerable devices
- Implement application whitelisting to prevent unauthorized code execution
🔍 How to Verify
Check if Vulnerable:
Check device chipset model and firmware version against affected listCheck Version:
adb shell getprop ro.build.fingerprint (for Android devices)Verify Fix Applied:
Verify firmware version has been updated to post-July 2020 security patch level📡 Detection & Monitoring
Log Indicators:
- Kernel panic logs
- Driver crash reports
- Memory corruption warnings
Network Indicators:
- Unusual device behavior patterns
- Unexpected reboots
SIEM Query:
Device logs containing 'kernel panic' or 'segmentation fault' from affected chipset devices