CVE-2015-9187
📋 TL;DR
This vulnerability allows attackers to access secure memory regions on affected Qualcomm Snapdragon chipsets due to insufficient buffer length validation in the pvr_cmd_handler function. It affects Android devices with specific Qualcomm processors before the April 2018 security patch. Attackers could potentially execute arbitrary code or access sensitive information.
💻 Affected Systems
- Android devices with Qualcomm Snapdragon Automobile, Mobile, and Wear chipsets
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete device compromise allowing execution of arbitrary code with kernel privileges, leading to data theft, persistent backdoor installation, or device bricking.
Likely Case
Privilege escalation allowing access to protected memory regions, potentially exposing sensitive data or enabling further exploitation.
If Mitigated
No impact if patched with April 2018 security update or later, or if device uses unaffected hardware.
🎯 Exploit Status
Requires local access to device but no authentication. Exploitation involves buffer manipulation to access secure memory regions.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: April 2018 Android security patch level or later
Vendor Advisory: https://source.android.com/security/bulletin/2018-04-01
Restart Required: Yes
Instructions:
1. Check for Android system updates in device settings. 2. Install April 2018 or later security patch. 3. Restart device after installation. 4. Verify patch installation in About Phone settings.
🔧 Temporary Workarounds
Disable unnecessary services
androidReduce attack surface by disabling unused device features and services
🧯 If You Can't Patch
- Isolate affected devices from untrusted networks
- Implement strict access controls and monitoring for affected devices
🔍 How to Verify
Check if Vulnerable:
Check Android security patch level in Settings > About Phone > Android Security Patch Level. If date is before April 2018, device is vulnerable.Check Version:
adb shell getprop ro.build.version.security_patchVerify Fix Applied:
Verify Android Security Patch Level shows April 2018 or later date📡 Detection & Monitoring
Log Indicators:
- Kernel panic logs
- Memory access violation errors
- Unusual pvr_cmd_handler activity
Network Indicators:
- Unusual outbound connections from affected devices
SIEM Query:
Device logs showing security patch level before 2018-04-05 AND Qualcomm chipset in affected list