CVE-2015-9149
📋 TL;DR
This vulnerability allows local attackers to execute arbitrary code with kernel privileges on affected Android devices by exploiting an untrusted pointer dereference in a DIAG ioctl handler. It affects Android devices with Qualcomm Snapdragon chipsets before the April 2018 security patch. The high CVSS score reflects the potential for complete system compromise.
💻 Affected Systems
- Android devices with Qualcomm Snapdragon chipsets
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete device compromise allowing attacker to install persistent malware, access all user data, and use device as part of botnet.
Likely Case
Local privilege escalation allowing malware to gain kernel-level access and bypass security controls.
If Mitigated
Limited impact if device is fully patched and has additional security controls like verified boot.
🎯 Exploit Status
Requires local access and ability to execute code; DIAG ioctl handler vulnerabilities typically require understanding of Qualcomm diagnostic interfaces
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Android security patch level 2018-04-05 or later
Vendor Advisory: https://source.android.com/security/bulletin/2018-04-01
Restart Required: Yes
Instructions:
1. Check current Android security patch level in Settings > About phone > Android security patch level. 2. If before April 2018, update device through Settings > System > System update. 3. For enterprise devices, push updates through MDM solution. 4. Restart device after update.
🔧 Temporary Workarounds
Disable DIAG services
androidDisable Qualcomm diagnostic services if not needed for device functionality
adb shell pm disable com.qualcomm.qti.diagservices
adb shell setprop persist.vendor.sys.usb.config mtp,adb
🧯 If You Can't Patch
- Isolate affected devices from critical networks and sensitive data
- Implement application allowlisting to prevent malicious apps from exploiting local vulnerabilities
🔍 How to Verify
Check if Vulnerable:
Check Android security patch level: Settings > About phone > Android security patch level. If date is before 2018-04-05, device is vulnerable.Check Version:
adb shell getprop ro.build.version.security_patchVerify Fix Applied:
Verify security patch level shows 2018-04-05 or later date. Check that DIAG services are disabled if workaround applied.📡 Detection & Monitoring
Log Indicators:
- Kernel panic logs
- Unexpected DIAG service activity
- Privilege escalation attempts in audit logs
Network Indicators:
- Unusual diagnostic traffic to/from devices
- Suspicious USB debugging connections
SIEM Query:
source="android_logs" AND ("kernel panic" OR "diag" OR "ioctl") AND severity=HIGH