CVE-2024-49739
📋 TL;DR
This vulnerability in Android's memory management allows local attackers to write beyond allocated memory boundaries, potentially gaining elevated privileges on affected devices. It affects Android systems with vulnerable kernel components and requires no user interaction for exploitation.
💻 Affected Systems
- Android
📦 What is this software?
Android by Google
⚠️ Risk & Real-World Impact
Worst Case
Full device compromise with root privileges, allowing complete control over the system, data theft, and persistence mechanisms.
Likely Case
Local privilege escalation enabling unauthorized access to sensitive data and system functions, but limited to the specific device.
If Mitigated
Contained impact with proper SELinux policies and app sandboxing preventing lateral movement or network access.
🎯 Exploit Status
Requires local access and knowledge of kernel memory layout; no public exploits known as of advisory date.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: May 2025 Android Security Patch or later
Vendor Advisory: https://source.android.com/security/bulletin/2025-05-01
Restart Required: No
Instructions:
1. Check for system updates in Settings > System > System update. 2. Install May 2025 security patch or later. 3. Verify patch installation in Settings > About phone > Android security patch level.
🔧 Temporary Workarounds
Restrict app permissions
allLimit app permissions to minimum required functionality to reduce attack surface
🧯 If You Can't Patch
- Implement strict app vetting and only install apps from trusted sources
- Use mobile device management (MDM) solutions to enforce security policies and monitor for suspicious activity
🔍 How to Verify
Check if Vulnerable:
Check Android security patch level in Settings > About phone > Android security patch level. If date is before May 2025, device is vulnerable.Check Version:
adb shell getprop ro.build.version.security_patchVerify Fix Applied:
Verify Android security patch level shows May 2025 or later in Settings > About phone > Android security patch level.📡 Detection & Monitoring
Log Indicators:
- Kernel panic logs
- SELinux denials related to memory operations
- Unexpected privilege escalation attempts
Network Indicators:
- None - this is a local vulnerability
SIEM Query:
source="android_kernel" AND ("MMapVAccess" OR "pmr_os.c" OR "out of bounds write")