CVE-2024-53837
📋 TL;DR
This CVE describes an integer overflow vulnerability in the Android kernel's lwis_periodic_io.c file that allows local privilege escalation without user interaction. Attackers can exploit this out-of-bounds write to gain elevated privileges on affected devices. This primarily affects Google Pixel devices running vulnerable Android versions.
💻 Affected Systems
- Google Pixel devices
📦 What is this software?
Android by Google
⚠️ Risk & Real-World Impact
Worst Case
Full device compromise with root/system-level access, allowing installation of persistent malware, data theft, and complete control over the device.
Likely Case
Local privilege escalation allowing attackers to bypass application sandboxes, access sensitive data, and install malicious applications with elevated permissions.
If Mitigated
Limited impact if devices are fully patched and have additional security controls like SELinux enforcement and verified boot.
🎯 Exploit Status
Requires local access to the device; no user interaction needed for exploitation once access is obtained.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: December 2024 Android security patch level or later
Vendor Advisory: https://source.android.com/security/bulletin/pixel/2024-12-01
Restart Required: Yes
Instructions:
1. Check for system updates in Settings > System > System update. 2. Install the December 2024 security patch. 3. Reboot the device after installation completes.
🔧 Temporary Workarounds
No effective workarounds
allThis is a kernel-level vulnerability that requires patching; no configuration changes can mitigate it.
🧯 If You Can't Patch
- Restrict physical access to devices and implement strict app installation policies
- Monitor for suspicious privilege escalation attempts using security monitoring tools
🔍 How to Verify
Check if Vulnerable:
Check Settings > About phone > Android version > Android security update level. If before December 2024, device is vulnerable.Check Version:
adb shell getprop ro.build.version.security_patchVerify Fix Applied:
Verify Android security update level shows December 2024 or later after applying the patch.📡 Detection & Monitoring
Log Indicators:
- Kernel panic logs, unexpected privilege escalation in audit logs, SELinux denials related to lwis_periodic_io
Network Indicators:
- None - this is a local exploit
SIEM Query:
Look for kernel crash reports or privilege escalation events from Android devices