CVE-2024-27374
📋 TL;DR
This vulnerability in Samsung Exynos mobile processors allows attackers to perform heap overwrite attacks by exploiting insufficient input validation in the slsi_nan_publish_get_nl_params() function. Affected devices include smartphones and tablets using Exynos 980, 850, 1280, 1380, and 1330 chipsets. The flaw enables potential privilege escalation or arbitrary code execution.
💻 Affected Systems
- Samsung Galaxy smartphones and tablets with Exynos 980, Exynos 850, Exynos 1280, Exynos 1380, Exynos 1330 processors
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Full device compromise leading to arbitrary code execution with kernel privileges, data theft, persistent backdoor installation, and complete device control.
Likely Case
Local privilege escalation allowing attackers to gain elevated permissions, bypass security controls, and access sensitive system resources.
If Mitigated
Limited impact with proper kernel hardening, exploit mitigations, and restricted user access preventing successful exploitation.
🎯 Exploit Status
Exploitation requires local access and knowledge of kernel memory layout. No public exploit code is currently available.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Samsung security updates released after March 2024
Vendor Advisory: https://semiconductor.samsung.com/support/quality-support/product-security-updates/
Restart Required: Yes
Instructions:
1. Check for Samsung security updates in device settings. 2. Install the latest available security patch. 3. Reboot device after installation. 4. Verify patch installation in About Phone > Software Information.
🔧 Temporary Workarounds
Restrict app permissions
androidLimit app permissions to reduce attack surface and prevent malicious apps from accessing vulnerable kernel functions.
Disable unnecessary features
androidDisable Wi-Fi NAN (Neighbor Awareness Networking) if not required, as the vulnerability is in NAN-related kernel code.
🧯 If You Can't Patch
- Implement strict app vetting and only install applications from trusted sources like Google Play Store
- Use mobile device management (MDM) solutions to enforce security policies and monitor for suspicious activity
🔍 How to Verify
Check if Vulnerable:
Check device model and kernel version. Vulnerable devices use Exynos 980, 850, 1280, 1380, or 1330 chipsets with kernel versions before March 2024 security patches.Check Version:
On Android device: Settings > About Phone > Software Information > Android security patch levelVerify Fix Applied:
Verify security patch level in Settings > About Phone > Software Information shows March 2024 or later security patch.📡 Detection & Monitoring
Log Indicators:
- Kernel panic logs
- Unexpected process crashes
- Suspicious kernel module loading
Network Indicators:
- Unusual NAN (Wi-Fi Neighbor Awareness Networking) activity
SIEM Query:
Not applicable for typical mobile device environments