CVE-2026-20411
📋 TL;DR
This CVE describes a use-after-free vulnerability in the cameraisp component that could allow local privilege escalation. Attackers with System privilege could exploit this to cause denial of service without user interaction. This affects devices using MediaTek chipsets with vulnerable camera ISP firmware.
💻 Affected Systems
- MediaTek chipset devices with cameraisp component
⚠️ Risk & Real-World Impact
Worst Case
Complete system crash or kernel panic leading to persistent denial of service requiring physical reboot
Likely Case
Local denial of service affecting camera functionality and potentially related system services
If Mitigated
Limited impact if proper privilege separation and memory protection mechanisms are in place
🎯 Exploit Status
Requires System privilege to exploit; no user interaction needed once privilege is obtained
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Patch ID: ALPS10351676
Vendor Advisory: https://corp.mediatek.com/product-security-bulletin/February-2026
Restart Required: Yes
Instructions:
1. Check device manufacturer for firmware updates. 2. Apply MediaTek patch ALPS10351676. 3. Reboot device to load patched cameraisp component.
🔧 Temporary Workarounds
Restrict System Privilege Access
linuxLimit which applications and users can obtain System privilege
Review and restrict SELinux/AppArmor policies for camera services
Implement principle of least privilege for all system services
🧯 If You Can't Patch
- Implement strict access controls to prevent unauthorized System privilege acquisition
- Monitor for suspicious privilege escalation attempts and camera service crashes
🔍 How to Verify
Check if Vulnerable:
Check device firmware version against MediaTek security bulletin; examine cameraisp component versionCheck Version:
Check manufacturer-specific firmware version commands (varies by device)Verify Fix Applied:
Verify patch ALPS10351676 is applied; check camera functionality remains stable during stress testing📡 Detection & Monitoring
Log Indicators:
- Unexpected camera service crashes
- Kernel panic logs related to memory management
- Suspicious privilege escalation attempts
Network Indicators:
- None - local exploitation only
SIEM Query:
source="kernel" AND ("cameraisp" OR "use-after-free") AND severity>=HIGH