CVE-2025-47399
📋 TL;DR
This vulnerability allows attackers to cause memory corruption by sending specially crafted IOCTL calls with invalid parameters to sensor property settings. It affects systems using Qualcomm chipsets with vulnerable sensor drivers. Successful exploitation could lead to privilege escalation or denial of service.
💻 Affected Systems
- Qualcomm chipsets with sensor drivers
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Local privilege escalation to kernel-level access, potentially leading to full system compromise and persistence.
Likely Case
System crash or denial of service through kernel panic or system instability.
If Mitigated
Limited impact with proper input validation and memory protection mechanisms in place.
🎯 Exploit Status
Requires local access and ability to make IOCTL calls; buffer overflow exploitation requires specific memory layout
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Refer to Qualcomm February 2026 security bulletin for specific patch versions
Vendor Advisory: https://docs.qualcomm.com/product/publicresources/securitybulletin/february-2026-bulletin.html
Restart Required: Yes
Instructions:
1. Check Qualcomm advisory for affected chipset versions. 2. Obtain updated firmware/drivers from device manufacturer. 3. Apply patches following manufacturer instructions. 4. Reboot system.
🔧 Temporary Workarounds
Restrict IOCTL access
linuxLimit access to sensor device nodes to prevent unauthorized IOCTL calls
chmod 600 /dev/sensor*
setenforce 1 (if SELinux enabled)
Disable unnecessary sensors
linuxDisable sensor drivers not required for system operation
rmmod sensor_driver_module
echo 'blacklist sensor_driver' >> /etc/modprobe.d/blacklist.conf
🧯 If You Can't Patch
- Implement strict application sandboxing to limit IOCTL access
- Deploy kernel hardening features like SELinux/AppArmor with strict policies
🔍 How to Verify
Check if Vulnerable:
Check Qualcomm chipset version and compare against advisory; examine loaded sensor driver modulesCheck Version:
cat /proc/cpuinfo | grep -i qualcomm; lsmod | grep sensorVerify Fix Applied:
Verify driver/firmware version matches patched version in advisory; test IOCTL calls with fuzzing tools📡 Detection & Monitoring
Log Indicators:
- Kernel panic logs
- Driver crash messages in dmesg
- Unusual IOCTL calls to sensor devices
Network Indicators:
- Not network exploitable - local only
SIEM Query:
source="kernel" AND ("panic" OR "Oops" OR "general protection fault") AND process="sensor"