CVE-2025-47381
📋 TL;DR
This vulnerability allows memory corruption when multiple processes concurrently access shared buffers through IOCTL calls in Qualcomm drivers. Attackers could potentially execute arbitrary code or cause system crashes. Affected systems include devices using vulnerable Qualcomm components.
💻 Affected Systems
- Qualcomm chipsets and associated drivers
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Remote code execution leading to complete system compromise, data theft, or persistent backdoor installation
Likely Case
Local privilege escalation allowing attackers to gain elevated privileges on compromised systems
If Mitigated
System crash or denial of service without code execution if exploit fails or protections are in place
🎯 Exploit Status
Requires local access and ability to trigger concurrent IOCTL calls; race condition exploitation adds complexity
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Check Qualcomm March 2026 security bulletin for specific patched versions
Vendor Advisory: https://docs.qualcomm.com/product/publicresources/securitybulletin/march-2026-bulletin.html
Restart Required: Yes
Instructions:
1. Check Qualcomm advisory for affected chipset/driver versions. 2. Obtain updated drivers/firmware from device manufacturer. 3. Apply patches following manufacturer instructions. 4. Reboot system to load patched drivers.
🔧 Temporary Workarounds
Restrict IOCTL access
linuxLimit access to vulnerable IOCTL interfaces using security policies
# Use SELinux/AppArmor to restrict driver access
# Example: setenforce 1 to enable enforcing mode
Disable vulnerable drivers
linuxPrevent loading of affected Qualcomm drivers if not required
# Blacklist driver module: echo "blacklist vulnerable_driver" >> /etc/modprobe.d/blacklist.conf
# Rebuild initramfs if needed
🧯 If You Can't Patch
- Implement strict access controls to limit which users/processes can interact with Qualcomm drivers
- Monitor for unusual driver activity and implement application allowlisting to prevent unauthorized code execution
🔍 How to Verify
Check if Vulnerable:
Check Qualcomm chipset/driver versions against advisory; examine loaded kernel modules for vulnerable driversCheck Version:
# Check Qualcomm driver versions: dmesg | grep -i qualcomm
# Check kernel modules: lsmod | grep -i qcomVerify Fix Applied:
Verify driver versions match patched versions from advisory; test system stability with concurrent IOCTL operations📡 Detection & Monitoring
Log Indicators:
- Multiple concurrent IOCTL calls to Qualcomm drivers
- Kernel panic or crash logs mentioning memory corruption
- Unusual driver activity from non-privileged processes
Network Indicators:
- Local privilege escalation attempts
- Unusual inter-process communication patterns
SIEM Query:
source="kernel" AND ("qualcomm" OR "qcom") AND ("panic" OR "corruption" OR "ioctl")