CVE-2024-43053
📋 TL;DR
This vulnerability allows memory corruption when user-space applications make IOCTL calls to read WLAN diagnostic information. Attackers could potentially execute arbitrary code or cause denial of service on affected systems. This affects devices using Qualcomm WLAN chipsets with vulnerable drivers.
💻 Affected Systems
- Qualcomm WLAN chipsets and associated drivers
📦 What is this software?
Snapdragon 429 Mobile Platform Firmware by Qualcomm
View all CVEs affecting Snapdragon 429 Mobile Platform Firmware →
⚠️ Risk & Real-World Impact
Worst Case
Remote code execution with kernel privileges leading to complete system compromise
Likely Case
Local privilege escalation or denial of service affecting WLAN functionality
If Mitigated
Limited impact with proper access controls preventing unauthorized IOCTL calls
🎯 Exploit Status
Requires ability to make IOCTL calls to the vulnerable driver interface
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Refer to Qualcomm December 2024 security bulletin for specific patched versions
Vendor Advisory: https://docs.qualcomm.com/product/publicresources/securitybulletin/december-2024-bulletin.html
Restart Required: No
Instructions:
1. Check Qualcomm advisory for affected chipset/driver versions. 2. Obtain updated driver/firmware from device manufacturer. 3. Apply the patch following manufacturer's instructions. 4. Verify patch application.
🔧 Temporary Workarounds
Disable WLAN diagnostic features
allPrevent user-space access to vulnerable IOCTL calls by disabling diagnostic functionality
Specific commands vary by device/OS - consult manufacturer documentation
Restrict IOCTL access permissions
Linux-based systemsLimit which users/processes can make IOCTL calls to the WLAN driver
chmod 600 /dev/wlan_diagnostic
setfacl -m u:root:rw- /dev/wlan_diagnostic
🧯 If You Can't Patch
- Implement strict access controls to prevent unauthorized users from making IOCTL calls
- Monitor for suspicious WLAN diagnostic access attempts and implement network segmentation
🔍 How to Verify
Check if Vulnerable:
Check Qualcomm chipset/driver version against affected versions in security bulletinCheck Version:
dmesg | grep -i qualcomm OR cat /sys/class/net/wlan0/device/ueventVerify Fix Applied:
Verify driver/firmware version has been updated to patched version from manufacturer📡 Detection & Monitoring
Log Indicators:
- Unusual IOCTL calls to WLAN diagnostic interfaces
- Multiple failed diagnostic access attempts
- Kernel panic or crash logs related to WLAN driver
Network Indicators:
- Abnormal WLAN diagnostic traffic patterns
- Unexpected network scanning from affected devices
SIEM Query:
source="kernel" AND ("WLAN" OR "qualcomm") AND ("IOCTL" OR "diagnostic")