CVE-2025-47350
📋 TL;DR
This vulnerability allows memory corruption when a user-space application makes concurrent memory mapping and unmapping requests. It affects systems using Qualcomm components that handle memory management operations. Attackers could potentially exploit this to execute arbitrary code or cause denial of service.
💻 Affected Systems
- Qualcomm chipsets and associated firmware
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Full system compromise with kernel-level code execution leading to complete control of affected device
Likely Case
Local privilege escalation or denial of service affecting system stability
If Mitigated
Limited impact with proper memory isolation and access controls in place
🎯 Exploit Status
Exploitation requires local access and ability to trigger specific concurrent memory operations
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Versions specified in Qualcomm December 2025 security bulletin
Vendor Advisory: https://docs.qualcomm.com/product/publicresources/securitybulletin/december-2025-bulletin.html
Restart Required: Yes
Instructions:
1. Check Qualcomm advisory for specific affected components. 2. Obtain updated firmware from device manufacturer. 3. Apply firmware update following manufacturer instructions. 4. Reboot device to activate fixes.
🔧 Temporary Workarounds
Restrict user-space memory operations
linuxLimit applications' ability to perform concurrent memory mapping/unmapping operations
echo 0 > /proc/sys/vm/mmap_min_addr
sysctl -w vm.mmap_min_addr=65536
🧯 If You Can't Patch
- Implement strict application sandboxing to limit memory operation capabilities
- Monitor for unusual memory mapping patterns and restrict suspicious processes
🔍 How to Verify
Check if Vulnerable:
Check Qualcomm chipset version and compare against advisory, or test with controlled concurrent mmap/munmap operationsCheck Version:
cat /proc/cpuinfo | grep -i qualcommVerify Fix Applied:
Verify firmware version matches patched version from Qualcomm bulletin and test that concurrent operations no longer cause corruption📡 Detection & Monitoring
Log Indicators:
- Kernel panic logs
- Memory corruption warnings in dmesg
- Unexpected process crashes with memory access errors
Network Indicators:
- Not network exploitable - local vulnerability only
SIEM Query:
source="kernel" AND ("panic" OR "corruption" OR "segfault") AND process="*mmap*"