CVE-2025-47369

5.5 MEDIUM

📋 TL;DR

This vulnerability allows information disclosure when a weak hashed value is returned to userland code in response to an IOCTL call to obtain a session ID. Attackers can potentially extract sensitive session information. This affects systems using Qualcomm components that implement this vulnerable IOCTL interface.

💻 Affected Systems

Products:
  • Qualcomm chipsets and devices using affected drivers
Versions: Specific versions not detailed in reference
Operating Systems: Android, Linux-based systems with Qualcomm drivers
Default Config Vulnerable: ⚠️ Yes
Notes: Requires local access or ability to execute userland code

📦 What is this software?

⚠️ Risk & Real-World Impact

🔴

Worst Case

Session hijacking leading to unauthorized access to sensitive systems or data

🟠

Likely Case

Information leakage about session states or system internals

🟢

If Mitigated

Limited information disclosure with no direct access to sensitive data

🌐 Internet-Facing: LOW with brief explanation
🏢 Internal Only: MEDIUM with brief explanation

🎯 Exploit Status

Public PoC: ✅ No
Weaponized: UNKNOWN
Unauthenticated Exploit: ✅ No
Complexity: MEDIUM

Requires ability to make IOCTL calls and understand returned hash values

🛠️ Fix & Mitigation

✅ Official Fix

Patch Version: Refer to Qualcomm January 2026 security bulletin

Vendor Advisory: https://docs.qualcomm.com/product/publicresources/securitybulletin/january-2026-bulletin.html

Restart Required: Yes

Instructions:

1. Check Qualcomm advisory for specific patches. 2. Apply vendor-provided firmware/driver updates. 3. Reboot affected systems.

🔧 Temporary Workarounds

Restrict IOCTL access

linux

Limit which processes can make IOCTL calls to affected drivers

Use SELinux/AppArmor policies to restrict driver access

🧯 If You Can't Patch

  • Implement strict access controls to prevent unauthorized userland code execution
  • Monitor for unusual IOCTL calls to session-related drivers

🔍 How to Verify

Check if Vulnerable:

Check Qualcomm chipset/driver versions against advisory

Check Version:

Check device firmware/driver versions via manufacturer tools

Verify Fix Applied:

Verify updated driver/firmware versions match patched versions in advisory

📡 Detection & Monitoring

Log Indicators:

  • Unusual IOCTL calls to session-related drivers
  • Multiple failed session ID requests

Network Indicators:

  • Not network exploitable - local vulnerability

SIEM Query:

Process making unusual IOCTL calls to driver interfaces

🔗 References

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