CVE-2025-47369: Information Disclosure Vulnerability

CVE-2025-47369 Overview

CVE-2025-47369 is an information disclosure vulnerability that occurs when a weak hashed value is returned to userland code in response to an IOCTL call to obtain a session ID. This weakness (CWE-200: Exposure of Sensitive Information to an Unauthorized Actor) allows local attackers with low privileges to potentially recover sensitive session information due to the use of an inadequate hashing algorithm.

Critical Impact

Local attackers may be able to predict or reverse-engineer session IDs, potentially leading to session hijacking or unauthorized access to protected resources.

Affected Products

• Qualcomm components (refer to the Qualcomm January 2026 Security Bulletin for specific product details)

Discovery Timeline

• 2026-01-07 - CVE-2025-47369 published to NVD
• 2026-01-08 - Last updated in NVD database

Technical Details for CVE-2025-47369

Vulnerability Analysis

This information disclosure vulnerability affects the session ID generation mechanism in Qualcomm device drivers. When userland applications make IOCTL (Input/Output Control) calls to request a session identifier, the driver returns a hashed value that is cryptographically weak. The vulnerability allows a local attacker with low privileges to potentially extract sensitive session information without requiring any user interaction.

The attack surface is limited to local access, meaning an attacker would need to have already established some level of access to the affected system. However, the confidentiality impact is significant as successful exploitation could expose session data that should remain protected.

Root Cause

The underlying issue stems from the implementation of an insufficiently strong hashing algorithm when generating session IDs. When the driver processes IOCTL requests for session identifiers, it applies a hash function that does not provide adequate cryptographic strength, making the resulting session IDs predictable or reversible through computational analysis.

Attack Vector

The attack requires local access to the affected system. An attacker with low-privilege user permissions can interact with the vulnerable driver through standard IOCTL system calls. By capturing the returned weak hash values, the attacker can potentially:

1. Perform offline analysis to reverse the weak hash
2. Predict valid session identifiers for other sessions
3. Leverage recovered session information for further attacks

The vulnerability manifests when userland applications invoke the IOCTL interface to obtain session identifiers. Due to the weak hashing implementation, the returned values do not adequately protect the underlying session data. For detailed technical specifications, refer to the Qualcomm January 2026 Security Bulletin.

Detection Methods for CVE-2025-47369

Indicators of Compromise

• Unusual frequency of IOCTL calls targeting session ID retrieval from userland processes
• Unexpected processes or applications querying the affected driver interfaces
• Anomalous access patterns to session-related driver functionality
• Evidence of brute-force or pattern analysis attempts against session identifiers

Detection Strategies

• Monitor IOCTL call patterns to identify abnormal session ID request frequencies
• Implement audit logging for driver interactions, particularly those involving session management
• Deploy endpoint detection solutions capable of monitoring driver-level activity
• Review system logs for unauthorized or suspicious processes accessing driver interfaces

Monitoring Recommendations

• Enable enhanced logging for device driver interactions on systems with Qualcomm components
• Implement behavioral analysis to detect unusual session ID retrieval patterns
• Monitor for known exploitation techniques targeting IOCTL-based information disclosure
• Correlate session-related events across systems to identify potential coordinated attacks

How to Mitigate CVE-2025-47369

Immediate Actions Required

• Review the Qualcomm January 2026 Security Bulletin for patch availability
• Inventory all systems with affected Qualcomm components
• Prioritize patching based on system exposure and criticality
• Implement additional access controls to limit IOCTL interface access where possible

Patch Information

Qualcomm has addressed this vulnerability in their January 2026 security bulletin. Organizations should consult the Qualcomm January 2026 Security Bulletin for specific patch details, firmware updates, and affected product versions. Work with device manufacturers and OEMs to obtain updated firmware that incorporates the security fix.

Workarounds

• Restrict local user access to systems containing affected Qualcomm components
• Implement application whitelisting to control which processes can interact with vulnerable driver interfaces
• Apply the principle of least privilege to minimize the number of users with local system access
• Consider network segmentation to limit the impact of potential session information exposure

# Example: Audit IOCTL calls on Linux systems (adjust for specific driver)
# Monitor for suspicious driver interactions
auditctl -w /dev/<qualcomm_driver> -p rwa -k qualcomm_ioctl_monitor