CVE-2022-25742 in Snapdragon Consumer IOT
Summary
by MITRE • 11/15/2022
Denial of service in modem due to infinite loop while parsing IGMPv2 packet from server in Snapdragon Consumer IOT, Snapdragon Industrial IOT, Snapdragon Voice & Music
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Analysis
by VulDB Data Team • 05/08/2026
This vulnerability represents a critical denial of service condition affecting Qualcomm Snapdragon IoT platforms that implement IGMPv2 packet processing. The flaw manifests as an infinite loop during the parsing of IGMPv2 packets received from network servers, specifically impacting Snapdragon Consumer IOT, Snapdragon Industrial IOT, and Snapdragon Voice & Music product lines. The vulnerability occurs within the network protocol handling layer where malformed or specially crafted IGMPv2 packets trigger a condition that causes the modem processor to enter an endless loop, consuming system resources and rendering the device non-responsive.
The technical implementation of this vulnerability stems from inadequate input validation and error handling within the IGMPv2 packet parsing routine. When the modem receives an IGMPv2 packet that contains specific malformed fields or sequences, the parsing algorithm fails to properly terminate its processing loop, causing the system to become unresponsive. This behavior directly maps to CWE-835, which describes the weakness of infinite loops or infinite recursion in software implementations. The vulnerability exists in the network stack processing component of the Snapdragon IoT platforms, where the IGMPv2 implementation lacks proper bounds checking and loop termination conditions.
The operational impact of this vulnerability extends beyond simple service disruption to potentially compromise the availability of IoT devices in critical deployments. In industrial IoT environments, this could result in complete system outages for connected devices, affecting production processes and operational continuity. Consumer IoT devices may become unresponsive, requiring manual intervention or device reboot to restore functionality. The attack vector requires only the ability to send specially crafted IGMPv2 packets to the affected device, making this vulnerability particularly dangerous as it can be exploited remotely without requiring physical access or authentication credentials. This aligns with ATT&CK technique T1499.001, which covers network denial of service attacks targeting network infrastructure and connected devices.
Mitigation strategies for this vulnerability should include firmware updates from Qualcomm that implement proper bounds checking and loop termination logic within the IGMPv2 packet parsing code. Network administrators should consider implementing ingress filtering and packet inspection rules to identify and block malformed IGMPv2 traffic. Additionally, the deployment of network segmentation and monitoring solutions can help detect anomalous IGMP traffic patterns that may indicate exploitation attempts. The vulnerability highlights the importance of robust input validation in network protocol implementations and demonstrates the critical need for comprehensive testing of network stack components in IoT devices. Organizations should also consider implementing automated monitoring systems that can detect device unresponsiveness and trigger alerting mechanisms to ensure rapid response to potential exploitation attempts.