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CVE-2022-25742: Loop with Unreachable Exit Condition in MODEM in Qualcomm, Inc. Snapdragon Consumer IOT, Snapdragon Industrial IOT, Snapdragon Voice & Music

Medium
Published: Tue Nov 15 2022 (11/15/2022, 00:00:00 UTC)
Source: CVE
Vendor/Project: Qualcomm, Inc.
Product: Snapdragon Consumer IOT, Snapdragon Industrial IOT, Snapdragon Voice & Music

Description

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

AI-Powered Analysis

AILast updated: 06/21/2025, 19:24:36 UTC

Technical Analysis

CVE-2022-25742 is a vulnerability identified in various Qualcomm Snapdragon platforms, specifically targeting the modem component responsible for handling network communications. The affected products include Snapdragon Consumer IoT, Industrial IoT, and Voice & Music platforms, encompassing a broad range of chipsets such as AR8031, CSRA6620, MDM8207, QCA4004, WCD9306, and others. The core issue arises from an infinite loop triggered during the parsing of IGMPv2 (Internet Group Management Protocol version 2) packets received from a server. This infinite loop occurs because the modem's packet parser encounters a loop with an unreachable exit condition, classified under CWE-835 (Loop with Unreachable Exit Condition). As a result, the modem enters a denial-of-service (DoS) state, effectively halting its normal operation and potentially disrupting network connectivity. The vulnerability does not require authentication or user interaction to be exploited, as it can be triggered by sending a specially crafted IGMPv2 packet to the device. Although no known exploits have been reported in the wild, the vulnerability poses a risk to devices relying on these Qualcomm Snapdragon chipsets for network communication, particularly in IoT and voice/music applications where continuous connectivity is critical. The absence of a patch at the time of reporting further increases the risk profile, necessitating proactive mitigation measures.

Potential Impact

For European organizations, the impact of CVE-2022-25742 can be significant, especially for those deploying IoT devices, industrial control systems, or communication equipment based on the affected Qualcomm Snapdragon platforms. A successful exploitation leads to a denial-of-service condition in the modem, resulting in loss of network connectivity. This can disrupt critical operations such as industrial automation, smart city infrastructure, healthcare devices, and voice communication systems. The disruption may cause operational downtime, loss of data transmission, and degraded service availability. In sectors like manufacturing, energy, and telecommunications, where IoT devices are integral, such outages could lead to financial losses and safety risks. Additionally, the inability to communicate may hinder remote monitoring and management, complicating incident response. Given the widespread adoption of Qualcomm Snapdragon chipsets in consumer and industrial IoT devices across Europe, the vulnerability could affect a broad range of organizations, from small enterprises to large industrial operators.

Mitigation Recommendations

1. Network Filtering: Implement network-level filtering to block or scrutinize IGMPv2 packets from untrusted or external sources, reducing the risk of malicious packet injection. 2. Firmware Updates: Monitor Qualcomm and device manufacturers for firmware updates or patches addressing this vulnerability and apply them promptly once available. 3. Device Segmentation: Isolate IoT and industrial devices using affected chipsets on separate network segments with strict access controls to limit exposure. 4. Intrusion Detection: Deploy network intrusion detection systems (NIDS) capable of identifying anomalous IGMPv2 traffic patterns indicative of exploitation attempts. 5. Vendor Coordination: Engage with device vendors to confirm the presence of this vulnerability in deployed hardware and request mitigation guidance or updates. 6. Incident Response Planning: Prepare response procedures for modem DoS incidents, including device reboot protocols and fallback communication methods to maintain operational continuity. 7. Disable IGMPv2 if Unused: Where feasible, disable IGMPv2 processing on devices or network equipment to eliminate the attack vector, especially if multicast group management is not required.

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Technical Details

Data Version
5.1
Assigner Short Name
qualcomm
Date Reserved
2022-02-22T00:00:00.000Z
Cisa Enriched
true

Threat ID: 682d9849c4522896dcbf7019

Added to database: 5/21/2025, 9:09:29 AM

Last enriched: 6/21/2025, 7:24:36 PM

Last updated: 7/31/2025, 2:47:10 AM

Views: 12

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