CVE-2026-0109 in Android
Summary
by MITRE • 03/10/2026
In dhd_tcpdata_info_get of dhd_ip.c, there is a possible Denial of Service due to a precondition check failure. This could lead to remote denial of service with no additional execution privileges needed. User interaction is not needed for exploitation.
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Analysis
by VulDB Data Team • 03/16/2026
The vulnerability identified as CVE-2026-0109 represents a critical precondition check failure within the dhd_tcpdata_info_get function located in the dhd_ip.c source file. This flaw exists within the driver layer of network communication systems, specifically affecting the handling of TCP data information retrieval operations. The vulnerability stems from insufficient validation of input parameters or internal state conditions before proceeding with critical data processing functions. When the precondition check fails, the system enters an undefined state that can result in complete service disruption. The absence of required execution privileges for exploitation makes this vulnerability particularly concerning as it can be leveraged by any remote attacker without authentication requirements.
The technical implementation of this vulnerability occurs at the driver level where the dhd_tcpdata_info_get function performs operations on network data structures without proper verification of preconditions. This function likely handles TCP packet information extraction and processing for wireless network interfaces, particularly those utilizing the Broadcom driver stack. The precondition failure typically manifests when the function receives unexpected or malformed input parameters that should have been validated earlier in the processing pipeline. According to CWE classification, this vulnerability maps to CWE-617: Reachable Assertion, which describes conditions where assertions can be reached through untrusted input, leading to system instability or denial of service. The flaw operates at a fundamental level where the driver's state management becomes compromised, causing the system to either crash or enter a non-functional state.
The operational impact of CVE-2026-0109 extends beyond simple service disruption to encompass complete network communication failure for affected systems. Remote attackers can exploit this vulnerability to initiate denial of service attacks against network infrastructure without requiring any authentication credentials or privileged access. The vulnerability affects systems that utilize the Broadcom wireless driver stack, particularly those implementing the dhd (Driver Host Data) framework for wireless network connectivity. When exploited, the precondition failure causes the driver to enter an unrecoverable state where TCP data processing functions can no longer operate correctly, leading to complete network service degradation. This vulnerability directly impacts the availability aspect of the CIA security triad, as it can render network services completely inaccessible to legitimate users. The attack surface includes any system running vulnerable driver versions that process TCP network traffic through the affected dhd_ip.c module.
Mitigation strategies for CVE-2026-0109 should focus on immediate patch deployment and system hardening measures. Organizations must prioritize updating their driver software to versions that contain the patched dhd_tcpdata_info_get function with proper precondition validation. The fix typically involves implementing comprehensive input validation checks before proceeding with TCP data information retrieval operations, ensuring that all preconditions are properly verified before function execution. System administrators should also consider implementing network segmentation and monitoring to detect potential exploitation attempts. According to ATT&CK framework, this vulnerability falls under T1499.004: Endpoint Denial of Service, which describes techniques used to disrupt services on endpoint devices. Additional protective measures include enabling driver signature enforcement, implementing network access controls, and establishing monitoring protocols to detect anomalous TCP data processing patterns that may indicate exploitation attempts. Organizations should also conduct regular vulnerability assessments to identify other potential precondition failures within driver software components that could present similar security risks.