NULL Pointer Dereference in Linux Kernel MT76 WiFi Driver

Executive Summary

This is a NULL-pointer dereference vulnerability in the Linux kernel's mt76 Wi-Fi driver. The issue occurs in the mt76_connac_mcu_uni_bss_he_tlv function where the mt76_connac_get_he_phy_cap routine may return NULL. The code attempts to use this NULL pointer without checking, which could lead to a system crash or other undefined behavior.

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Detection Guidance

This vulnerability is specific to the Linux kernel's mt76 Wi-Fi driver and involves a potential NULL-pointer dereference in the mt76_connac_mcu_uni_bss_he_tlv function. Detection requires checking for affected kernel versions and examining the mt76 driver code for the described issue.

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Impact Analysis

If exploited, this vulnerability could cause a kernel panic or system instability, leading to denial of service. It may also potentially allow unauthorized code execution in the kernel context, depending on the system configuration and attacker capabilities.

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Compliance Impact

This vulnerability is a NULL-pointer dereference in the Linux kernel's wifi driver (mt76). It does not directly affect compliance with GDPR, HIPAA, or similar standards as it is a low-level software bug with no documented impact on data protection, privacy, or security controls required by these regulations.

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Mitigation Strategies

Update your Linux kernel to the latest patched version to resolve the NULL-pointer dereference in the mt76_connac_mcu_uni_bss_he_tlv function.

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