Buffer Overwrite Vulnerability in wma_pdev_div_info_evt_handler() Function

CVE-2018-5843 · MEDIUM Severity

AV:L/AC:L/AU:N/C:P/I:P/A:P

In the function wma_pdev_div_info_evt_handler() in all Android releases from CAF (Android for MSM, Firefox OS for MSM, QRD Android) using the Linux Kernel, there is no upper bound check on the value event->num_chains_valid received from firmware which can lead to a buffer overwrite of the fixed size chain_rssi_result structure.

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