INT AirPDcapInitContext(
    PAIRPDCAP_CONTEXT ctx)
{
    AIRPDCAP_DEBUG_TRACE_START("AirPDcapInitContext");

    if (ctx==NULL) {
        AIRPDCAP_DEBUG_PRINT_LINE("AirPDcapInitContext", "NULL context", AIRPDCAP_DEBUG_LEVEL_5);
        AIRPDCAP_DEBUG_TRACE_END("AirPDcapInitContext");
        return AIRPDCAP_RET_UNSUCCESS;
    }

    AirPDcapCleanKeys(ctx);

    ctx->first_free_index=0;
    ctx->index=-1;
    ctx->sa_index=-1;
    ctx->pkt_ssid_len = 0;

    memset(ctx->sa, 0, AIRPDCAP_MAX_SEC_ASSOCIATIONS_NR * sizeof(AIRPDCAP_SEC_ASSOCIATION));

    AIRPDCAP_DEBUG_PRINT_LINE("AirPDcapInitContext", "Context initialized!", AIRPDCAP_DEBUG_LEVEL_5);
    AIRPDCAP_DEBUG_TRACE_END("AirPDcapInitContext");
    return AIRPDCAP_RET_SUCCESS;
}

The product reads data past the end, or before the beginning, of the intended buffer.