Fix possible null deref in ndpi_utils:2347

[koltiradw]

Hi! Pointer 'flow' that can have only NULL value (ndpi_get_http_method function), is passed as 2nd parameter in call to function ndpi_set_risk where it is dereferenced at ndpi_utils.c:2347.

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[utoni]

Can you provide more information under what circumstances that NUL deref may happen? Maybe a PCAP?

[IvanNardi]

Can you provide more information under what circumstances that NUL deref may happen? Maybe a PCAP?

+1