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[lwip-devel] [bug #57790] Fragmented UDP packets leads to crash on reass

From: Jarno Malmari
Subject: [lwip-devel] [bug #57790] Fragmented UDP packets leads to crash on reassembly
Date: Thu, 13 Feb 2020 14:48:17 -0500 (EST)
User-agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/80.0.3987.88 Safari/537.36

Follow-up Comment #6, bug #57790 (project lwip):

> As to the read/write of memory: lwIP *does* write into the payload of
received packets. They are *not* readonly. TCP does that (there's a bug that
this might need to be changed) and IPv4 reassembly does that, too: it stores
reassembly information in the pbuf where the IP header would be (after copying
the header once). 
This is good to know. I assumed otherwise, so this is something I need to get
back to. I won't be able to check it right away so feel free to close this for

Can you point me to that tcp bug so I can follow up any discussion there?



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