Re: [B.A.T.M.A.N.] [PATCH] batman-adv: Check size information when reassembling fragments

Philipp Psurek
2014-11-25T21:16:28Z

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Hi Martin, hi Sven, hi all,

thanks for working on my bug.

Am Dienstag, den 25.11.2014, 19:39 +0100 schrieb Martin Hundebøll:
> Can you please test this patch, and report back if it fixes your crash?

After I tweeted about this bug in my Community with link to my thread in
this ML telling there is no gateway for now and switching the VM to
3.17.4 8,5 hours from now; the VM didn't crush. It might be the attacker
is sleeping because there were no gateway announced through DHCP or some
changes in the new version prevent the kernel panic:
35e95fae72ddb67ef94395d99abc48589ce17875
dd8aaf1f380e008044857d7d2293e8e2824772b8
5a282822a9e472a41a7e2db71903a1c6654c634a

dmesg screams “UDP: bad checksum.” all the time, but it's to soon to
tell.

I test this patch if the VM crashes again. If the VM didn't crash until
Sunday I do a kernel downgrade to 3.17.3 or 3.16.7 with your patch and
report. Or should I implement your patch immediately on the old kernel
to prove your work without waiting? It would be much convenient to
implement this during an actual attack and it would much more prove your
work.

I'll report soon. Thanks for your work and Batman-adv.

Best regards

Philipp

________________________
Freifunk Rheinland e. V.
– Funkzelle Wuppertal –

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