wpabuf overflow with WPS

Jouni Malinen j at w1.fi
Thu Apr 28 10:06:03 PDT 2016

On Thu, Apr 28, 2016 at 01:31:05PM +0200, Xue Liu wrote:
> I have removed the patch and generate a new hostapd program. Then I
> run the program with -d option, and there is no wpabuf overflow, but
> my Nexus 9 still can not make a connection with Clearfog board via
> WPS. Since the debug info is quite a lot. I put them in the
> attachment. Thank you.

Thanks. This looks like something completely different. The client
device does not seem to even try to associate with the AP. It does go
through Authentication frame exchange, but then nothing.. The debug
patch should have no impact on this type of functionality, so it is a
bit difficult to say what caused this.

> root at OpenWrt:~# hostapd -d hostapd.cfg 

Or are you maybe running this over a slow serial port connection? If so,
there will likely be a significant extra latency on operations and it
would be better to direct the output to a file with something like

hostapd -dd hostapd.cfg > /tmp/hostapd.log

Jouni Malinen                                            PGP id EFC895FA

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