[Dnsmasq-discuss] reproducible segmentation fault - bisected!

Christian Kujau lists at nerdbynature.de
Mon Aug 28 17:27:22 BST 2017


On Mon, 28 Aug 2017, Christian Kujau wrote:
> On Mon, 28 Aug 2017, Kevin Darbyshire-Bryant wrote:
> > My workaround is to only call memset if the difference between buffer begin
> > and buffer limit is bigger than the query length, thus it retains Simon's
> > intent of clearing memory most of the time but avoids the SIGSEGV trampling.
> 
> Thanks, with your patch dnsmasq doesn't crash anymore when receiving odd 
> EDNS packets from dnseval.
> 
> And thanks for requesting the CVE - I thought about this too, as the bug 
> constitutes some kind of DoS issue, but since nobody else complained, I 
> suspected it to be some variation of PEBKAC on my part :)

Oh, I believe it was Juan Manuel requesting the CVE - thanks!

C.
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