Re: [PATCH net] 6lowpan: Off by one handling ->nexthdr

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Hi,

On Wed, Apr 03, 2019 at 08:34:16AM +0300, Dan Carpenter wrote:
> NEXTHDR_MAX is 255.  What happens here is that we take a u8 value
> "hdr->nexthdr" from the network and then look it up in
> lowpan_nexthdr_nhcs[].  The problem is that if hdr->nexthdr is 0xff then
> we read one element beyond the end of the array so the array needs to
> be one element larger.
> 
> Fixes: 92aa7c65d295 ("6lowpan: add generic nhc layer interface")
> Signed-off-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx>

Acked-by: Alexander Aring <aring@xxxxxxxxxxxx>

Thanks.

- Alex



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