From: Hannes Frederic Sowa <han...@stressinduktion.org>
Date: Thu, 26 Nov 2015 12:08:18 +0100
> sendpage did not care about credentials at all. This could lead to
> situations in which because of fd passing between processes we could
> append data to skbs with different scm data. It is illegal to splice those
> skbs together. Instead we have to allocate a new skb and if requested
> fill out the scm details.
>
> Fixes: 869e7c62486ec ("net: af_unix: implement stream sendpage support")
> Reported-by: Al Viro <v...@zeniv.linux.org.uk>
> Cc: Al Viro <v...@zeniv.linux.org.uk>
> Cc: Eric Dumazet <eduma...@google.com>
> Signed-off-by: Hannes Frederic Sowa <han...@stressinduktion.org>
Applied and queued up for -stable... but here we go with even more
complexity in arguably one of the most complex and often buggiest
protocol family implementations :-/
We seem to enjoy self-torture but putting hack on top of hack...
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