netdev - Re: [PATCH net] sctp: do not leak kernel memory to user space

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Message-Id: <20180408.103228.2196714632269620008.davem@davemloft.net>
Date:   Sun, 08 Apr 2018 10:32:28 -0400 (EDT)
From:   David Miller <davem@...emloft.net>
To:     edumazet@...gle.com
Cc:     netdev@...r.kernel.org, eric.dumazet@...il.com
Subject: Re: [PATCH net] sctp: do not leak kernel memory to user space

From: Eric Dumazet <edumazet@...gle.com>
Date: Sat,  7 Apr 2018 17:15:22 -0700

> syzbot produced a nice report [1]
> 
> Issue here is that a recvmmsg() managed to leak 8 bytes of kernel memory
> to user space, because sin_zero (padding field) was not properly cleared.
 ...
> Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2")
> Signed-off-by: Eric Dumazet <edumazet@...gle.com>
> Cc:	Vlad Yasevich <vyasevich@...il.com>
> Cc:	Neil Horman <nhorman@...driver.com>
> Reported-by: syzbot <syzkaller@...glegroups.com>

Applied and queued up for -stable, thanks Eric.