Re: [PATCH net] sctp: initialize sin6_flowinfo for ipv6 addrs in sctp_inet6addr_event

[David Miller]

From: Xin Long <lucien.xin@xxxxxxxxx>
Date: Mon, 10 Dec 2018 18:00:52 +0800

> syzbot reported a kernel-infoleak, which is caused by an uninitialized
> field(sin6_flowinfo) of addr->a.v6 in sctp_inet6addr_event().
> The call trace is as below:
...
> sin6_flowinfo is not really used by SCTP, so it will be fixed by simply
> setting it to 0.
> 
> The issue exists since very beginning.
> Thanks Alexander for the reproducer provided.
> 
> Reported-by: syzbot+ad5d327e6936a2e284be@xxxxxxxxxxxxxxxxxxxxxxxxx
> Signed-off-by: Xin Long <lucien.xin@xxxxxxxxx>

Applied and queued up for -stable, thanks Xin.