From: Eric Dumazet <[email protected]>
Date: Tue, 12 Mar 2019 06:50:11 -0700
> Back in 2013 Hannes took care of most of such leaks in commit
> bceaa90240b6 ("inet: prevent leakage of uninitialized memory to user in recv
> syscalls")
>
> But the bug in l2tp_ip6_recvmsg() has not been fixed.
>
> syzbot report :
...
> Fixes: a32e0eec7042 ("l2tp: introduce L2TPv3 IP encapsulation support for
> IPv6")
> Signed-off-by: Eric Dumazet <[email protected]>
> Reported-by: syzbot <[email protected]>
Applied and queued up for -stable, thanks Eric.