Re: [PATCH] net: rtnetlink: bail out from rtnl_fdb_dump() on parse error

[David Miller]

From: Alexander Potapenko <glider@xxxxxxxxxx>
Date: Tue, 23 May 2017 13:20:28 +0200

> rtnl_fdb_dump() failed to check the result of nlmsg_parse(), which led
> to contents of |ifm| being uninitialized because nlh->nlmsglen was too
> small to accommodate |ifm|. The uninitialized data may affect some
> branches and result in unwanted effects, although kernel data doesn't
> seem to leak to the userspace directly.
> 
> The bug has been detected with KMSAN and syzkaller.
> 
> Signed-off-by: Alexander Potapenko <glider@xxxxxxxxxx>

Applied, thanks.