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Message-Id: <20170524.153224.1230164587077679673.davem@davemloft.net> Date: Wed, 24 May 2017 15:32:24 -0400 (EDT) From: David Miller <davem@...emloft.net> To: glider@...gle.com Cc: dvyukov@...gle.com, kcc@...gle.com, edumazet@...gle.com, linux-kernel@...r.kernel.org, netdev@...r.kernel.org Subject: Re: [PATCH] net: rtnetlink: bail out from rtnl_fdb_dump() on parse error From: Alexander Potapenko <glider@...gle.com> 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@...gle.com> Applied, thanks.
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