| From | Greg Kroah-Hartman <> | Subject | [PATCH 4.9 096/139] media: ati_remote: sanity check for both endpoints | Date | Tue, 27 Oct 2020 14:49:50 +0100 |
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From: Oliver Neukum <oneukum@suse.com>
[ Upstream commit a8be80053ea74bd9c3f9a3810e93b802236d6498 ]
If you do sanity checks, you should do them for both endpoints. Hence introduce checking for endpoint type for the output endpoint, too.
Reported-by: syzbot+998261c2ae5932458f6c@syzkaller.appspotmail.com Signed-off-by: Oliver Neukum <oneukum@suse.com> Signed-off-by: Sean Young <sean@mess.org> Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org> Signed-off-by: Sasha Levin <sashal@kernel.org> --- drivers/media/rc/ati_remote.c | 4 ++++ 1 file changed, 4 insertions(+)
diff --git a/drivers/media/rc/ati_remote.c b/drivers/media/rc/ati_remote.c index 9f5b59706741c..7f98db4bc0277 100644 --- a/drivers/media/rc/ati_remote.c +++ b/drivers/media/rc/ati_remote.c @@ -850,6 +850,10 @@ static int ati_remote_probe(struct usb_interface *interface, err("%s: endpoint_in message size==0? \n", __func__); return -ENODEV; } + if (!usb_endpoint_is_int_out(endpoint_out)) { + err("%s: Unexpected endpoint_out\n", __func__); + return -ENODEV; + } ati_remote = kzalloc(sizeof (struct ati_remote), GFP_KERNEL); rc_dev = rc_allocate_device(); -- 2.25.1
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