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| author | Johan Hovold <johan@kernel.org> | 2020-01-14 09:27:29 +0100 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2020-01-14 18:43:21 -0800 |
| commit | 86f3f4cd53707ceeec079b83205c8d3c756eca93 (patch) | |
| tree | fc0ca9cf35e8a6cf065344a9548e3a3ade6bf31e /drivers | |
| parent | c742c59e1fbd022b64d91aa9a0092b3a699d653c (diff) | |
| download | linux-86f3f4cd53707ceeec079b83205c8d3c756eca93.tar.gz linux-86f3f4cd53707ceeec079b83205c8d3c756eca93.tar.bz2 linux-86f3f4cd53707ceeec079b83205c8d3c756eca93.zip | |
r8152: add missing endpoint sanity check
Add missing endpoint sanity check to probe in order to prevent a
NULL-pointer dereference (or slab out-of-bounds access) when retrieving
the interrupt-endpoint bInterval on ndo_open() in case a device lacks
the expected endpoints.
Fixes: 40a82917b1d3 ("net/usb/r8152: enable interrupt transfer")
Cc: hayeswang <hayeswang@realtek.com>
Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/net/usb/r8152.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/net/usb/r8152.c b/drivers/net/usb/r8152.c index c5ebf35d2488..031cb8fff909 100644 --- a/drivers/net/usb/r8152.c +++ b/drivers/net/usb/r8152.c @@ -6597,6 +6597,9 @@ static int rtl8152_probe(struct usb_interface *intf, return -ENODEV; } + if (intf->cur_altsetting->desc.bNumEndpoints < 3) + return -ENODEV; + usb_reset_device(udev); netdev = alloc_etherdev(sizeof(struct r8152)); if (!netdev) { |