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| author | Johan Hovold <johan@kernel.org> | 2019-12-10 12:44:24 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-02-01 09:37:05 +0000 |
| commit | 57d472c65629e20ede3c9bc3c52e90d4d53201bd (patch) | |
| tree | 0b6ffff752ccbb1fcdaced01919c60fea1bd63d1 | |
| parent | 64f4dd1a9db2678812c30780be5e8cba2b753b39 (diff) | |
| download | linux-57d472c65629e20ede3c9bc3c52e90d4d53201bd.tar.gz linux-57d472c65629e20ede3c9bc3c52e90d4d53201bd.tar.bz2 linux-57d472c65629e20ede3c9bc3c52e90d4d53201bd.zip | |
rtl8xxxu: fix interface sanity check
commit 39a4281c312f2d226c710bc656ce380c621a2b16 upstream.
Make sure to use the current alternate setting when verifying the
interface descriptors to avoid binding to an invalid interface.
Failing to do so could cause the driver to misbehave or trigger a WARN()
in usb_submit_urb() that kernels with panic_on_warn set would choke on.
Fixes: 26f1fad29ad9 ("New driver: rtl8xxxu (mac80211)")
Cc: stable <stable@vger.kernel.org> # 4.4
Cc: Jes Sorensen <Jes.Sorensen@redhat.com>
Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu_core.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu_core.c b/drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu_core.c index b2e1523b4dc1..070ea0f456ab 100644 --- a/drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu_core.c +++ b/drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu_core.c @@ -5921,7 +5921,7 @@ static int rtl8xxxu_parse_usb(struct rtl8xxxu_priv *priv, u8 dir, xtype, num; int ret = 0; - host_interface = &interface->altsetting[0]; + host_interface = interface->cur_altsetting; interface_desc = &host_interface->desc; endpoints = interface_desc->bNumEndpoints; |