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| author | Johan Hovold <johan@kernel.org> | 2017-03-13 12:44:20 (GMT) |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2017-05-25 13:44:35 (GMT) |
| commit | adc6647c4f0f6f7f3d838d1ccd7398695b6b0702 (patch) | |
| tree | 0ff01836179c7bd0e29fa098a3f8edba3c969c77 /drivers | |
| parent | c39bafb9ee7a2aaaf71cdcac7bd583ee741b3da2 (diff) | |
| download | linux-adc6647c4f0f6f7f3d838d1ccd7398695b6b0702.tar.xz | |
ath9k_htc: fix NULL-deref at probe
commit ebeb36670ecac36c179b5fb5d5c88ff03ba191ec upstream.
Make sure to check the number of endpoints to avoid dereferencing a
NULL-pointer or accessing memory beyond the endpoint array should a
malicious device lack the expected endpoints.
Fixes: 36bcce430657 ("ath9k_htc: Handle storage devices")
Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/net/wireless/ath/ath9k/hif_usb.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/net/wireless/ath/ath9k/hif_usb.c b/drivers/net/wireless/ath/ath9k/hif_usb.c index a9b1518..f15589c 100644 --- a/drivers/net/wireless/ath/ath9k/hif_usb.c +++ b/drivers/net/wireless/ath/ath9k/hif_usb.c @@ -1219,6 +1219,9 @@ static int send_eject_command(struct usb_interface *interface) u8 bulk_out_ep; int r; + if (iface_desc->desc.bNumEndpoints < 2) + return -ENODEV; + /* Find bulk out endpoint */ for (r = 1; r >= 0; r--) { endpoint = &iface_desc->endpoint[r].desc; |