diff options
| author | Alan <gnomes@lxorguk.ukuu.org.uk> | 2016-02-15 18:58:10 +0000 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2016-03-05 14:48:04 -0800 |
| commit | 0c68423556b59d1ebd65b056e7f24ab7089da401 (patch) | |
| tree | 30e9e664a043455be64676ebbe215ea0f5015b30 /drivers | |
| parent | d6e29ca1f6cf566f67012dce269b5f9ba72a1659 (diff) | |
rtl871x: avoid running off end of buffer
If 32 bytes of non zero are passed in pdata->pointer then the mac_pton
function will run off the end of the buffer. Make sure we always have a
terminated string kernel side.
Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/staging/rtl8712/rtl871x_ioctl_linux.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/staging/rtl8712/rtl871x_ioctl_linux.c b/drivers/staging/rtl8712/rtl871x_ioctl_linux.c index a15f3ce70223..1b9e24900477 100644 --- a/drivers/staging/rtl8712/rtl871x_ioctl_linux.c +++ b/drivers/staging/rtl8712/rtl871x_ioctl_linux.c @@ -1961,7 +1961,7 @@ static int r871x_get_ap_info(struct net_device *dev, struct list_head *plist, *phead; unsigned char *pbuf; u8 bssid[ETH_ALEN]; - char data[32]; + char data[33]; if (padapter->bDriverStopped || (pdata == NULL)) return -EINVAL; @@ -1976,6 +1976,7 @@ static int r871x_get_ap_info(struct net_device *dev, if (pdata->length >= 32) { if (copy_from_user(data, pdata->pointer, 32)) return -EINVAL; + data[32] = 0; } else { return -EINVAL; } |