diff options
| author | Dan Carpenter <dan.carpenter@oracle.com> | 2011-10-20 09:10:39 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2011-10-23 10:13:20 +0200 |
| commit | 44ec5d29169426b00fe054f0a13744140de29e11 (patch) | |
| tree | 7386bd46141b1ff8b8deec5a28d419672f9c8633 /drivers/staging | |
| parent | 883aeecc9ddc120e34a1157aee37738a4e96b517 (diff) | |
Staging: vt6656: add some range checks before memcpy()
We need to verify that we're not writing past the end of the array.
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/staging')
| -rw-r--r-- | drivers/staging/vt6656/ioctl.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/staging/vt6656/ioctl.c b/drivers/staging/vt6656/ioctl.c index 2cde4f0c0469..49390026dea3 100644 --- a/drivers/staging/vt6656/ioctl.c +++ b/drivers/staging/vt6656/ioctl.c @@ -81,6 +81,8 @@ int private_ioctl(PSDevice pDevice, struct ifreq *rq) } pItemSSID = (PWLAN_IE_SSID)sScanCmd.ssid; + if (pItemSSID->len > WLAN_SSID_MAXLEN + 1) + return -EINVAL; if (pItemSSID->len != 0) { memset(abyScanSSID, 0, WLAN_IEHDR_LEN + WLAN_SSID_MAXLEN + 1); memcpy(abyScanSSID, pItemSSID, pItemSSID->len + WLAN_IEHDR_LEN); @@ -155,6 +157,8 @@ int private_ioctl(PSDevice pDevice, struct ifreq *rq) } pItemSSID = (PWLAN_IE_SSID)sJoinCmd.ssid; + if (pItemSSID->len > WLAN_SSID_MAXLEN + 1) + return -EINVAL; memset(pMgmt->abyDesireSSID, 0, WLAN_IEHDR_LEN + WLAN_SSID_MAXLEN + 1); memcpy(pMgmt->abyDesireSSID, pItemSSID, pItemSSID->len + WLAN_IEHDR_LEN); if (sJoinCmd.wBSSType == ADHOC) { @@ -476,6 +480,8 @@ int private_ioctl(PSDevice pDevice, struct ifreq *rq) } pItemSSID = (PWLAN_IE_SSID)sStartAPCmd.ssid; + if (pItemSSID->len > WLAN_SSID_MAXLEN + 1) + return -EINVAL; memset(pMgmt->abyDesireSSID, 0, WLAN_IEHDR_LEN + WLAN_SSID_MAXLEN + 1); memcpy(pMgmt->abyDesireSSID, pItemSSID, pItemSSID->len + WLAN_IEHDR_LEN); |