[158/222] staging: vt6656: [BUG] out of bound array reference in RFbSetPower.

Message ID 1358351822-7675-159-git-send-email-herton.krzesinski@canonical.com
State New
Headers show

Commit Message

Herton Ronaldo Krzesinski Jan. 16, 2013, 3:55 p.m. -stable review patch.  If anyone has any objections, please let me know.


From: Malcolm Priestley <tvboxspy@gmail.com>

commit ab1dd9963137a1e122004d5378a581bf16ae9bc8 upstream.

Calling RFbSetPower with uCH zero value will cause out of bound array reference.

This causes 64 bit kernels to oops on boot.

Note: Driver does not function on 64 bit kernels and should be
blacklisted on them.

Signed-off-by: Malcolm Priestley <tvboxspy@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Herton Ronaldo Krzesinski <herton.krzesinski@canonical.com>
 drivers/staging/vt6656/rf.c |    3 +++
 1 file changed, 3 insertions(+)


diff --git a/drivers/staging/vt6656/rf.c b/drivers/staging/vt6656/rf.c
index 3fd0478..8cf0881 100644
--- a/drivers/staging/vt6656/rf.c
+++ b/drivers/staging/vt6656/rf.c
@@ -769,6 +769,9 @@  BYTE    byPwr = pDevice->byCCKPwr;
         return TRUE;
+	if (uCH == 0)
+		return -EINVAL;
     switch (uRATE) {
     case RATE_1M:
     case RATE_2M: