linux-kernel - [ 076/184] staging: vt6656: [BUG] out of bound array reference

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Message-Id: <20130604172133.455994743@1wt.eu>
Date:	Tue, 04 Jun 2013 19:22:46 +0200
From:	Willy Tarreau <w@....eu>
To:	linux-kernel@...r.kernel.org, stable@...r.kernel.org
Cc:	Malcolm Priestley <tvboxspy@...il.com>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Willy Tarreau <w@....eu>
Subject: [ 076/184] staging: vt6656: [BUG] out of bound array reference

2.6.32-longterm review patch.  If anyone has any objections, please let me know.

------------------
 in RFbSetPower.

From: Malcolm Priestley <tvboxspy@...il.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@...il.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Signed-off-by: Willy Tarreau <w@....eu>
---
 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 405c4f7..9d059de 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:
-- 
1.7.12.2.21.g234cd45.dirty



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