From ac73d3a12a33c5e4e6357d5f8824e19801663eb5 Mon Sep 17 00:00:00 2001
From: Michael Niedermayer <michaelni@gmx.at>
Date: Mon, 14 Jan 2013 16:22:41 +0100
Subject: [PATCH] init_get_bits8: check byte_size against being positive

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
---
 libavcodec/get_bits.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/libavcodec/get_bits.h b/libavcodec/get_bits.h
index af7e156e59b..1946c78af29 100644
--- a/libavcodec/get_bits.h
+++ b/libavcodec/get_bits.h
@@ -406,7 +406,7 @@ static inline int init_get_bits(GetBitContext *s, const uint8_t *buffer,
 static inline int init_get_bits8(GetBitContext *s, const uint8_t *buffer,
                                  int byte_size)
 {
-    if (byte_size > INT_MAX / 8)
+    if (byte_size > INT_MAX / 8 || byte_size < 0)
         return AVERROR_INVALIDDATA;
     return init_get_bits(s, buffer, byte_size * 8);
 }
-- 
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