From a050cf0c451bdf1c1bd512c4fce6b6f8a5e85102 Mon Sep 17 00:00:00 2001
From: Michael Niedermayer <michaelni@gmx.at>
Date: Mon, 27 Oct 2014 20:48:58 +0100
Subject: [PATCH] avcodec/sgidec: fix count check

Fixes: asan_heap-oob_22b30d4_39_038.sgi
Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
---
 libavcodec/sgidec.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/libavcodec/sgidec.c b/libavcodec/sgidec.c
index 8338863637..3ddbf77bc8 100644
--- a/libavcodec/sgidec.c
+++ b/libavcodec/sgidec.c
@@ -98,7 +98,7 @@ static int expand_rle_row16(SgiState *s, uint16_t *out_buf,
             break;
 
         /* Check for buffer overflow. */
-        if (pixelstride * (count - 1) >= len) {
+        if (out_end - out_buf <= pixelstride * (count - 1)) {
             av_log(s->avctx, AV_LOG_ERROR, "Invalid pixel count.\n");
             return AVERROR_INVALIDDATA;
         }