From 2171dfae8c065878a2e130390eb78cf2947a5b69 Mon Sep 17 00:00:00 2001
From: Michael Niedermayer <michael@niedermayer.cc>
Date: Sat, 13 May 2017 15:39:32 +0200
Subject: avcodec/scpr: Fix multiple runtime error: index 256 out of bounds for
 type 'unsigned int [256]'

Fixes: 1519/clusterfuzz-testcase-minimized-5286680976162816

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/targets/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
---
 libavcodec/scpr.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/libavcodec/scpr.c b/libavcodec/scpr.c
index b87c047..46f072c 100644
--- a/libavcodec/scpr.c
+++ b/libavcodec/scpr.c
@@ -261,6 +261,9 @@ static int decode_unit(SCPRContext *s, PixelModel *pixel, unsigned step, unsigne
             break;
         c++;
     }
+    if (x >= 16 || c >= 256) {
+        return AVERROR_INVALIDDATA;
+    }
 
     if ((ret = s->decode(gb, rc, cumfr, cnt_c, totfr)) < 0)
         return ret;
-- 
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