From: James Almer <jamrial@gmail.com>
Date: Fri, 26 Apr 2019 15:31:19 +0000 (-0300)
Subject: avcodec/scpr3: add missing check for decode_value3() return value
X-Git-Url: https://git.sesse.net/?a=commitdiff_plain;h=938cb783d40ad5ee40f4e2be8617fdfb493dbe4d;p=ffmpeg

avcodec/scpr3: add missing check for decode_value3() return value

Fixes ticket #7866.

Signed-off-by: James Almer <jamrial@gmail.com>
---

diff --git a/libavcodec/scpr3.c b/libavcodec/scpr3.c
index f92ccfa9026..5cfad9f4d21 100644
--- a/libavcodec/scpr3.c
+++ b/libavcodec/scpr3.c
@@ -1038,6 +1038,9 @@ static int decompress_p3(AVCodecContext *avctx,
                          s->range_model3.freqs[1],
                          s->range_model3.cnts,
                          s->range_model3.dectab, &temp);
+    if (ret < 0)
+        return ret;
+
     min += temp << 8;
     ret |= decode_value3(s, 255, &s->range_model3.cntsum,
                          s->range_model3.freqs[0],