From d96b8144c0058586d3c3472de2621d105f0aa620 Mon Sep 17 00:00:00 2001
From: Martin Vignali <martin.vignali@gmail.com>
Date: Sat, 25 Jun 2016 18:24:12 +0200
Subject: [PATCH] avcodec/exr: add missed hunks from previous exr commit

---
 libavcodec/exr.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/libavcodec/exr.c b/libavcodec/exr.c
index 05e72d8440..c87187c05c 100644
--- a/libavcodec/exr.c
+++ b/libavcodec/exr.c
@@ -980,12 +980,19 @@ static int b44_uncompress(EXRContext *s, const uint8_t *src, int compressed_size
             }
             target_channel_offset += 2;
         } else {/* Float or UINT 32 channel */
+            if (stayToUncompress < td->ysize * td->xsize * 4) {
+                av_log(s, AV_LOG_ERROR, "Not enough data for uncompress channel: %d", stayToUncompress);
+                return AVERROR_INVALIDDATA;
+            }
+
             for (y = 0; y < td->ysize; y++) {
                 indexOut = target_channel_offset * td->xsize + y * td->channel_line_size;
                 memcpy(&td->uncompressed_data[indexOut], sr, td->xsize * 4);
                 sr += td->xsize * 4;
             }
             target_channel_offset += 4;
+
+            stayToUncompress -= td->ysize * td->xsize * 4;
         }
     }