[FFmpeg-devel] [PATCH 1/3] avformat/mxfdec: check index entry array size

[Marton Balint]

Signed-off-by: Marton Balint <cus at passwd.hu>
---
 libavformat/mxfdec.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/libavformat/mxfdec.c b/libavformat/mxfdec.c
index e6118e141d..ad4ee15570 100644
--- a/libavformat/mxfdec.c
+++ b/libavformat/mxfdec.c
@@ -1198,11 +1198,15 @@ static int mxf_read_essence_container_data(void *arg, AVIOContext *pb, int tag,
 static int mxf_read_index_entry_array(AVIOContext *pb, MXFIndexTableSegment *segment)
 {
     int i, length;
+    uint32_t nb_index_entries;
 
     if (segment->temporal_offset_entries)
         return AVERROR_INVALIDDATA;
 
-    segment->nb_index_entries = avio_rb32(pb);
+    nb_index_entries = avio_rb32(pb);
+    if (nb_index_entries > INT_MAX)
+        return AVERROR_INVALIDDATA;
+    segment->nb_index_entries = nb_index_entries;
 
     length = avio_rb32(pb);
     if(segment->nb_index_entries && length < 11)
-- 
2.35.3