diff --git a/libavformat/mxfdec.c b/libavformat/mxfdec.c
index 456c84e996..e484db052e 100644
--- a/libavformat/mxfdec.c
+++ b/libavformat/mxfdec.c
@@ -1892,9 +1892,13 @@ static int mxf_edit_unit_absolute_offset(MXFContext *mxf, MXFIndexTable *index_t
         if (edit_unit < s->index_start_position + s->index_duration) {
             int64_t index = edit_unit - s->index_start_position;
 
-            if (s->edit_unit_byte_count)
+            if (s->edit_unit_byte_count) {
+                if (index > INT64_MAX / s->edit_unit_byte_count ||
+                    s->edit_unit_byte_count * index > INT64_MAX - offset_temp)
+                    return AVERROR_INVALIDDATA;
+
                 offset_temp += s->edit_unit_byte_count * index;
-            else {
+            } else {
                 if (s->nb_index_entries == 2 * s->index_duration + 1)
                     index *= 2;     /* Avid index */