[FFmpeg-cvslog] avformat/mov: Fix potential integer overflow in entry check in mov_read_trun()

[Michael Niedermayer]

ffmpeg | branch: release/4.0 | Michael Niedermayer <michael at niedermayer.cc> | Sun Mar 17 11:14:26 2019 +0100| [530286c96bd83b333833cd36b71a35268cb435f9] | committer: Michael Niedermayer

avformat/mov: Fix potential integer overflow in entry check in mov_read_trun()

No testcase

Signed-off-by: Michael Niedermayer <michael at niedermayer.cc>
(cherry picked from commit ff13a92a6f8413402f5b3cacedda7c10d350b487)
Signed-off-by: Michael Niedermayer <michael at niedermayer.cc>

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=530286c96bd83b333833cd36b71a35268cb435f9
---

 libavformat/mov.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/libavformat/mov.c b/libavformat/mov.c
index 14a02dc4e6..7a34a228c1 100644
--- a/libavformat/mov.c
+++ b/libavformat/mov.c
@@ -4760,7 +4760,7 @@ static int mov_read_trun(MOVContext *c, AVIOContext *pb, MOVAtom atom)
     av_log(c->fc, AV_LOG_TRACE, "first sample flags 0x%x\n", first_sample_flags);
 
     // realloc space for new index entries
-    if((unsigned)st->nb_index_entries + entries >= UINT_MAX / sizeof(AVIndexEntry)) {
+    if((uint64_t)st->nb_index_entries + entries >= UINT_MAX / sizeof(AVIndexEntry)) {
         entries = UINT_MAX / sizeof(AVIndexEntry) - st->nb_index_entries;
         av_log(c->fc, AV_LOG_ERROR, "Failed to add index entry\n");
     }