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

No testcase Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
6 years ago · ff13a92a6f
parent d92034a06a
commit ff13a92a6f
1 changed files with 1 additions and 1 deletions
--- a/libavformat/mov.c
+++ b/libavformat/mov.c
@ -4778,7 +4778,7 @@ 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");
    }