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-rw-r--r--libavformat/mov.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/libavformat/mov.c b/libavformat/mov.c
index 68c81dede4..c9de693df0 100644
--- a/libavformat/mov.c
+++ b/libavformat/mov.c
@@ -1060,6 +1060,9 @@ static int mov_read_udta(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
uint32_t tag = get_le32(pb);
uint64_t next = url_ftell(pb) + tag_size - 8;
+ if (next > end) // stop if tag_size is wrong
+ break;
+
switch (tag) {
case MKTAG(0xa9,'n','a','m'):
mov_parse_udta_string(pb, c->fc->title, sizeof(c->fc->title));