This avoids accepting bizare constructs like a mdat at position 0 and size 0
Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc>
---
libavformat/mov.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/libavformat/mov.c b/libavformat/mov.c
index 5440078459..2df6762ec9 100644
--- a/libavformat/mov.c
+++ b/libavformat/mov.c
@@ -7117,7 +7117,7 @@ static int mov_probe(const AVProbeData *p)
if (size == 1 && offset + 16 > (unsigned int)p->buf_size) {
size = AV_RB64(p->buf+offset + 8);
minsize = 16;
- } else if (size == 0) {
+ } else if (size == 0 && offset) {
size = p->buf_size - offset;
}
if (size < minsize) {
--
2.17.1
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