diff options
| -rw-r--r-- | libavformat/ffmdec.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/libavformat/ffmdec.c b/libavformat/ffmdec.c index 1ae24762b6..84bd5e9fba 100644 --- a/libavformat/ffmdec.c +++ b/libavformat/ffmdec.c @@ -89,6 +89,8 @@ static int ffm_read_data(AVFormatContext *s, while (size > 0) { redo: len = ffm->packet_end - ffm->packet_ptr; + if (len < 0) + return -1; if (len > size) len = size; if (len == 0) { |