From 696685df0ccf437083d15f40358a6ec86f5748ac Mon Sep 17 00:00:00 2001 From: Michael Niedermayer Date: Thu, 11 Jul 2024 22:37:54 +0200 Subject: [PATCH] avformat/xmv: Check this_packet_size Fixes: CID1604489 Overflowed constant Sponsored-by: Sovereign Tech Fund Signed-off-by: Michael Niedermayer --- libavformat/xmv.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/libavformat/xmv.c b/libavformat/xmv.c index e103b2368e..ed59f7b85b 100644 --- a/libavformat/xmv.c +++ b/libavformat/xmv.c @@ -221,6 +221,8 @@ static int xmv_read_header(AVFormatContext *s) /* Initialize the packet context */ xmv->next_packet_offset = avio_tell(pb); + if (this_packet_size < xmv->next_packet_offset) + return AVERROR_INVALIDDATA; xmv->next_packet_size = this_packet_size - xmv->next_packet_offset; xmv->stream_count = xmv->audio_track_count + 1;