[FFmpeg-cvslog] avformat/gdv: Check fps
Michael Niedermayer
git at videolan.org
Thu Mar 14 18:51:36 EET 2019
ffmpeg | branch: release/4.1 | Michael Niedermayer <michael at niedermayer.cc> | Tue Mar 5 00:48:18 2019 +0100| [5d208aac52538e67d76c3fdd173e24ada876ca47] | committer: Michael Niedermayer
avformat/gdv: Check fps
Fixes: Division by 0
Fixes: ffmpeg_zero_division.bin
Found-by: Anatoly Trosinenko <anatoly.trosinenko at gmail.com>
Signed-off-by: Michael Niedermayer <michael at niedermayer.cc>
(cherry picked from commit 38381400fca45d1ae6e7604335b507b7dc70a903)
Signed-off-by: Michael Niedermayer <michael at niedermayer.cc>
> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=5d208aac52538e67d76c3fdd173e24ada876ca47
---
libavformat/gdv.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/libavformat/gdv.c b/libavformat/gdv.c
index a69c349cab..3ead383892 100644
--- a/libavformat/gdv.c
+++ b/libavformat/gdv.c
@@ -86,6 +86,9 @@ static int gdv_read_header(AVFormatContext *ctx)
vst->nb_frames = avio_rl16(pb);
fps = avio_rl16(pb);
+ if (!fps)
+ return AVERROR_INVALIDDATA;
+
snd_flags = avio_rl16(pb);
if (snd_flags & 1) {
ast = avformat_new_stream(ctx, 0);
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