[FFmpeg-cvslog] avformat/segafilm: Check that there is a stream

Michael Niedermayer git at videolan.org
Thu Oct 22 21:00:03 EEST 2020


ffmpeg | branch: master | Michael Niedermayer <michael at niedermayer.cc> | Thu Oct 22 00:37:25 2020 +0200| [c0d7fd269beed030fc767fee28d9dbe111bc4427] | committer: Michael Niedermayer

avformat/segafilm: Check that there is a stream

Fixes: assertion failure
Fixes: 26472/clusterfuzz-testcase-minimized-ffmpeg_dem_SEGAFILM_fuzzer-5759751591559168

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Reviewed-by: Andreas Rheinhardt <andreas.rheinhardt at gmail.com>
Signed-off-by: Michael Niedermayer <michael at niedermayer.cc>

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=c0d7fd269beed030fc767fee28d9dbe111bc4427
---

 libavformat/segafilm.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/libavformat/segafilm.c b/libavformat/segafilm.c
index 4d14b81d16..17592c905e 100644
--- a/libavformat/segafilm.c
+++ b/libavformat/segafilm.c
@@ -144,6 +144,9 @@ static int film_read_header(AVFormatContext *s)
         film->video_type = AV_CODEC_ID_NONE;
     }
 
+    if (!film->video_type && !film->audio_type)
+        return AVERROR_INVALIDDATA;
+
     /* initialize the decoder streams */
     if (film->video_type) {
         st = avformat_new_stream(s, NULL);



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