[FFmpeg-cvslog] avformat/cafdec: clip sample rate

[Michael Niedermayer]

ffmpeg | branch: master | Michael Niedermayer <michael at niedermayer.cc> | Wed Nov 18 00:48:26 2020 +0100| [684aec6a6872c9e3bb0afee1979f1cd3edd1f8ce] | committer: Michael Niedermayer

avformat/cafdec: clip sample rate

Fixes: 1.21126e+111 is outside the range of representable values of type 'int'
Fixes: 27398/clusterfuzz-testcase-minimized-ffmpeg_dem_CAF_fuzzer-5412960339755008

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

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=684aec6a6872c9e3bb0afee1979f1cd3edd1f8ce
---

 libavformat/cafdec.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/libavformat/cafdec.c b/libavformat/cafdec.c
index c188aad20f..b7a9711cc5 100644
--- a/libavformat/cafdec.c
+++ b/libavformat/cafdec.c
@@ -70,7 +70,7 @@ static int read_desc_chunk(AVFormatContext *s)
 
     /* parse format description */
     st->codecpar->codec_type  = AVMEDIA_TYPE_AUDIO;
-    st->codecpar->sample_rate = av_int2double(avio_rb64(pb));
+    st->codecpar->sample_rate = av_clipd(av_int2double(avio_rb64(pb)), 0, INT_MAX);
     st->codecpar->codec_tag   = avio_rl32(pb);
     flags = avio_rb32(pb);
     caf->bytes_per_packet  = avio_rb32(pb);