[FFmpeg-cvslog] avcodec/utils: fix 2 integer overflows in get_audio_frame_duration()

[Michael Niedermayer]

ffmpeg | branch: release/4.2 | Michael Niedermayer <michael at niedermayer.cc> | Sun Jun 18 21:00:03 2023 +0200| [201c74b33d1b0a45f11f7775dc66ee3883edd772] | committer: Michael Niedermayer

avcodec/utils: fix 2 integer overflows in get_audio_frame_duration()

Fixes: signed integer overflow: 256 * 668003712 cannot be represented in type 'int'
Fixes: 59819/clusterfuzz-testcase-minimized-ffmpeg_dem_MATROSKA_fuzzer-4674636538052608

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael at niedermayer.cc>
(cherry picked from commit a4bf559683a999c8faa408fdd8f29bd28a6a47ea)
Signed-off-by: Michael Niedermayer <michael at niedermayer.cc>

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=201c74b33d1b0a45f11f7775dc66ee3883edd772
---

 libavcodec/utils.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/libavcodec/utils.c b/libavcodec/utils.c
index 20ab9a055e..8f87d21610 100644
--- a/libavcodec/utils.c
+++ b/libavcodec/utils.c
@@ -1611,9 +1611,9 @@ static int get_audio_frame_duration(enum AVCodecID id, int sr, int ch, int ba,
     if (sr > 0) {
         /* calc from sample rate */
         if (id == AV_CODEC_ID_TTA)
-            return 256 * sr / 245;
+            return 256ll * sr / 245;
         else if (id == AV_CODEC_ID_DST)
-            return 588 * sr / 44100;
+            return 588ll * sr / 44100;
 
         if (ch > 0) {
             /* calc from sample rate and channels */