[FFmpeg-cvslog] avcodec/utils: Use 64bit for intermediate in AV_CODEC_ID_ADPCM_THP* duration calculation

[Michael Niedermayer]

ffmpeg | branch: master | Michael Niedermayer <michael at niedermayer.cc> | Thu Jun 24 20:00:05 2021 +0200| [00ae9b77ef757f82660b4b3d2f490374a4f209fd] | committer: Michael Niedermayer

avcodec/utils: Use 64bit for intermediate in AV_CODEC_ID_ADPCM_THP* duration calculation

Fixes: signed integer overflow: 486539264 * 14 cannot be represented in type 'int'
Fixes: 35281/clusterfuzz-testcase-minimized-ffmpeg_dem_RSD_fuzzer-6068262742917120

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=00ae9b77ef757f82660b4b3d2f490374a4f209fd
---

 libavcodec/utils.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/libavcodec/utils.c b/libavcodec/utils.c
index 342709353f..88e88bc958 100644
--- a/libavcodec/utils.c
+++ b/libavcodec/utils.c
@@ -712,7 +712,7 @@ static int get_audio_frame_duration(enum AVCodecID id, int sr, int ch, int ba,
             case AV_CODEC_ID_ADPCM_THP:
             case AV_CODEC_ID_ADPCM_THP_LE:
                 if (extradata)
-                    return frame_bytes * 14 / (8 * ch);
+                    return frame_bytes * 14LL / (8 * ch);
                 break;
             case AV_CODEC_ID_ADPCM_XA:
                 return (frame_bytes / 128) * 224 / ch;