[FFmpeg-cvslog] avformat/aiffdec: Use 64bit for block_duration use
Michael Niedermayer
git at videolan.org
Mon Sep 26 01:24:43 EEST 2022
ffmpeg | branch: release/4.4 | Michael Niedermayer <michael at niedermayer.cc> | Sat Sep 17 16:32:09 2022 +0200| [cc5c5beb98996de1a5fe28881f224056cb2aca2e] | committer: Michael Niedermayer
avformat/aiffdec: Use 64bit for block_duration use
Fixes: signed integer overflow: 3 * -2147483648 cannot be represented in type 'int'
Fixes: 50993/clusterfuzz-testcase-minimized-ffmpeg_dem_AIFF_fuzzer-6668935979728896
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Reviewed-by: Paul B Mahol <onemda at gmail.com>
Signed-off-by: Michael Niedermayer <michael at niedermayer.cc>
(cherry picked from commit 9303ba272e988d87084880c57056b750cc5ffd08)
Signed-off-by: Michael Niedermayer <michael at niedermayer.cc>
> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=cc5c5beb98996de1a5fe28881f224056cb2aca2e
---
libavformat/aiffdec.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/libavformat/aiffdec.c b/libavformat/aiffdec.c
index b1dbeae06f..f14044d61c 100644
--- a/libavformat/aiffdec.c
+++ b/libavformat/aiffdec.c
@@ -425,7 +425,7 @@ static int aiff_read_packet(AVFormatContext *s,
pkt->flags &= ~AV_PKT_FLAG_CORRUPT;
/* Only one stream in an AIFF file */
pkt->stream_index = 0;
- pkt->duration = (res / st->codecpar->block_align) * aiff->block_duration;
+ pkt->duration = (res / st->codecpar->block_align) * (int64_t) aiff->block_duration;
return 0;
}
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