[FFmpeg-devel] [PATCH 4/6] avformat/pp_bnk: Use 64bit in bitrate computation
Michael Niedermayer
michael at niedermayer.cc
Sun Apr 25 22:40:12 EEST 2021
Fixes: signed integer overflow: 1207959552 * 4 cannot be represented in type 'int'
Fixes: 29102/clusterfuzz-testcase-minimized-ffmpeg_dem_PP_BNK_fuzzer-6747301169201152
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael at niedermayer.cc>
---
libavformat/pp_bnk.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/libavformat/pp_bnk.c b/libavformat/pp_bnk.c
index 07eeca3cd5..5ffe733b18 100644
--- a/libavformat/pp_bnk.c
+++ b/libavformat/pp_bnk.c
@@ -223,7 +223,7 @@ static int pp_bnk_read_header(AVFormatContext *s)
par->bits_per_coded_sample = 4;
par->bits_per_raw_sample = 16;
par->block_align = 1;
- par->bit_rate = par->sample_rate * par->bits_per_coded_sample * par->channels;
+ par->bit_rate = par->sample_rate * (int64_t)par->bits_per_coded_sample * par->channels;
avpriv_set_pts_info(st, 64, 1, par->sample_rate);
st->start_time = 0;
--
2.17.1
More information about the ffmpeg-devel
mailing list