Fixes: signed integer overflow: -251517880 * 32 cannot be represented in type 'int' Fixes: 385224934/clusterfuzz-testcase-minimized-ffmpeg_dem_W64_fuzzer-4909298151915520 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer <michael@niedermayer.cc> --- libavformat/wavdec.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/libavformat/wavdec.c b/libavformat/wavdec.c index 78e37b88d75..0e31c34d0af 100644 --- a/libavformat/wavdec.c +++ b/libavformat/wavdec.c @@ -912,10 +912,10 @@ static int w64_read_header(AVFormatContext *s) if (st->codecpar->block_align && st->codecpar->ch_layout.nb_channels < FF_SANE_NB_CHANNELS && st->codecpar->bits_per_coded_sample < 128) { - int block_align = st->codecpar->block_align; + int64_t block_align = st->codecpar->block_align; block_align = FFMAX(block_align, - ((st->codecpar->bits_per_coded_sample + 7) / 8) * + ((st->codecpar->bits_per_coded_sample + 7) / 8LL) * st->codecpar->ch_layout.nb_channels); if (block_align > st->codecpar->block_align) { av_log(s, AV_LOG_WARNING, "invalid block_align: %d, broken file.\n", -- 2.48.1