From 5b23cab5c769d6611a3fe111546d65809046a4d8 Mon Sep 17 00:00:00 2001 From: Michael Niedermayer Date: Sat, 17 Sep 2022 21:24:49 +0200 Subject: [PATCH] avformat/apm: Use 64bit for bit_rate computation Fixes: signed integer overflow: -1155522528 * 4 cannot be represented in type 'int' Fixes: 50993/clusterfuzz-testcase-minimized-ffmpeg_dem_APM_fuzzer-6580670570299392 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer --- libavformat/apm.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/libavformat/apm.c b/libavformat/apm.c index baf7d2f941..a3ddc08e83 100644 --- a/libavformat/apm.c +++ b/libavformat/apm.c @@ -148,7 +148,7 @@ static int apm_read_header(AVFormatContext *s) par->codec_id = AV_CODEC_ID_ADPCM_IMA_APM; par->format = AV_SAMPLE_FMT_S16; par->bit_rate = par->ch_layout.nb_channels * - par->sample_rate * + (int64_t)par->sample_rate * par->bits_per_coded_sample; if ((ret = avio_read(s->pb, buf, APM_FILE_EXTRADATA_SIZE)) < 0)