From a9fcab5cdc34c86147e5d4e6eaca28a63bf6b826 Mon Sep 17 00:00:00 2001 From: Michael Niedermayer Date: Sun, 18 Sep 2022 16:45:30 +0200 Subject: [PATCH] avformat/xwma: Use av_rescale() for duration computation Fixes: signed integer overflow: 34242363648 * 538976288 cannot be represented in type 'long' Fixes: 50993/clusterfuzz-testcase-minimized-ffmpeg_DEMUXER_fuzzer-6577923913547776 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer (cherry picked from commit 2c789f753c3657be9041307f9c03749f5ba5a6bb) Signed-off-by: Michael Niedermayer --- libavformat/xwma.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/libavformat/xwma.c b/libavformat/xwma.c index 6e74a338bf..babe9bcd30 100644 --- a/libavformat/xwma.c +++ b/libavformat/xwma.c @@ -253,7 +253,7 @@ static int xwma_read_header(AVFormatContext *s) * the total duration using the average bits per sample and the * total data length. */ - st->duration = (size<<3) * st->codecpar->sample_rate / st->codecpar->bit_rate; + st->duration = av_rescale((size<<3), st->codecpar->sample_rate, st->codecpar->bit_rate); } fail: