From 49c220f93beadf9bde2641a4ec6344d32fb69193 Mon Sep 17 00:00:00 2001 From: Michael Niedermayer Date: Tue, 27 Oct 2020 17:21:19 +0100 Subject: [PATCH] avcodec/utils: Check sample rate before use for AV_CODEC_ID_BINKAUDIO_DCT in get_audio_frame_duration() Fixes: shift exponent 95 is too large for 32-bit type 'int' Fixes: 26590/clusterfuzz-testcase-minimized-ffmpeg_dem_SMACKER_fuzzer-5120609937522688 Reviewed-by: Peter Ross Signed-off-by: Michael Niedermayer (cherry picked from commit ec7e0d42884b40ce93b6b5e94de5f7849310f8a0) Signed-off-by: Michael Niedermayer --- libavcodec/utils.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/libavcodec/utils.c b/libavcodec/utils.c index 20d9d4ceee..2b2a3a9cda 100644 --- a/libavcodec/utils.c +++ b/libavcodec/utils.c @@ -1594,8 +1594,11 @@ static int get_audio_frame_duration(enum AVCodecID id, int sr, int ch, int ba, if (ch > 0) { /* calc from sample rate and channels */ - if (id == AV_CODEC_ID_BINKAUDIO_DCT) + if (id == AV_CODEC_ID_BINKAUDIO_DCT) { + if (sr / 22050 > 22) + return 0; return (480 << (sr / 22050)) / ch; + } } if (id == AV_CODEC_ID_MP3)