From 55c97a763783540ee48a326a3e82fbdea42f8280 Mon Sep 17 00:00:00 2001 From: Michael Niedermayer Date: Wed, 23 Oct 2019 22:32:47 +0200 Subject: avcodec/wmavoice: Check sample_rate Fixes: left shift of 538976288 by 8 places cannot be represented in type 'int' Fixes: 18376/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_WMAVOICE_fuzzer-5741645391200256 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer --- libavcodec/wmavoice.c | 3 +++ 1 file changed, 3 insertions(+) (limited to 'libavcodec/wmavoice.c') diff --git a/libavcodec/wmavoice.c b/libavcodec/wmavoice.c index 68bb65986e..4c147fe04f 100644 --- a/libavcodec/wmavoice.c +++ b/libavcodec/wmavoice.c @@ -433,6 +433,9 @@ static av_cold int wmavoice_decode_init(AVCodecContext *ctx) return AVERROR_INVALIDDATA; } + if (ctx->sample_rate >= INT_MAX / (256 * 37)) + return AVERROR_INVALIDDATA; + s->min_pitch_val = ((ctx->sample_rate << 8) / 400 + 50) >> 8; s->max_pitch_val = ((ctx->sample_rate << 8) * 37 / 2000 + 50) >> 8; pitch_range = s->max_pitch_val - s->min_pitch_val; -- cgit v1.2.3