From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from ffbox0-bg.mplayerhq.hu (ffbox0-bg.ffmpeg.org [79.124.17.100]) by master.gitmailbox.com (Postfix) with ESMTP id 4914E468A5 for ; Thu, 21 Sep 2023 18:09:33 +0000 (UTC) Received: from [127.0.1.1] (localhost [127.0.0.1]) by ffbox0-bg.mplayerhq.hu (Postfix) with ESMTP id 694E668C933; Thu, 21 Sep 2023 21:09:23 +0300 (EEST) Received: from relay8-d.mail.gandi.net (relay8-d.mail.gandi.net [217.70.183.201]) by ffbox0-bg.mplayerhq.hu (Postfix) with ESMTPS id E028668C8DD for ; Thu, 21 Sep 2023 21:09:14 +0300 (EEST) Received: by mail.gandi.net (Postfix) with ESMTPSA id 3B05D1BF206 for ; Thu, 21 Sep 2023 18:09:13 +0000 (UTC) From: Michael Niedermayer To: FFmpeg development discussions and patches Date: Thu, 21 Sep 2023 20:09:08 +0200 Message-Id: <20230921180912.10733-2-michael@niedermayer.cc> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20230921180912.10733-1-michael@niedermayer.cc> References: <20230921180912.10733-1-michael@niedermayer.cc> X-GND-Sasl: michael@niedermayer.cc Subject: [FFmpeg-devel] [PATCH 2/6] avcodec/wavarc: Fix integer overflwo in do_stereo() X-BeenThere: ffmpeg-devel@ffmpeg.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: FFmpeg development discussions and patches List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Reply-To: FFmpeg development discussions and patches MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: ffmpeg-devel-bounces@ffmpeg.org Sender: "ffmpeg-devel" Archived-At: List-Archive: List-Post: Fixes: signed integer overflow: 148676193 - -2006512262 cannot be represented in type 'int' Fixes: 62164/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_WAVARC_fuzzer-5963163952349184 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer --- libavcodec/wavarc.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/libavcodec/wavarc.c b/libavcodec/wavarc.c index b954e8800cd..48c673fdea4 100644 --- a/libavcodec/wavarc.c +++ b/libavcodec/wavarc.c @@ -154,11 +154,11 @@ static void do_stereo(WavArcContext *s, int ch, int correlated, int len) } else { if (correlated) { for (int n = 0; n < nb_samples; n++) - s->samples[1][n + len] += s->samples[0][n + len]; + s->samples[1][n + len] += (unsigned)s->samples[0][n + len]; } for (int n = 0; n < len; n++) { s->pred[0][n] = s->samples[1][nb_samples + n]; - s->pred[1][n] = s->pred[0][n] - s->samples[0][nb_samples + n]; + s->pred[1][n] = s->pred[0][n] - (unsigned)s->samples[0][nb_samples + n]; } } } -- 2.17.1 _______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-devel To unsubscribe, visit link above, or email ffmpeg-devel-request@ffmpeg.org with subject "unsubscribe".