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 CA06147303 for ; Tue, 5 Sep 2023 02:04:08 +0000 (UTC) Received: from [127.0.1.1] (localhost [127.0.0.1]) by ffbox0-bg.mplayerhq.hu (Postfix) with ESMTP id 2260168C7C6; Tue, 5 Sep 2023 05:04:06 +0300 (EEST) Received: from relay6-d.mail.gandi.net (relay6-d.mail.gandi.net [217.70.183.198]) by ffbox0-bg.mplayerhq.hu (Postfix) with ESMTPS id 144D168C68A for ; Tue, 5 Sep 2023 05:04:00 +0300 (EEST) Received: by mail.gandi.net (Postfix) with ESMTPSA id 2B07DC0006 for ; Tue, 5 Sep 2023 02:03:58 +0000 (UTC) From: Michael Niedermayer To: FFmpeg development discussions and patches Date: Tue, 5 Sep 2023 04:03:57 +0200 Message-Id: <20230905020358.32527-1-michael@niedermayer.cc> X-Mailer: git-send-email 2.17.1 X-GND-Sasl: michael@niedermayer.cc Subject: [FFmpeg-devel] [PATCH 1/2] avcodec/vmixdec: Fix signed integer overflow in dc 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: 2147483181 + 1024 cannot be represented in type 'int' Fixes: 61117/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_VMIX_fuzzer-5387692433866752 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer --- libavcodec/vmixdec.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/libavcodec/vmixdec.c b/libavcodec/vmixdec.c index b77c90929a..8f2278b2ea 100644 --- a/libavcodec/vmixdec.c +++ b/libavcodec/vmixdec.c @@ -134,7 +134,7 @@ static int decode_dcac(AVCodecContext *avctx, ac_run = get_ue_golomb_long(ac_gb); } - block[0] = dc + add; + block[0] = dc + (unsigned)add; s->idsp.idct_put(dst + x, linesize, block); } -- 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".