From patchwork Thu Mar 9 03:07:34 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Michael Niedermayer X-Patchwork-Id: 2847 Delivered-To: ffmpegpatchwork@gmail.com Received: by 10.103.50.79 with SMTP id y76csp144837vsy; Wed, 8 Mar 2017 19:07:48 -0800 (PST) X-Received: by 10.28.107.13 with SMTP id g13mr8249557wmc.105.1489028868687; Wed, 08 Mar 2017 19:07:48 -0800 (PST) Return-Path: Received: from ffbox0-bg.mplayerhq.hu (ffbox0-bg.ffmpeg.org. [79.124.17.100]) by mx.google.com with ESMTP id 17si2521123wmv.65.2017.03.08.19.07.48; Wed, 08 Mar 2017 19:07:48 -0800 (PST) Received-SPF: pass (google.com: domain of ffmpeg-devel-bounces@ffmpeg.org designates 79.124.17.100 as permitted sender) client-ip=79.124.17.100; Authentication-Results: mx.google.com; spf=pass (google.com: domain of ffmpeg-devel-bounces@ffmpeg.org designates 79.124.17.100 as permitted sender) smtp.mailfrom=ffmpeg-devel-bounces@ffmpeg.org Received: from [127.0.1.1] (localhost [127.0.0.1]) by ffbox0-bg.mplayerhq.hu (Postfix) with ESMTP id 1E3C9688271; Thu, 9 Mar 2017 05:07:31 +0200 (EET) X-Original-To: ffmpeg-devel@ffmpeg.org Delivered-To: ffmpeg-devel@ffmpeg.org Received: from vie01a-dmta-pe01-1.mx.upcmail.net (vie01a-dmta-pe01-1.mx.upcmail.net [62.179.121.154]) by ffbox0-bg.mplayerhq.hu (Postfix) with ESMTPS id 5DEA168075B for ; Thu, 9 Mar 2017 05:07:25 +0200 (EET) Received: from [172.31.216.43] (helo=vie01a-pemc-psmtp-pe01) by vie01a-dmta-pe01.mx.upcmail.net with esmtp (Exim 4.87) (envelope-from ) id 1cloQU-0003cG-Hx for ffmpeg-devel@ffmpeg.org; Thu, 09 Mar 2017 04:07:38 +0100 Received: from localhost ([213.47.41.20]) by vie01a-pemc-psmtp-pe01 with SMTP @ mailcloud.upcmail.net id tf7c1u00M0S5wYM01f7dCp; Thu, 09 Mar 2017 04:07:37 +0100 X-SourceIP: 213.47.41.20 From: Michael Niedermayer To: FFmpeg development discussions and patches Date: Thu, 9 Mar 2017 04:07:34 +0100 Message-Id: <20170309030735.26598-1-michael@niedermayer.cc> X-Mailer: git-send-email 2.11.0 Subject: [FFmpeg-devel] [PATCH 1/2] avcodec/h264_direct: Fix runtime error: signed integer overflow: 2147483647 - -14133 cannot be represented in type 'int' X-BeenThere: ffmpeg-devel@ffmpeg.org X-Mailman-Version: 2.1.20 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 Errors-To: ffmpeg-devel-bounces@ffmpeg.org Sender: "ffmpeg-devel" Fixes: 755/clusterfuzz-testcase-5369072516595712 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/targets/ffmpeg Signed-off-by: Michael Niedermayer --- libavcodec/h264_direct.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/libavcodec/h264_direct.c b/libavcodec/h264_direct.c index cbb84665b3..798cb10c2b 100644 --- a/libavcodec/h264_direct.c +++ b/libavcodec/h264_direct.c @@ -39,7 +39,7 @@ static int get_scale_factor(H264SliceContext *sl, int poc, int poc1, int i) { int poc0 = sl->ref_list[0][i].poc; - int td = av_clip_int8(poc1 - poc0); + int td = av_clip_int8(poc1 - (SUINT)poc0); if (td == 0 || sl->ref_list[0][i].parent->long_ref) { return 256; } else {