From patchwork Thu Oct 8 19:19:15 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Michael Niedermayer X-Patchwork-Id: 22764 Return-Path: X-Original-To: patchwork@ffaux-bg.ffmpeg.org Delivered-To: patchwork@ffaux-bg.ffmpeg.org Received: from ffbox0-bg.mplayerhq.hu (ffbox0-bg.ffmpeg.org [79.124.17.100]) by ffaux.localdomain (Postfix) with ESMTP id BA95D448D49 for ; Thu, 8 Oct 2020 22:26:03 +0300 (EEST) Received: from [127.0.1.1] (localhost [127.0.0.1]) by ffbox0-bg.mplayerhq.hu (Postfix) with ESMTP id 9AA6468B90F; Thu, 8 Oct 2020 22:26:03 +0300 (EEST) X-Original-To: ffmpeg-devel@ffmpeg.org Delivered-To: ffmpeg-devel@ffmpeg.org Received: from vie01a-dmta-pe01-2.mx.upcmail.net (vie01a-dmta-pe01-2.mx.upcmail.net [62.179.121.155]) by ffbox0-bg.mplayerhq.hu (Postfix) with ESMTPS id 0279B68B8BD for ; Thu, 8 Oct 2020 22:25:57 +0300 (EEST) Received: from [172.31.216.235] (helo=vie01a-pemc-psmtp-pe12.mail.upcmail.net) by vie01a-dmta-pe01.mx.upcmail.net with esmtp (Exim 4.92) (envelope-from ) id 1kQbSb-0006YG-0B for ffmpeg-devel@ffmpeg.org; Thu, 08 Oct 2020 21:20:17 +0200 Received: from localhost ([213.47.68.29]) by vie01a-pemc-psmtp-pe12.mail.upcmail.net with ESMTP id QbRdkPk3mIr7GQbRdk9YJo; Thu, 08 Oct 2020 21:19:17 +0200 X-Env-Mailfrom: michael@niedermayer.cc X-Env-Rcptto: ffmpeg-devel@ffmpeg.org X-SourceIP: 213.47.68.29 X-CNFS-Analysis: v=2.3 cv=QN4WuTDL c=1 sm=1 tr=0 a=2hcxjKEKjp0CzLx6oWAm4g==:117 a=2hcxjKEKjp0CzLx6oWAm4g==:17 a=MKtGQD3n3ToA:10 a=1oJP67jkp3AA:10 a=GEAsPZ9sns4A:10 a=ZZnuYtJkoWoA:10 a=nZOtpAppAAAA:20 a=t1ufvkVAmB9wY_i4090A:9 a=nmLESqJS6t7vnWRI:21 a=GqEw55bcadVlENDI:21 a=1fhp2MxaeJtTNGEnv6mo:22 a=Z5ABNNGmrOfJ6cZ5bIyy:22 a=SsAZrZ5W_gNWK9tOzrEV:22 From: Michael Niedermayer To: FFmpeg development discussions and patches Date: Thu, 8 Oct 2020 21:19:15 +0200 Message-Id: <20201008191915.18532-3-michael@niedermayer.cc> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20201008191915.18532-1-michael@niedermayer.cc> References: <20201008191915.18532-1-michael@niedermayer.cc> X-CMAE-Envelope: MS4wfAVj1ZCIxVfL9NIjqVM8yHKUiN8zHIsqTkbaWA6jFc5+AwwCL/I8aMp6uxWhoCtVNJB++OAejkdNiMl82XaIugk83IxU/UltOP6hkxz9ne0QRv/6Hrw9 V9gRnfYxic0FrpH1ySVTg9Ve3CHPxPbwwncyeY62CEl4D9xV3uMQYlCc Subject: [FFmpeg-devel] [PATCH 3/3] avformat/flvdec: Check for EOF in amf_parse_object() 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: Timeout (too long -> 1ms) Fixes: 26108/clusterfuzz-testcase-minimized-ffmpeg_DEMUXER_fuzzer-5653887668977664 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer --- libavformat/flvdec.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/libavformat/flvdec.c b/libavformat/flvdec.c index d480d0bc67..e6786e8b38 100644 --- a/libavformat/flvdec.c +++ b/libavformat/flvdec.c @@ -493,8 +493,11 @@ static int amf_parse_object(AVFormatContext *s, AVStream *astream, double num_val; amf_date date; + num_val = 0; ioc = s->pb; + if (avio_feof(ioc)) + return AVERROR_EOF; amf_type = avio_r8(ioc); switch (amf_type) {