From patchwork Tue Oct 20 20:56:13 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Michael Niedermayer X-Patchwork-Id: 23117 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 A470844A728 for ; Tue, 20 Oct 2020 23:57:29 +0300 (EEST) Received: from [127.0.1.1] (localhost [127.0.0.1]) by ffbox0-bg.mplayerhq.hu (Postfix) with ESMTP id 8E27E68B784; Tue, 20 Oct 2020 23:57:29 +0300 (EEST) X-Original-To: ffmpeg-devel@ffmpeg.org Delivered-To: ffmpeg-devel@ffmpeg.org Received: from vie01a-dmta-pe02-1.mx.upcmail.net (vie01a-dmta-pe02-1.mx.upcmail.net [62.179.121.157]) by ffbox0-bg.mplayerhq.hu (Postfix) with ESMTPS id 7069968B50A for ; Tue, 20 Oct 2020 23:57:21 +0300 (EEST) Received: from [172.31.216.235] (helo=vie01a-pemc-psmtp-pe12.mail.upcmail.net) by vie01a-dmta-pe02.mx.upcmail.net with esmtp (Exim 4.92) (envelope-from ) id 1kUyh6-0007YK-0I for ffmpeg-devel@ffmpeg.org; Tue, 20 Oct 2020 22:57:20 +0200 Received: from localhost ([213.47.68.29]) by vie01a-pemc-psmtp-pe12.mail.upcmail.net with ESMTP id Uyg8k0zP4Ir7GUyg8kAXXL; Tue, 20 Oct 2020 22:56:20 +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=xZ5kvSrnTjKnUzCt5mwA:9 a=1fhp2MxaeJtTNGEnv6mo:22 a=Z5ABNNGmrOfJ6cZ5bIyy:22 a=UDnyf2zBuKT2w-IlGP_r:22 From: Michael Niedermayer To: FFmpeg development discussions and patches Date: Tue, 20 Oct 2020 22:56:13 +0200 Message-Id: <20201020205619.7939-5-michael@niedermayer.cc> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20201020205619.7939-1-michael@niedermayer.cc> References: <20201020205619.7939-1-michael@niedermayer.cc> X-CMAE-Envelope: MS4wfHT6vtSFcLOBb779qPqrNZqkrgT4ZEcxQfdqLp0x49S7fMRjxrdiQdzFvKtptqdT/jXiihqwjCEx4jMe8PjngCPXDy6D2z+PoIK/4WG9O3T/lRgIwvy9 VlT1QVQBcWsjc2PTnVoATviF4kLcuJoJaKE2YAPVIjRLdvjctzEw11yM Subject: [FFmpeg-devel] [PATCH 05/11] avformat/ffmetadec: finalize AVBPrint on errors 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: memleak Fixes: 26450/clusterfuzz-testcase-minimized-ffmpeg_dem_FFMETADATA_fuzzer-6249850443923456 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer --- libavformat/ffmetadec.c | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-) diff --git a/libavformat/ffmetadec.c b/libavformat/ffmetadec.c index 0ea89fe3f3..9fcba08490 100644 --- a/libavformat/ffmetadec.c +++ b/libavformat/ffmetadec.c @@ -185,7 +185,7 @@ static int read_header(AVFormatContext *s) AVStream *st = avformat_new_stream(s, NULL); if (!st) - return AVERROR(ENOMEM); + goto nomem; st->codecpar->codec_type = AVMEDIA_TYPE_DATA; st->codecpar->codec_id = AV_CODEC_ID_FFMETADATA; @@ -195,7 +195,7 @@ static int read_header(AVFormatContext *s) AVChapter *ch = read_chapter(s); if (!ch) - return AVERROR(ENOMEM); + goto nomem; m = &ch->metadata; } else @@ -211,6 +211,10 @@ static int read_header(AVFormatContext *s) AV_TIME_BASE_Q); return 0; +nomem: + av_bprint_finalize(&bp, NULL); + + return AVERROR(ENOMEM); } static int read_packet(AVFormatContext *s, AVPacket *pkt)