From patchwork Sat Jun 13 11:23:42 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Michael Niedermayer X-Patchwork-Id: 20324 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 31C5C44B245 for ; Sat, 13 Jun 2020 14:30:16 +0300 (EEST) Received: from [127.0.1.1] (localhost [127.0.0.1]) by ffbox0-bg.mplayerhq.hu (Postfix) with ESMTP id 1636F68B31C; Sat, 13 Jun 2020 14:30:16 +0300 (EEST) 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 893CD68AA89 for ; Sat, 13 Jun 2020 14:30:09 +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 1jk4HH-00070z-0G for ffmpeg-devel@ffmpeg.org; Sat, 13 Jun 2020 13:24:47 +0200 Received: from localhost ([213.47.68.29]) by vie01a-pemc-psmtp-pe12.mail.upcmail.net with ESMTP id k4GIjOekn6Jy6k4GJjdjg9; Sat, 13 Jun 2020 13:23:47 +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=GKl27dFK 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=n56v0SaebGItXFOb_JQA:9 a=1fhp2MxaeJtTNGEnv6mo:22 a=Z5ABNNGmrOfJ6cZ5bIyy:22 a=UDnyf2zBuKT2w-IlGP_r:22 From: Michael Niedermayer To: FFmpeg development discussions and patches Date: Sat, 13 Jun 2020 13:23:42 +0200 Message-Id: <20200613112345.13515-2-michael@niedermayer.cc> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20200613112345.13515-1-michael@niedermayer.cc> References: <20200613112345.13515-1-michael@niedermayer.cc> X-CMAE-Envelope: MS4wfE43Zd6IQCdXvPta5d5aq07lEnKQEcP+kYHGFPPwKPzqGpZXc63NyuImlvRjEvqWWVbm8weigXLyXwZhmPiAWR6NmkoeNKgkw0kFVZ1lzYtGb8UvxvLj UQIp09McRbjwiBttcsHi1tU1QwrFZv2MQ+/tzGeusaw4O0B4Lz7P27TG Subject: [FFmpeg-devel] [PATCH 2/5] avformat/ape: Cleanup after ape_read_header() failure 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: memleaks Fixes: 23306/clusterfuzz-testcase-minimized-ffmpeg_DEMUXER_fuzzer-5635436931448832 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer --- libavformat/ape.c | 26 +++++++++++++++++++------- 1 file changed, 19 insertions(+), 7 deletions(-) diff --git a/libavformat/ape.c b/libavformat/ape.c index ed6752a415..39a584aa98 100644 --- a/libavformat/ape.c +++ b/libavformat/ape.c @@ -83,6 +83,8 @@ typedef struct APEContext { uint8_t *bittable; } APEContext; +static int ape_read_close(AVFormatContext * s); + static int ape_probe(const AVProbeData * p) { int version = AV_RL16(p->buf+4); @@ -281,14 +283,18 @@ static int ape_read_header(AVFormatContext * s) if (ape->seektablelength > 0) { ape->seektable = av_mallocz(ape->seektablelength); - if (!ape->seektable) - return AVERROR(ENOMEM); + if (!ape->seektable) { + ret = AVERROR(ENOMEM); + goto fail; + } for (i = 0; i < ape->seektablelength / sizeof(uint32_t) && !pb->eof_reached; i++) ape->seektable[i] = avio_rl32(pb); if (ape->fileversion < 3810) { ape->bittable = av_mallocz(ape->totalframes); - if (!ape->bittable) - return AVERROR(ENOMEM); + if (!ape->bittable) { + ret = AVERROR(ENOMEM); + goto fail; + } for (i = 0; i < ape->totalframes && !pb->eof_reached; i++) ape->bittable[i] = avio_r8(pb); } @@ -341,8 +347,10 @@ static int ape_read_header(AVFormatContext * s) /* now we are ready: build format streams */ st = avformat_new_stream(s, NULL); - if (!st) - return AVERROR(ENOMEM); + if (!st) { + ret = AVERROR(ENOMEM); + goto fail; + } total_blocks = (ape->totalframes == 0) ? 0 : ((ape->totalframes - 1) * ape->blocksperframe) + ape->finalframeblocks; @@ -359,7 +367,7 @@ static int ape_read_header(AVFormatContext * s) avpriv_set_pts_info(st, 64, 1, ape->samplerate); if ((ret = ff_alloc_extradata(st->codecpar, APE_EXTRADATA_SIZE)) < 0) - return ret; + goto fail; AV_WL16(st->codecpar->extradata + 0, ape->fileversion); AV_WL16(st->codecpar->extradata + 2, ape->compressiontype); AV_WL16(st->codecpar->extradata + 4, ape->formatflags); @@ -378,6 +386,10 @@ static int ape_read_header(AVFormatContext * s) } return 0; +fail: + ape_read_close(s); + + return ret; } static int ape_read_packet(AVFormatContext * s, AVPacket * pkt)