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 31D8543B72 for ; Sat, 17 Sep 2022 21:16:09 +0000 (UTC) Received: from [127.0.1.1] (localhost [127.0.0.1]) by ffbox0-bg.mplayerhq.hu (Postfix) with ESMTP id A706368BB99; Sun, 18 Sep 2022 00:16:06 +0300 (EEST) Received: from vie01a-dmta-at02-3.mx.upcmail.net (vie01a-dmta-at02-3.mx.upcmail.net [62.179.121.150]) by ffbox0-bg.mplayerhq.hu (Postfix) with ESMTPS id A2EC068B9C0 for ; Sun, 18 Sep 2022 00:15:59 +0300 (EEST) Received: from [172.31.216.235] (helo=vie01a-pemc-psmtp-pe12.mail.upcmail.net) by vie01a-dmta-at02.mx.upcmail.net with esmtp (Exim 4.92) (envelope-from ) id 1oZfAM-00350M-Kf for ffmpeg-devel@ffmpeg.org; Sat, 17 Sep 2022 23:15:58 +0200 Received: from ren-mail-psmtp-mg01. ([80.109.253.241]) by vie01a-pemc-psmtp-pe12.mail.upcmail.net with ESMTP id Zf9moPPmn8s8UZfAMoEt86; Sat, 17 Sep 2022 23:15:58 +0200 Received: from localhost ([213.47.68.29]) by ren-mail-psmtp-mg01. with ESMTP id ZfALoibKMOG5ZZfALom24N; Sat, 17 Sep 2022 23:15:57 +0200 X-Env-Mailfrom: michael@niedermayer.cc X-Env-Rcptto: ffmpeg-devel@ffmpeg.org X-SourceIP: 213.47.68.29 X-CNFS-Analysis: v=2.4 cv=KJo5sHJo c=1 sm=1 tr=0 ts=6326390e a=2hcxjKEKjp0CzLx6oWAm4g==:117 a=2hcxjKEKjp0CzLx6oWAm4g==:17 a=MKtGQD3n3ToA:10 a=1oJP67jkp3AA:10 a=GEAsPZ9sns4A:10 a=NEAV23lmAAAA:8 a=NIjpAlihMiSmCakebC4A:9 From: Michael Niedermayer To: FFmpeg development discussions and patches Date: Sat, 17 Sep 2022 23:15:49 +0200 Message-Id: <20220917211557.11547-1-michael@niedermayer.cc> X-Mailer: git-send-email 2.17.1 X-CMAE-Envelope: MS4wfE9fZPqyOvB56wBnmFJoAeXs0Ut08ojTc7zBz/CuMTKjnK6UGJnxpbBUuqrae7bNgMSA7mY4USXQGvoLDGjuAR+mSCGOLNBotLYWvRLLmJlDJo24D+UV hFG6EwZw+j8mUyufxMs8OWl2XlbJmEWlkUGDruA7/uhGshPuPs7zi61/txCk9C+IUN4MIRwaoC8e6Q== Subject: [FFmpeg-devel] [PATCH 1/9] avformat/ape: Check frames size 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: 9223372036854775806 + 3 cannot be represented in type 'long' Fixes: 50993/clusterfuzz-testcase-minimized-ffmpeg_dem_APE_fuzzer-6389264140599296 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer --- libavformat/ape.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/libavformat/ape.c b/libavformat/ape.c index f904fde178c..92e9ac7cb1c 100644 --- a/libavformat/ape.c +++ b/libavformat/ape.c @@ -298,6 +298,8 @@ static int ape_read_header(AVFormatContext * s) ape->frames[i].pos -= ape->frames[i].skip; ape->frames[i].size += ape->frames[i].skip; } + if (ape->frames[i].size > INT_MAX - 3) + return AVERROR_INVALIDDATA; ape->frames[i].size = (ape->frames[i].size + 3) & ~3; } if (ape->fileversion < 3810) { -- 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".