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 A4DF247158 for ; Sun, 10 Sep 2023 01:10:13 +0000 (UTC) Received: from [127.0.1.1] (localhost [127.0.0.1]) by ffbox0-bg.mplayerhq.hu (Postfix) with ESMTP id CFFE368C8B9; Sun, 10 Sep 2023 04:10:02 +0300 (EEST) Received: from relay8-d.mail.gandi.net (relay8-d.mail.gandi.net [217.70.183.201]) by ffbox0-bg.mplayerhq.hu (Postfix) with ESMTPS id E35E568C49B for ; Sun, 10 Sep 2023 04:09:55 +0300 (EEST) Received: by mail.gandi.net (Postfix) with ESMTPSA id 213271BF203 for ; Sun, 10 Sep 2023 01:09:54 +0000 (UTC) From: Michael Niedermayer To: FFmpeg development discussions and patches Date: Sun, 10 Sep 2023 03:09:51 +0200 Message-Id: <20230910010952.24389-2-michael@niedermayer.cc> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20230910010952.24389-1-michael@niedermayer.cc> References: <20230910010952.24389-1-michael@niedermayer.cc> X-GND-Sasl: michael@niedermayer.cc Subject: [FFmpeg-devel] [PATCH 2/3] avformat/jpegxl_anim_dec: Check that size fits within argument 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: out of array access Fixes: 61991/clusterfuzz-testcase-minimized-ffmpeg_dem_JPEGXL_ANIM_fuzzer-5524679648215040 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer --- libavformat/jpegxl_anim_dec.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/libavformat/jpegxl_anim_dec.c b/libavformat/jpegxl_anim_dec.c index fc95a1781f6..54cd6e4e9d6 100644 --- a/libavformat/jpegxl_anim_dec.c +++ b/libavformat/jpegxl_anim_dec.c @@ -152,6 +152,8 @@ static int jpegxl_anim_read_packet(AVFormatContext *s, AVPacket *pkt) size = avio_size(pb); if (size < 0) return size; + if (size > INT_MAX) + return AVERROR(EDOM); if (size == 0) size = 4096; -- 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".