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 A763947229 for ; Sat, 30 Sep 2023 22:32:53 +0000 (UTC) Received: from [127.0.1.1] (localhost [127.0.0.1]) by ffbox0-bg.mplayerhq.hu (Postfix) with ESMTP id 4A16B68CDA0; Sun, 1 Oct 2023 01:31:09 +0300 (EEST) Received: from relay6-d.mail.gandi.net (relay6-d.mail.gandi.net [217.70.183.198]) by ffbox0-bg.mplayerhq.hu (Postfix) with ESMTPS id E619968CD72 for ; Sun, 1 Oct 2023 01:30:56 +0300 (EEST) Received: by mail.gandi.net (Postfix) with ESMTPSA id 501DAC0004 for ; Sat, 30 Sep 2023 22:30:56 +0000 (UTC) From: Michael Niedermayer To: FFmpeg development discussions and patches Date: Sun, 1 Oct 2023 00:30:41 +0200 Message-Id: <20230930223046.22896-10-michael@niedermayer.cc> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20230930223046.22896-1-michael@niedermayer.cc> References: <20230930223046.22896-1-michael@niedermayer.cc> X-GND-Sasl: michael@niedermayer.cc Subject: [FFmpeg-devel] [PATCH 10/15] avformat/wavdec: Check left avio_tell for overflow 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: 155 + 9223372036854775655 cannot be represented in type 'long' Fixes: 51896/clusterfuzz-testcase-minimized-ffmpeg_dem_W64_fuzzer-5364032278495232 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer --- libavformat/wavdec.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/libavformat/wavdec.c b/libavformat/wavdec.c index 97e69ab2ee4..b145e980414 100644 --- a/libavformat/wavdec.c +++ b/libavformat/wavdec.c @@ -767,6 +767,8 @@ smv_out: goto smv_retry; return AVERROR_EOF; } + if (INT64_MAX - left < avio_tell(s->pb)) + return AVERROR_INVALIDDATA; wav->data_end = avio_tell(s->pb) + left; } -- 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".