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 0F88B40136 for ; Sun, 5 Mar 2023 11:44:04 +0000 (UTC) Received: from [127.0.1.1] (localhost [127.0.0.1]) by ffbox0-bg.mplayerhq.hu (Postfix) with ESMTP id 26A6568B940; Sun, 5 Mar 2023 13:43:56 +0200 (EET) Received: from relay2-d.mail.gandi.net (relay2-d.mail.gandi.net [217.70.183.194]) by ffbox0-bg.mplayerhq.hu (Postfix) with ESMTPS id 8D7C968B14C for ; Sun, 5 Mar 2023 13:43:49 +0200 (EET) Received: (Authenticated sender: michael@niedermayer.cc) by mail.gandi.net (Postfix) with ESMTPSA id B6E0140003 for ; Sun, 5 Mar 2023 11:43:48 +0000 (UTC) From: Michael Niedermayer To: FFmpeg development discussions and patches Date: Sun, 5 Mar 2023 12:43:46 +0100 Message-Id: <20230305114346.19875-2-michael@niedermayer.cc> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20230305114346.19875-1-michael@niedermayer.cc> References: <20230305114346.19875-1-michael@niedermayer.cc> Subject: [FFmpeg-devel] [PATCH 2/2] avformat/wavdec: Check that smv block fits in available space 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: OOM Fixes: 56271/clusterfuzz-testcase-minimized-ffmpeg_dem_WAV_fuzzer-5290810045497344 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer --- libavformat/wavdec.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/libavformat/wavdec.c b/libavformat/wavdec.c index e3f790fcc9..97e69ab2ee 100644 --- a/libavformat/wavdec.c +++ b/libavformat/wavdec.c @@ -730,6 +730,10 @@ smv_retry: goto smv_out; } size = avio_rl24(s->pb); + if (size > wav->smv_block_size) { + ret = AVERROR_EOF; + goto smv_out; + } ret = av_get_packet(s->pb, pkt, size); if (ret < 0) goto smv_out; -- 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".