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 955084085E for ; Thu, 23 Dec 2021 21:16:47 +0000 (UTC) Received: from [127.0.1.1] (localhost [127.0.0.1]) by ffbox0-bg.mplayerhq.hu (Postfix) with ESMTP id 3BB7468B1C8; Thu, 23 Dec 2021 23:16:36 +0200 (EET) Received: from vie01a-dmta-pe04-1.mx.upcmail.net (vie01a-dmta-pe04-1.mx.upcmail.net [62.179.121.163]) by ffbox0-bg.mplayerhq.hu (Postfix) with ESMTPS id 8B38C68B192 for ; Thu, 23 Dec 2021 23:16:28 +0200 (EET) Received: from [172.31.216.235] (helo=vie01a-pemc-psmtp-pe12.mail.upcmail.net) by vie01a-dmta-pe04.mx.upcmail.net with esmtp (Exim 4.92) (envelope-from ) id 1n0VRs-00G7AT-0F for ffmpeg-devel@ffmpeg.org; Thu, 23 Dec 2021 22:16:28 +0100 Received: from localhost ([213.47.68.29]) by vie01a-pemc-psmtp-pe12.mail.upcmail.net with ESMTP id 0VQunM8MMSgGF0VQunabYM; Thu, 23 Dec 2021 22:15:28 +0100 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=f8Q2+96M 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=NEAV23lmAAAA:8 a=GNbjFuMf3N3Jl0flRs4A:9 From: Michael Niedermayer To: FFmpeg development discussions and patches Date: Thu, 23 Dec 2021 22:15:25 +0100 Message-Id: <20211223211527.20408-3-michael@niedermayer.cc> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20211223211527.20408-1-michael@niedermayer.cc> References: <20211223211527.20408-1-michael@niedermayer.cc> X-CMAE-Envelope: MS4wfJcCTGtosQs0tcnrCF6utPh4b7FPGgQcBTTtlULIlnhbS2gmYLQdWZYQInFu+WDmgh5n4rl9VA0ffK1CvYlGu2+ayU9KSj0MgxWsGvDhjbPy77z3VKgc esBOUieu13Ozs/rN7/r3DF+TIEfB7FFZazgeK7wy20iLl22q29G4xW9u Subject: [FFmpeg-devel] [PATCH 3/5] avformat/flvdec: timestamps cannot use the full int64 range 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: We do not support this as we multiply by 1000 Fixes: signed integer overflow: -45318575073853696 * 1000 cannot be represented in type 'long' Fixes: 42804/clusterfuzz-testcase-minimized-ffmpeg_dem_LIVE_FLV_fuzzer-4630325425209344 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer --- libavformat/flvdec.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/libavformat/flvdec.c b/libavformat/flvdec.c index 44a7e5f93cc..b9e36b3ff1b 100644 --- a/libavformat/flvdec.c +++ b/libavformat/flvdec.c @@ -461,6 +461,8 @@ static int parse_keyframes_index(AVFormatContext *s, AVIOContext *ioc, int64_t m d = av_int2double(avio_rb64(ioc)); if (isnan(d) || d < INT64_MIN || d > INT64_MAX) goto invalid; + if (current_array == × && (d <= INT64_MIN / 1000 || d >= INT64_MAX / 1000)) + goto invalid; current_array[0][i] = d; } if (times && filepositions) { -- 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".