From patchwork Mon Feb 15 20:31:23 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Michael Niedermayer X-Patchwork-Id: 25650 Return-Path: X-Original-To: patchwork@ffaux-bg.ffmpeg.org Delivered-To: patchwork@ffaux-bg.ffmpeg.org Received: from ffbox0-bg.mplayerhq.hu (ffbox0-bg.ffmpeg.org [79.124.17.100]) by ffaux.localdomain (Postfix) with ESMTP id D7FBB44A61E for ; Mon, 15 Feb 2021 22:32:29 +0200 (EET) Received: from [127.0.1.1] (localhost [127.0.0.1]) by ffbox0-bg.mplayerhq.hu (Postfix) with ESMTP id BADCF6880F8; Mon, 15 Feb 2021 22:32:29 +0200 (EET) X-Original-To: ffmpeg-devel@ffmpeg.org Delivered-To: ffmpeg-devel@ffmpeg.org Received: from vie01a-dmta-pe03-1.mx.upcmail.net (vie01a-dmta-pe03-1.mx.upcmail.net [62.179.121.160]) by ffbox0-bg.mplayerhq.hu (Postfix) with ESMTPS id 57924680901 for ; Mon, 15 Feb 2021 22:32:23 +0200 (EET) Received: from [172.31.216.235] (helo=vie01a-pemc-psmtp-pe12.mail.upcmail.net) by vie01a-dmta-pe03.mx.upcmail.net with esmtp (Exim 4.92) (envelope-from ) id 1lBkXf-0007EY-01 for ffmpeg-devel@ffmpeg.org; Mon, 15 Feb 2021 21:32:23 +0100 Received: from localhost ([213.47.68.29]) by vie01a-pemc-psmtp-pe12.mail.upcmail.net with ESMTP id BkWhlfJT9ljeHBkWhl2O4A; Mon, 15 Feb 2021 21:31:23 +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=BoHjPrf5 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=nZOtpAppAAAA:20 a=BYKNgTJVevE87BHrMCkA:9 a=VlZU0XKO32wA:10 a=1fhp2MxaeJtTNGEnv6mo:22 a=Z5ABNNGmrOfJ6cZ5bIyy:22 a=bWyr8ysk75zN3GCy5bjg:22 From: Michael Niedermayer To: FFmpeg development discussions and patches Date: Mon, 15 Feb 2021 21:31:23 +0100 Message-Id: <20210215203123.10676-1-michael@niedermayer.cc> X-Mailer: git-send-email 2.17.1 X-CMAE-Envelope: MS4wfHQtG6VvAVm13lvJ4PUKGR6JJ9eqjwWSe1aQUiphbjcxl8H9ORKUSGkDZkY6JURiMn+j8La+Pp5qMFBop6vrnqHYAU+OTlBF/SiwFpQ0CnczhomUeJj1 qtRohcqBHlJqQigoUEZJDdJ7wlRQ8vmS1lMSRrDKwv5kHOTqvbWPVfvc Subject: [FFmpeg-devel] [PATCH] avformat/vividas: Use signed n in read_sb_block() X-BeenThere: ffmpeg-devel@ffmpeg.org X-Mailman-Version: 2.1.20 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 Errors-To: ffmpeg-devel-bounces@ffmpeg.org Sender: "ffmpeg-devel" Fixes: OOM Fixes: 27780/clusterfuzz-testcase-minimized-ffmpeg_dem_VIVIDAS_fuzzer-5097985075314688 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer --- libavformat/vividas.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/libavformat/vividas.c b/libavformat/vividas.c index d745770dc4..b172a48b29 100644 --- a/libavformat/vividas.c +++ b/libavformat/vividas.c @@ -235,7 +235,7 @@ static uint8_t *read_sb_block(AVIOContext *src, unsigned *size, uint8_t *buf; uint8_t ibuf[8], sbuf[8]; uint32_t k2; - unsigned n; + int n; if (avio_read(src, ibuf, 8) < 8) return NULL;