From patchwork Sun Oct 20 23:20:56 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Michael Niedermayer X-Patchwork-Id: 15869 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 7D8F644A369 for ; Mon, 21 Oct 2019 02:23:07 +0300 (EEST) Received: from [127.0.1.1] (localhost [127.0.0.1]) by ffbox0-bg.mplayerhq.hu (Postfix) with ESMTP id 6C7C768AFD8; Mon, 21 Oct 2019 02:23:07 +0300 (EEST) 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 245A368AFD0 for ; Mon, 21 Oct 2019 02:23:00 +0300 (EEST) 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 1iMKXL-0004SA-0z for ffmpeg-devel@ffmpeg.org; Mon, 21 Oct 2019 01:22:59 +0200 Received: from localhost ([213.47.68.29]) by vie01a-pemc-psmtp-pe12.mail.upcmail.net with ESMTP id MKWMiNToywlysMKWMieoJ9; Mon, 21 Oct 2019 01:21:59 +0200 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=E5OzWpVl 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=569lr7mtMaES6HKRPBcA:9 a=1fhp2MxaeJtTNGEnv6mo:22 a=Z5ABNNGmrOfJ6cZ5bIyy:22 a=jd6J4Gguk5HxikPWLKER:22 From: Michael Niedermayer To: FFmpeg development discussions and patches Date: Mon, 21 Oct 2019 01:20:56 +0200 Message-Id: <20191020232059.19471-1-michael@niedermayer.cc> X-Mailer: git-send-email 2.23.0 MIME-Version: 1.0 X-CMAE-Envelope: MS4wfLpE2KBbAMxmLYaCDPS9Qic6xY6bf9rwFmIQlL9zOywIYdK5kFD661F3lp58UYlGIU4tWz4mm8TyJKekNNLdYxpZ0dT3pa3EmVyvMLzZ6HJcI9k6OuSd AYPrsMBxCi7/uZIboA8kErz675xDvJQW7hFg8cW/mrgEiwrRjYgbNvzB Subject: [FFmpeg-devel] [PATCH 1/4] avcodec/rawdec: Check bits_per_coded_sample more pedantically for 16bit cases 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 Errors-To: ffmpeg-devel-bounces@ffmpeg.org Sender: "ffmpeg-devel" Fixes: shift exponent -14 is negative Fixes: 18335/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_RAWVIDEO_fuzzer-5723267192586240 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer --- libavcodec/rawdec.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/libavcodec/rawdec.c b/libavcodec/rawdec.c index 53f5b76e93..0b2d8708e6 100644 --- a/libavcodec/rawdec.c +++ b/libavcodec/rawdec.c @@ -223,7 +223,7 @@ static int raw_decode(AVCodecContext *avctx, void *data, int *got_frame, FFALIGN(avctx->width, 16), avctx->height, 1); } else { - context->is_lt_16bpp = av_get_bits_per_pixel(desc) == 16 && avctx->bits_per_coded_sample && avctx->bits_per_coded_sample < 16; + context->is_lt_16bpp = av_get_bits_per_pixel(desc) == 16 && avctx->bits_per_coded_sample > 8 && avctx->bits_per_coded_sample < 16; context->frame_size = av_image_get_buffer_size(avctx->pix_fmt, avctx->width, avctx->height, 1); }