From patchwork Sat Aug 10 21:09:42 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Michael Niedermayer X-Patchwork-Id: 14389 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 E652F44A476 for ; Sun, 11 Aug 2019 00:17:50 +0300 (EEST) Received: from [127.0.1.1] (localhost [127.0.0.1]) by ffbox0-bg.mplayerhq.hu (Postfix) with ESMTP id D194268ABCE; Sun, 11 Aug 2019 00:17:50 +0300 (EEST) X-Original-To: ffmpeg-devel@ffmpeg.org Delivered-To: ffmpeg-devel@ffmpeg.org Received: from vie01a-dmta-pe05-1.mx.upcmail.net (vie01a-dmta-pe05-1.mx.upcmail.net [84.116.36.11]) by ffbox0-bg.mplayerhq.hu (Postfix) with ESMTPS id 28CB868ABCC for ; Sun, 11 Aug 2019 00:17:49 +0300 (EEST) Received: from [172.31.216.235] (helo=vie01a-pemc-psmtp-pe12.mail.upcmail.net) by vie01a-dmta-pe05.mx.upcmail.net with esmtp (Exim 4.92) (envelope-from ) id 1hwYeE-000919-2w for ffmpeg-devel@ffmpeg.org; Sat, 10 Aug 2019 23:11:34 +0200 Received: from localhost ([213.47.41.20]) by vie01a-pemc-psmtp-pe12.mail.upcmail.net with ESMTP id wYdEh60PewlyswYdEhrKeZ; Sat, 10 Aug 2019 23:10:32 +0200 X-Env-Mailfrom: michael@niedermayer.cc X-Env-Rcptto: ffmpeg-devel@ffmpeg.org X-SourceIP: 213.47.41.20 X-CNFS-Analysis: v=2.3 cv=E5OzWpVl c=1 sm=1 tr=0 a=I1eytVlZLDX1BM2VTtTtSw==:117 a=I1eytVlZLDX1BM2VTtTtSw==:17 a=MKtGQD3n3ToA:10 a=1oJP67jkp3AA:10 a=GEAsPZ9sns4A:10 a=ZZnuYtJkoWoA:10 a=nZOtpAppAAAA:20 a=fQlzEN-sq1-rzbliGhsA:9 a=1fhp2MxaeJtTNGEnv6mo:22 a=Z5ABNNGmrOfJ6cZ5bIyy:22 a=bWyr8ysk75zN3GCy5bjg:22 From: Michael Niedermayer To: FFmpeg development discussions and patches Date: Sat, 10 Aug 2019 23:09:42 +0200 Message-Id: <20190810210949.1743-1-michael@niedermayer.cc> X-Mailer: git-send-email 2.22.0 MIME-Version: 1.0 X-CMAE-Envelope: MS4wfL9I5ndg/tVO0k0LyDcbbrwsJsHijob2a/D8FVpVEy0hjs0EZy8Rha4pswx6zG9SGfp84Zisnuh/NdFpfGeewjokqQ6mOABvKszAVtSFue607LffjnUc 6jl5kVvMJaf2SZk/cLoaunu8/0E0XV/m//2hBagAz+be4YF3ERWTzV7/ Subject: [FFmpeg-devel] [PATCH 1/8] avcodec/mpc8: Fix 32bit mask/enum 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: left shift of 1 by 31 places cannot be represented in type 'int' Fixes: 15817/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_MPC8_fuzzer-5636626409062400 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer --- libavcodec/mpc8.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/libavcodec/mpc8.c b/libavcodec/mpc8.c index d7baac2f04..03838a9351 100644 --- a/libavcodec/mpc8.c +++ b/libavcodec/mpc8.c @@ -62,7 +62,7 @@ static inline int mpc8_dec_enum(GetBitContext *gb, int k, int n) do { n--; if (code >= C[n]) { - bits |= 1 << n; + bits |= 1U << n; code -= C[n]; C -= 32; k--;