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 0D93645D7C for ; Sun, 9 Apr 2023 14:26:55 +0000 (UTC) Received: from [127.0.1.1] (localhost [127.0.0.1]) by ffbox0-bg.mplayerhq.hu (Postfix) with ESMTP id 5DAF868BD88; Sun, 9 Apr 2023 17:26:38 +0300 (EEST) Received: from relay3-d.mail.gandi.net (relay3-d.mail.gandi.net [217.70.183.195]) by ffbox0-bg.mplayerhq.hu (Postfix) with ESMTPS id 5BA2A68AD9B for ; Sun, 9 Apr 2023 17:26:31 +0300 (EEST) Received: (Authenticated sender: michael@niedermayer.cc) by mail.gandi.net (Postfix) with ESMTPSA id 7A2B760002 for ; Sun, 9 Apr 2023 14:26:30 +0000 (UTC) From: Michael Niedermayer To: FFmpeg development discussions and patches Date: Sun, 9 Apr 2023 16:26:24 +0200 Message-Id: <20230409142627.19820-3-michael@niedermayer.cc> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20230409142627.19820-1-michael@niedermayer.cc> References: <20230409142627.19820-1-michael@niedermayer.cc> Subject: [FFmpeg-devel] [PATCH 3/6] avcodec/rka: Fix signed integer overflow in decode_filter() 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: signed integer overflow: -631553 * 32768 cannot be represented in type 'int' Fixes: 57814/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_RKA_fuzzer-4614661233573888 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer --- libavcodec/rka.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/libavcodec/rka.c b/libavcodec/rka.c index 2212e3f9306..3e86d83819c 100644 --- a/libavcodec/rka.c +++ b/libavcodec/rka.c @@ -737,7 +737,7 @@ static int decode_filter(RKAContext *s, ChContext *ctx, ACoder *ac, int off, uns } ctx->buf0[off] = ctx->buf1[off] + ctx->buf0[off + -1]; } else { - val *= 1 << ctx->cmode; + val *= 1U << ctx->cmode; sum += ctx->buf0[off + -1] + val; switch (s->bps) { case 16: sum = av_clip_int16(sum); break; -- 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".