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 4CAF248254 for ; Fri, 15 Dec 2023 01:48:56 +0000 (UTC) Received: from [127.0.1.1] (localhost [127.0.0.1]) by ffbox0-bg.mplayerhq.hu (Postfix) with ESMTP id EB0C168D292; Fri, 15 Dec 2023 03:48:39 +0200 (EET) Received: from relay7-d.mail.gandi.net (relay7-d.mail.gandi.net [217.70.183.200]) by ffbox0-bg.mplayerhq.hu (Postfix) with ESMTPS id B316368D230 for ; Fri, 15 Dec 2023 03:48:31 +0200 (EET) Received: by mail.gandi.net (Postfix) with ESMTPSA id E0AE420002 for ; Fri, 15 Dec 2023 01:48:30 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=niedermayer.cc; s=gm1; t=1702604911; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:in-reply-to:in-reply-to:references:references; bh=j/xgszW3JPrxGWWwcajZ4KbrWhJYVo81xt0Pmm9DbTI=; b=gumA18zUnUHLQLUKg0RVQHLaYgHRg0JYDyoYoOa/Tv7KglrTTQVxpYIwdewINSIR9IE4JN 55b+Gm9Ay43a+W5P1woBljWi095J6TKoVX9PFrPttJbiC1lSnT43Rr3C1nrI046uxHL+oi F10diR8Dfmffx4cR/2eFwKxa4p6KupvFhRx4dltpXo5K+2oic6cs6JuFEoQSkUjaPvq05G qVGnBg1rWEjZT8/m++m3PXQEKMQMZI34mJS55oXHX6GZedahkn3H6sfFe4gbHqe2YNXb86 Nm8VO6mm+EaJZgHh8kgviueVz3cJ6GrLmSbFgrj95JifQ/Ag4RYdzRFu0o6/lw== From: Michael Niedermayer To: FFmpeg development discussions and patches Date: Fri, 15 Dec 2023 02:48:28 +0100 Message-Id: <20231215014828.8115-3-michael@niedermayer.cc> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20231215014828.8115-1-michael@niedermayer.cc> References: <20231215014828.8115-1-michael@niedermayer.cc> X-GND-Sasl: michael@niedermayer.cc Subject: [FFmpeg-devel] [PATCH 3/3] avcodec/leaddec: Check remaining bits in decode_block() 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: Timeout Fixes: 64163/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_LEAD_fuzzer-6418925835124736 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer --- libavcodec/leaddec.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/libavcodec/leaddec.c b/libavcodec/leaddec.c index ede52fba5a9..4e97479b03c 100644 --- a/libavcodec/leaddec.c +++ b/libavcodec/leaddec.c @@ -104,6 +104,9 @@ static int decode_block(LeadContext * s, GetBitContext * gb, s->bdsp.clear_block(block); + if (get_bits_left(gb) <= 0) + return AVERROR_INVALIDDATA; + size = get_vlc2(gb, dc_table, dc_bits, 1); if (size < 0) return AVERROR_INVALIDDATA; -- 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".