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 9B4A54523E for ; Sun, 16 Apr 2023 16:49:58 +0000 (UTC) Received: from [127.0.1.1] (localhost [127.0.0.1]) by ffbox0-bg.mplayerhq.hu (Postfix) with ESMTP id 341AD6802C8; Sun, 16 Apr 2023 19:48:55 +0300 (EEST) Received: from relay5-d.mail.gandi.net (relay5-d.mail.gandi.net [217.70.183.197]) by ffbox0-bg.mplayerhq.hu (Postfix) with ESMTPS id 40C3868BE4E for ; Sun, 16 Apr 2023 19:48:53 +0300 (EEST) Received: (Authenticated sender: michael@niedermayer.cc) by mail.gandi.net (Postfix) with ESMTPSA id 4B6101C0003 for ; Sun, 16 Apr 2023 16:48:51 +0000 (UTC) From: Michael Niedermayer To: FFmpeg development discussions and patches Date: Sun, 16 Apr 2023 18:48:28 +0200 Message-Id: <20230416164830.15664-9-michael@niedermayer.cc> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20230416164830.15664-1-michael@niedermayer.cc> References: <20230416164830.15664-1-michael@niedermayer.cc> Subject: [FFmpeg-devel] [PATCH 09/11] avcodec/tiff: add a zero DNG_LINEARIZATION_TABLE check 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: index 4294967295 out of bounds for type 'uint16_t [65536]' Fixes: 45982/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_TIFF_fuzzer-5950405086674944 Fixes: 45982/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_TIFF_fuzzer-6666195176914944 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer --- libavcodec/tiff.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/libavcodec/tiff.c b/libavcodec/tiff.c index 1a1879de890..ebc7505dcdf 100644 --- a/libavcodec/tiff.c +++ b/libavcodec/tiff.c @@ -1451,7 +1451,7 @@ static int tiff_decode_tag(TiffContext *s, AVFrame *frame) break; case TIFF_GRAY_RESPONSE_CURVE: case DNG_LINEARIZATION_TABLE: - if (count > FF_ARRAY_ELEMS(s->dng_lut)) + if (count < 1 || count > FF_ARRAY_ELEMS(s->dng_lut)) return AVERROR_INVALIDDATA; for (int i = 0; i < count; i++) s->dng_lut[i] = ff_tget(&s->gb, type, s->le); -- 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".