From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from ffbox0-bg.ffmpeg.org (ffbox0-bg.ffmpeg.org [79.124.17.100]) by master.gitmailbox.com (Postfix) with ESMTPS id 214624CB29 for ; Thu, 7 Aug 2025 23:38:21 +0000 (UTC) Received: from [127.0.1.1] (localhost [127.0.0.1]) by ffbox0-bg.ffmpeg.org (Postfix) with ESMTP id F184068CC39; Fri, 8 Aug 2025 02:38:17 +0300 (EEST) Received: from 0f9ae49ae7c8 (code.ffmpeg.org [188.245.149.3]) by ffbox0-bg.ffmpeg.org (Postfix) with ESMTPS id 3A32168A6E1 for ; Fri, 8 Aug 2025 02:38:16 +0300 (EEST) MIME-Version: 1.0 From: michaelni To: ffmpeg-devel@ffmpeg.org Subject: [FFmpeg-devel] =?utf-8?q?=5BPATCH=5D_avcodec/apv=5Fdecode=3A_Che?= =?utf-8?q?ck_that_tiles_are_within_the_frame_=28PR_=2320168=29?= 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 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: ffmpeg-devel-bounces@ffmpeg.org Sender: "ffmpeg-devel" Message-Id: <20250807233817.F184068CC39@ffbox0-bg.ffmpeg.org> Date: Fri, 8 Aug 2025 02:38:17 +0300 (EEST) Archived-At: List-Archive: List-Post: PR #20168 opened by michaelni URL: https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/20168 Patch URL: https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/20168.patch Fixes: crash (out of array access) Fixes: 435489659/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_APV_fuzzer-6194885205229568 CC: Mark Thompson Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer >From 7f56ae1a62601392fac06483c538fc53b8bfe14c Mon Sep 17 00:00:00 2001 From: Michael Niedermayer Date: Fri, 8 Aug 2025 01:05:05 +0200 Subject: [PATCH] avcodec/apv_decode: Check that tiles are within the frame Fixes: crash (out of array access) Fixes: 435489659/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_APV_fuzzer-6194885205229568 CC: Mark Thompson Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer --- libavcodec/apv_decode.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/libavcodec/apv_decode.c b/libavcodec/apv_decode.c index eb47298e2e..4b0d9eb357 100644 --- a/libavcodec/apv_decode.c +++ b/libavcodec/apv_decode.c @@ -306,6 +306,10 @@ static int apv_decode(AVCodecContext *avctx, AVFrame *output, return err; } + if ( tile_info->col_starts[tile_info->tile_cols] > FFALIGN(avctx->width , APV_MB_WIDTH) + || tile_info->row_starts[tile_info->tile_rows] > FFALIGN(avctx->height, APV_MB_HEIGHT)) + return AVERROR_INVALIDDATA; + err = ff_thread_get_buffer(avctx, output, 0); if (err < 0) return err; -- 2.49.1 _______________________________________________ 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".