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Wed, 11 Feb 2026 01:41:06 +0200 (EET) MIME-Version: 1.0 To: ffmpeg-devel@ffmpeg.org Date: Tue, 10 Feb 2026 23:40:02 -0000 Message-ID: <177076738182.25.17940820410992339322@009cbcb3d8cd> Message-ID-Hash: B76C5YMDM2ZFQ4VK6NRECBNMG7IYOOHT X-Message-ID-Hash: B76C5YMDM2ZFQ4VK6NRECBNMG7IYOOHT X-MailFrom: code@ffmpeg.org X-Mailman-Rule-Hits: nonmember-moderation X-Mailman-Rule-Misses: dmarc-mitigation; no-senders; approved; loop; banned-address; header-match-ffmpeg-devel.ffmpeg.org-0; header-match-ffmpeg-devel.ffmpeg.org-1; header-match-ffmpeg-devel.ffmpeg.org-2; header-match-ffmpeg-devel.ffmpeg.org-3; emergency; member-moderation X-Mailman-Version: 3.3.10 Precedence: list Reply-To: FFmpeg development discussions and patches Subject: [FFmpeg-devel] [PR] avcodec/leaddec: Check input data before allocating buffer (PR #21715) List-Id: FFmpeg development discussions and patches Archived-At: Archived-At: List-Archive: List-Archive: List-Help: List-Owner: List-Post: List-Subscribe: List-Unsubscribe: From: michaelni via ffmpeg-devel Cc: michaelni Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Archived-At: List-Archive: List-Post: PR #21715 opened by michaelni URL: https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/21715 Patch URL: https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/21715.patch Fixes: Timeout Fixes: 471636089/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_LEAD_fuzzer-6346348464242688 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer >>From 138e5478da0e24ef2b6dc5d2ff4e1136ea4add2f Mon Sep 17 00:00:00 2001 From: Michael Niedermayer Date: Tue, 10 Feb 2026 13:56:10 +0100 Subject: [PATCH] avcodec/leaddec: Check input data before allocating buffer Fixes: Timeout Fixes: 471636089/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_LEAD_fuzzer-6346348464242688 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 e6a91faabc..e014394544 100644 --- a/libavcodec/leaddec.c +++ b/libavcodec/leaddec.c @@ -184,6 +184,9 @@ static int lead_decode_frame(AVCodecContext *avctx, AVFrame * frame, calc_dequant(dequant[0], ff_mjpeg_std_luminance_quant_tbl, q); calc_dequant(dequant[1], ff_mjpeg_std_chrominance_quant_tbl, q); + if (avpkt->size < ((avctx->width + 15) / 16) * ((avctx->height + 15) / 16) * 6 / 2) + return AVERROR_INVALIDDATA; + if ((ret = ff_get_buffer(avctx, frame, 0)) < 0) return ret; -- 2.52.0 _______________________________________________ ffmpeg-devel mailing list -- ffmpeg-devel@ffmpeg.org To unsubscribe send an email to ffmpeg-devel-leave@ffmpeg.org