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 0ACB147318 for ; Thu, 5 Oct 2023 19:45:18 +0000 (UTC) Received: from [127.0.1.1] (localhost [127.0.0.1]) by ffbox0-bg.mplayerhq.hu (Postfix) with ESMTP id 8599D68CC4B; Thu, 5 Oct 2023 22:44:53 +0300 (EEST) Received: from relay4-d.mail.gandi.net (relay4-d.mail.gandi.net [217.70.183.196]) by ffbox0-bg.mplayerhq.hu (Postfix) with ESMTPS id 2C8A568C9EE for ; Thu, 5 Oct 2023 22:44:45 +0300 (EEST) Received: by mail.gandi.net (Postfix) with ESMTPSA id 6C62FE0002 for ; Thu, 5 Oct 2023 19:44:44 +0000 (UTC) From: Michael Niedermayer To: FFmpeg development discussions and patches Date: Thu, 5 Oct 2023 21:44:39 +0200 Message-Id: <20231005194440.1678-4-michael@niedermayer.cc> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20231005194440.1678-1-michael@niedermayer.cc> References: <20231005194440.1678-1-michael@niedermayer.cc> X-GND-Sasl: michael@niedermayer.cc Subject: [FFmpeg-devel] [PATCH 4/5] avcodec/cbs_h2645: Fix showing bits at the end in cbs_read_se_golomb() 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: Assertion n>0 && n<=25 failed at libavcodec/get_bits.h:375 Fixes: 62618/clusterfuzz-testcase-minimized-ffmpeg_BSF_H264_REDUNDANT_PPS_fuzzer-5145745046765568 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer --- libavcodec/cbs_h2645.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/libavcodec/cbs_h2645.c b/libavcodec/cbs_h2645.c index fbfd671efea..a7b9f3cef33 100644 --- a/libavcodec/cbs_h2645.c +++ b/libavcodec/cbs_h2645.c @@ -93,7 +93,7 @@ static int cbs_read_se_golomb(CodedBitstreamContext *ctx, GetBitContext *gbc, max_length = FFMIN(get_bits_left(gbc), 32); - leading_bits = show_bits_long(gbc, max_length); + leading_bits = max_length ? show_bits_long(gbc, max_length) : 0; if (leading_bits == 0) { if (max_length >= 32) { av_log(ctx->log_ctx, AV_LOG_ERROR, "Invalid se-golomb code at " -- 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".