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 3BB5846141 for ; Thu, 5 Oct 2023 19:45:09 +0000 (UTC) Received: from [127.0.1.1] (localhost [127.0.0.1]) by ffbox0-bg.mplayerhq.hu (Postfix) with ESMTP id 633AE68CC40; Thu, 5 Oct 2023 22:44:52 +0300 (EEST) Received: from relay9-d.mail.gandi.net (relay9-d.mail.gandi.net [217.70.183.199]) by ffbox0-bg.mplayerhq.hu (Postfix) with ESMTPS id 0B5AA68CA0E for ; Thu, 5 Oct 2023 22:44:43 +0300 (EEST) Received: by mail.gandi.net (Postfix) with ESMTPSA id 1EEE0FF803 for ; Thu, 5 Oct 2023 19:44:42 +0000 (UTC) From: Michael Niedermayer To: FFmpeg development discussions and patches Date: Thu, 5 Oct 2023 21:44:38 +0200 Message-Id: <20231005194440.1678-3-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 3/5] avcodec/cbs_h2645: Fix showing bits at the end in cbs_read_ue_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: 62617/clusterfuzz-testcase-minimized-ffmpeg_BSF_TRACE_HEADERS_fuzzer-5156555663998976 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 0a1c8ea4266..fbfd671efea 100644 --- a/libavcodec/cbs_h2645.c +++ b/libavcodec/cbs_h2645.c @@ -43,7 +43,7 @@ static int cbs_read_ue_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 ue-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".