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 63FE74DFDE for ; Fri, 6 Jun 2025 01:42:57 +0000 (UTC) Received: from [127.0.1.1] (localhost [127.0.0.1]) by ffbox0-bg.ffmpeg.org (Postfix) with ESMTP id 6C47C68B9BE; Fri, 6 Jun 2025 04:42:53 +0300 (EEST) Received: from mail-vk1-f169.google.com (mail-vk1-f169.google.com [209.85.221.169]) by ffbox0-bg.ffmpeg.org (Postfix) with ESMTPS id C392468B9BE for ; Fri, 6 Jun 2025 04:42:46 +0300 (EEST) Received: by mail-vk1-f169.google.com with SMTP id 71dfb90a1353d-530756db3d0so624408e0c.2 for ; Thu, 05 Jun 2025 18:42:46 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1749174165; x=1749778965; darn=ffmpeg.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:to:from:from:to:cc:subject:date:message-id :reply-to; bh=SyoMKyy+VXhI0lrWq72wdzQnSTX9gnHooiuAl/8TYd4=; b=MIBPi+WGmrFu2OPadsbc7OnD3TSkJyy0lthaGMPQWvgpMRKn0/ZKw6fDF9C9WC9VzC nIWdbTs7tZUV7KPELJKKh5p2jG/MGUSHR99pxKsg1sVW9UaXjzDggbeIKRDTBwxDWnx5 nsOIdwxYcCul826fIO7bdcDViwyDF3SVrKHVyKjJCYchBsHi5sJIsMnOsmM2N8zFNWGk YXQKGsVBejdMzmdkICYEd/nzAOP+WpyaIE62W/ZtDDQ9BpITKzuP7rwpxBIpIS2MfM// 6zEE9/M6nK15lzCQSjqZH7OHOKay8z/K2C9gOqX3s/Wk5fwNmxvzWGyhbv2OKVEAuxI9 t4zA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1749174165; x=1749778965; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=SyoMKyy+VXhI0lrWq72wdzQnSTX9gnHooiuAl/8TYd4=; b=ake6WvU4vyXIscZNjlSp1gh/wbeO4CGsGNvqf+cXBWX4IUyGPGk+s27MWPd0UU7OK1 jz3IQxS9+7INxX4OLhkDqdvPsvaRJTc6Yt2LUZ9aES2f3hjjVYCoL9Q/e2W1EMxiUEhp pfBNHLkv1lai5aV7I9jArDcQazPdQOJZvyNZm1iWDPiJTOXjX2I2xnASMwzlwMNtmJ80 0sAmhx9KXwklBJMCa2qu5xzMFCoDS9er8HDdF2egZiSoQ+SOJ9oqmp8t3Jwu4gw8Oalt 1wBXSqYw5kTqXyYkfUdPPhGfuLqRIu98EK9Np7s+oTQcPMg5Q6U1ArMQ3UqmakvVXWkK y5HA== X-Gm-Message-State: AOJu0YzH/hprMxWwE3Va/uYNWYt6Lrn14IhSZvNcmez376OvdpoaXHJi 4j52NwTKusYwhnkEzn67SDXtzYhGChao4P2FlxjUQCPUbgw/kuXM8nNqrGv0Mw== X-Gm-Gg: ASbGncvjyAv5/5eaRNxM2ipiY0BkSCOBrCYv2ftQfFyAQXQlvldIFIBwOWtMHauwYHG jvDdq/PZXB/OPp/6Fl28T8CAKXGS1/uedeaFvsL5YAUUWgkSoMwT1cIxYfQZFGT44ctO3RZm+5p jl9BnOmHvm0Z20YzLvakABteFGgHFuwtWSr/S5mRMUvl9m/W1h9p3s2xE9Ytc2qDmeh2UyVEx3o WcYdm+KexNVzCt/3GGeG2+HIsob6i1noY8OMiQPOWtsngLqr0O2YwsUnynVpDXPPizVOWmaIegw L/FiIKDJ3QKIh3kZ9rm7TylLMSo8j2WlZb8XFiuAcmdyrKZFOmcJOtLyoTQXLDjjOqfhxg== X-Google-Smtp-Source: AGHT+IE3Lc4OD119OBgqoVQIUaZsY6vmC9QyrhdXgpk06492eXdNhBcOl3yP4Y64CJBbyUuoyWndCQ== X-Received: by 2002:a05:6122:8c14:b0:530:6c3e:4db1 with SMTP id 71dfb90a1353d-530e4849d8bmr2022978e0c.6.1749174164871; Thu, 05 Jun 2025 18:42:44 -0700 (PDT) Received: from localhost.localdomain ([2800:2121:b000:82e:287b:4d06:66a8:d1a5]) by smtp.gmail.com with ESMTPSA id 71dfb90a1353d-530e6411d61sm426714e0c.41.2025.06.05.18.42.43 for (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 05 Jun 2025 18:42:44 -0700 (PDT) From: James Almer To: ffmpeg-devel@ffmpeg.org Date: Thu, 5 Jun 2025 22:42:21 -0300 Message-ID: <20250606014221.145580-1-jamrial@gmail.com> X-Mailer: git-send-email 2.49.0 In-Reply-To: References: MIME-Version: 1.0 Subject: [FFmpeg-devel] [PATCH v2 1/4] avcodec/ac3_parser: use a padded buffer in av_ac3_parse_header() 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" Archived-At: List-Archive: List-Post: The GetBitContext API requires the buffer to be padded, and the documentation for av_ac3_parse_header() does not specify it, so use a temporary local buffer. Signed-off-by: James Almer --- libavcodec/ac3_parser.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/libavcodec/ac3_parser.c b/libavcodec/ac3_parser.c index 69989690dd..1d9a40a8d9 100644 --- a/libavcodec/ac3_parser.c +++ b/libavcodec/ac3_parser.c @@ -202,9 +202,13 @@ int av_ac3_parse_header(const uint8_t *buf, size_t size, { GetBitContext gb; AC3HeaderInfo hdr; + uint8_t tmp[32 + AV_INPUT_BUFFER_PADDING_SIZE]; int err; - err = init_get_bits8(&gb, buf, size); + size = FFMIN(32, size); + memcpy(tmp, buf, size); + memset(tmp + size, 0, AV_INPUT_BUFFER_PADDING_SIZE); + err = init_get_bits8(&gb, tmp, size); if (err < 0) return AVERROR_INVALIDDATA; err = ff_ac3_parse_header(&gb, &hdr); -- 2.49.0 _______________________________________________ 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".