{"id":28560,"date":"2025-04-20T01:06:28","date_gmt":"2025-04-19T17:06:28","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/28560.html"},"modified":"2025-04-20T01:06:28","modified_gmt":"2025-04-19T17:06:28","slug":"%e5%a6%82%e4%bd%95%e4%bf%9d%e6%8a%a4%e6%82%a8%e7%9a%84%e6%9c%8d%e5%8a%a1%e5%99%a8%e5%85%8d%e5%8f%97meltdown%e5%92%8cspectre%e6%bc%8f%e6%b4%9e%e7%9a%84%e5%bd%b1%e5%93%8d","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/28560.html","title":{"rendered":"\u5982\u4f55\u4fdd\u62a4\u60a8\u7684\u670d\u52a1\u5668\u514d\u53d7Meltdown\u548cSpectre\u6f0f\u6d1e\u7684\u5f71\u54cd"},"content":{"rendered":"<p>\u524d\u4e9b\u5929\u53d1\u73b0\u4e86\u4e00\u4e2a\u5de8\u725b\u7684\u4eba\u5de5\u667a\u80fd\u5b66\u4e60\u7f51\u7ad9&#xff0c;\u901a\u4fd7\u6613\u61c2&#xff0c;\u98ce\u8da3\u5e7d\u9ed8&#xff0c;\u5fcd\u4e0d\u4f4f\u5206\u4eab\u4e00\u4e0b\u7ed9\u5927\u5bb6\u3002\u70b9\u51fb\u8df3\u8f6c\u5230\u7f51\u7ad9\u3002<\/p>\n<h3>Meltdown \u548c Spectre \u662f\u4ec0\u4e48&#xff1f;<\/h3>\n<p>\u57282018\u5e741\u67084\u65e5&#xff0c;\u73b0\u4ee3 CPU \u8bbe\u8ba1\u4e2d\u51fa\u73b0\u4e86\u591a\u4e2a\u6f0f\u6d1e\u3002\u5229\u7528\u67d0\u4e9b\u5904\u7406\u5668\u6027\u80fd\u4f18\u5316&#xff0c;\u8fd9\u4e9b\u6f0f\u6d1e\u2014\u2014\u88ab\u547d\u540d\u4e3a Meltdown \u548c Spectre\u2014\u2014\u4f7f\u5f97\u653b\u51fb\u8005\u53ef\u4ee5\u5728\u6b63\u786e\u64cd\u4f5c\u65f6\u8feb\u4f7f\u5e94\u7528\u7a0b\u5e8f\u900f\u9732\u7cfb\u7edf\u548c\u5e94\u7528\u7a0b\u5e8f\u5185\u5b58\u7684\u5185\u5bb9\u3002\u8fd9\u4e9b\u653b\u51fb\u4e4b\u6240\u4ee5\u594f\u6548&#xff0c;\u662f\u56e0\u4e3a\u5904\u7406\u5668\u5185\u7684\u6b63\u5e38\u7279\u6743\u68c0\u67e5\u884c\u4e3a\u88ab\u901a\u8fc7\u9884\u6d4b\u6267\u884c\u3001\u5206\u652f\u9884\u6d4b\u3001\u4e71\u5e8f\u6267\u884c\u548c\u7f13\u5b58\u7b49\u7279\u6027\u7684\u4ea4\u4e92\u6240\u98a0\u8986\u3002<\/p>\n<p>Meltdown \u88ab\u62ab\u9732\u5728 CVE-2017-5754 \u4e2d\u3002Spectre \u88ab\u62ab\u9732\u5728 CVE-2017-5753 \u548c CVE-2017-5715 \u4e2d\u3002<\/p>\n<p>\u6b32\u4e86\u89e3\u66f4\u8be6\u7ec6\u4fe1\u606f&#xff0c;\u8bf7\u67e5\u770b\u4e0b\u9762\u7684 Meltdown \u5982\u4f55\u5de5\u4f5c&#xff1f;\u548c Spectre \u5982\u4f55\u5de5\u4f5c&#xff1f;\u90e8\u5206\u3002<\/p>\n<h3>\u6211\u53d7\u5230 Meltdown \u548c Spectre \u7684\u5f71\u54cd\u5417&#xff1f;<\/h3>\n<p>Meltdown \u548c Spectre \u5f71\u54cd\u5927\u591a\u6570\u73b0\u4ee3\u5904\u7406\u5668\u3002\u8fd9\u4e9b\u6f0f\u6d1e\u6240\u5229\u7528\u7684\u5904\u7406\u5668\u4f18\u5316\u662f\u5927\u591a\u6570 CPU \u7684\u6838\u5fc3\u8bbe\u8ba1\u7279\u5f81&#xff0c;\u8fd9\u610f\u5473\u7740\u5927\u591a\u6570\u7cfb\u7edf\u5728\u7279\u5b9a\u4fee\u8865\u7a0b\u5e8f\u4e4b\u524d\u90fd\u662f\u5bb9\u6613\u53d7\u5230\u653b\u51fb\u7684\u3002\u8fd9\u5305\u62ec\u53f0\u5f0f\u7535\u8111\u3001\u670d\u52a1\u5668\u4ee5\u53ca\u5728\u4e91\u73af\u5883\u4e2d\u8fd0\u884c\u7684\u8ba1\u7b97\u5b9e\u4f8b\u3002<\/p>\n<p>\u7528\u4e8e\u4fdd\u62a4\u514d\u53d7 Meltdown \u5f71\u54cd\u7684\u4fee\u8865\u7a0b\u5e8f\u6b63\u5728\u4ece\u64cd\u4f5c\u7cfb\u7edf\u4f9b\u5e94\u5546\u5904\u53d1\u5e03\u3002\u867d\u7136\u4e5f\u5728\u53d1\u5e03 Spectre \u7684\u66f4\u65b0&#xff0c;\u4f46\u5b83\u4ee3\u8868\u4e86\u4e00\u6574\u7c7b\u6f0f\u6d1e&#xff0c;\u56e0\u6b64\u53ef\u80fd\u9700\u8981\u66f4\u5e7f\u6cdb\u7684\u6301\u7eed\u4fee\u590d\u3002<\/p>\n<p>\u5728\u4e91\u548c\u865a\u62df\u5316\u73af\u5883\u4e2d&#xff0c;\u63d0\u4f9b\u5546\u9700\u8981\u66f4\u65b0\u57fa\u7840\u67b6\u6784\u4ee5\u4fdd\u62a4\u5176\u5ba2\u6237\u3002\u7528\u6237\u9700\u8981\u66f4\u65b0\u5176\u670d\u52a1\u5668\u4ee5\u51cf\u8f7b\u5ba2\u6237\u64cd\u4f5c\u7cfb\u7edf\u5185\u7684\u5f71\u54cd\u3002<\/p>\n<h3>\u6211\u8be5\u5982\u4f55\u4fdd\u62a4\u81ea\u5df1&#xff1f;<\/h3>\n<p>\u5bf9\u8fd9\u7c7b\u6f0f\u6d1e\u7684\u5b8c\u5168\u4fdd\u62a4\u53ef\u80fd\u9700\u8981\u5bf9 CPU \u8bbe\u8ba1\u8fdb\u884c\u66f4\u6539\u3002\u5728\u6b64\u671f\u95f4&#xff0c;\u8f6f\u4ef6\u66f4\u65b0\u53ef\u4ee5\u901a\u8fc7\u7981\u7528\u6216\u89e3\u51b3\u5bfc\u81f4\u8fd9\u4e9b\u6f0f\u6d1e\u7684\u67d0\u4e9b\u4f18\u5316\u884c\u4e3a\u6765\u63d0\u4f9b\u5bf9\u653b\u51fb\u7684\u7f13\u89e3\u3002<\/p>\n<p>\u4e0d\u5e78\u7684\u662f&#xff0c;\u7531\u4e8e\u8fd9\u4e9b\u8865\u4e01\u5f71\u54cd\u4e86\u5904\u7406\u5668\u5185\u7684\u4f18\u5316\u4f8b\u7a0b&#xff0c;\u7f13\u89e3\u8865\u4e01\u53ef\u80fd\u4f1a\u964d\u4f4e\u670d\u52a1\u5668\u7684\u6027\u80fd\u3002\u51cf\u901f\u7a0b\u5ea6\u9ad8\u5ea6\u4f9d\u8d56\u4e8e\u6b63\u5728\u6267\u884c\u7684\u5de5\u4f5c\u7c7b\u578b&#xff0c;I\/O \u5bc6\u96c6\u578b\u8fdb\u7a0b\u4f1a\u53d7\u5230\u6700\u5927\u5f71\u54cd\u3002<\/p>\n<h4>\u5f53\u524d\u7f13\u89e3\u8865\u4e01\u72b6\u6001<\/h4>\n<p>\u5728\u64b0\u5199\u672c\u6587\u65f6&#xff08;2018\u5e741\u67089\u65e5&#xff09;&#xff0c;Linux \u53d1\u884c\u7248\u5df2\u5f00\u59cb\u5206\u53d1\u8865\u4e01&#xff0c;\u4f46\u5c1a\u65e0\u4efb\u4f55\u53d1\u884c\u7248\u5b8c\u5168\u4fee\u8865\u3002<\/p>\n<p>\u5df2\u53d1\u5e03\u5177\u6709\u90e8\u5206\u7f13\u89e3&#xff08;\u9488\u5bf9 Meltdown \u548c Spectre \u53d8\u4f531\u8fdb\u884c\u4e86\u4fee\u8865&#xff09;\u7684\u5185\u6838\u66f4\u65b0\u7684\u53d1\u884c\u7248\u5305\u62ec&#xff1a;<\/p>\n<ul>\n<li>CentOS 7&#xff1a;kernel 3.10.0-693.11.6<\/li>\n<li>CentOS 6&#xff1a;kernel 2.6.32-696.18.7<\/li>\n<\/ul>\n<p>\u5df2\u53d1\u5e03\u5177\u6709\u90e8\u5206\u7f13\u89e3&#xff08;\u9488\u5bf9 Meltdown \u8fdb\u884c\u4e86\u4fee\u8865&#xff09;\u7684\u5185\u6838\u66f4\u65b0\u7684\u53d1\u884c\u7248\u5305\u62ec&#xff1a;<\/p>\n<ul>\n<li>Fedora 27&#xff1a;kernel 4.14.11-300<\/li>\n<li>Fedora 26&#xff1a;kernel 4.14.11-200<\/li>\n<li>Ubuntu 17.10&#xff1a;kernel 4.13.0-25-generic<\/li>\n<li>Ubuntu 16.04&#xff1a;kernel 4.4.0-109-generic<\/li>\n<li>Ubuntu 14.04&#xff1a;kernel 3.13.0-139-generic<\/li>\n<li>Debian 9&#xff1a;kernel 4.9.0-5-amd64<\/li>\n<li>Debian 8&#xff1a;kernel 3.16.0-5-amd64<\/li>\n<li>Debian 7&#xff1a;kernel 3.2.0-5-amd64<\/li>\n<li>Fedora 27 Atomic&#xff1a;kernel 4.14.11-300.fc27.x86_64<\/li>\n<li>CoreOS&#xff1a;kernel 4.14.11-coreos<\/li>\n<\/ul>\n<p>\u5982\u679c\u60a8\u7684\u5185\u6838\u81f3\u5c11\u66f4\u65b0\u5230\u4e0a\u8ff0\u7248\u672c&#xff0c;\u90a3\u4e48\u4e00\u4e9b\u66f4\u65b0\u5df2\u7ecf\u5e94\u7528\u3002<\/p>\n<p>\u5c1a\u672a\u53d1\u5e03\u5177\u6709\u7f13\u89e3\u63aa\u65bd\u7684\u5185\u6838\u7684\u64cd\u4f5c\u7cfb\u7edf\u5305\u62ec&#xff1a;<\/p>\n<ul>\n<li>FreeBSD 11.x<\/li>\n<li>FreeBSD 10.x<\/li>\n<\/ul>\n<p>\u5373\u5c06\u4e8e2018\u5e741\u670813\u65e5\u5230\u671f\u7684 Ubuntu 17.04 \u5c06\u4e0d\u4f1a\u6536\u5230\u8865\u4e01\u3002\u5f3a\u70c8\u5efa\u8bae\u7528\u6237\u66f4\u65b0\u6216\u8fc1\u79fb\u3002<\/p>\n<p>\u7531\u4e8e\u6b64\u6f0f\u6d1e\u7684\u4e25\u91cd\u6027&#xff0c;\u6211\u4eec\u5efa\u8bae\u5728\u8865\u4e01\u53ef\u7528\u65f6\u7acb\u5373\u5e94\u7528\u66f4\u65b0&#xff0c;\u800c\u4e0d\u662f\u7b49\u5f85\u5b8c\u6574\u7684\u8865\u4e01\u96c6\u3002\u8fd9\u53ef\u80fd\u9700\u8981\u60a8\u5728\u672a\u6765\u7684\u51e0\u5929\u548c\u51e0\u5468\u5185\u591a\u6b21\u5347\u7ea7\u5185\u6838\u5e76\u91cd\u65b0\u542f\u52a8\u3002<\/p>\n<h4>\u5982\u4f55\u5e94\u7528\u66f4\u65b0&#xff1f;<\/h4>\n<p>\u8981\u66f4\u65b0\u60a8\u7684\u670d\u52a1\u5668&#xff0c;\u60a8\u9700\u8981\u5728\u60a8\u7684\u53d1\u884c\u7248\u7684\u8865\u4e01\u53ef\u7528\u65f6\u66f4\u65b0\u7cfb\u7edf\u8f6f\u4ef6\u3002\u60a8\u53ef\u4ee5\u901a\u8fc7\u8fd0\u884c\u5e38\u89c4\u8f6f\u4ef6\u5305\u7ba1\u7406\u5668\u6765\u4e0b\u8f7d\u6700\u65b0\u7684\u5185\u6838\u7248\u672c&#xff0c;\u7136\u540e\u91cd\u65b0\u542f\u52a8\u670d\u52a1\u5668\u4ee5\u5207\u6362\u5230\u4fee\u8865\u4ee3\u7801\u3002<\/p>\n<p>\u5bf9\u4e8e Ubuntu \u548c Debian \u670d\u52a1\u5668&#xff0c;\u60a8\u53ef\u4ee5\u901a\u8fc7\u5237\u65b0\u672c\u5730\u8f6f\u4ef6\u5305\u7d22\u5f15&#xff0c;\u7136\u540e\u5347\u7ea7\u7cfb\u7edf\u8f6f\u4ef6\u6765\u66f4\u65b0\u7cfb\u7edf\u8f6f\u4ef6&#xff1a;<\/p>\n<p>sudo apt-get update<br \/>\nsudo apt-get dist-upgrade<\/p>\n<p>\u5bf9\u4e8e CentOS \u670d\u52a1\u5668&#xff0c;\u60a8\u53ef\u4ee5\u901a\u8fc7\u8f93\u5165\u4ee5\u4e0b\u547d\u4ee4\u6765\u4e0b\u8f7d\u548c\u5b89\u88c5\u66f4\u65b0\u7684\u8f6f\u4ef6&#xff1a;<\/p>\n<p>sudo yum update<\/p>\n<p>\u5bf9\u4e8e Fedora \u670d\u52a1\u5668&#xff0c;\u8bf7\u4f7f\u7528 dnf \u5de5\u5177&#xff1a;<\/p>\n<p>sudo dnf update<\/p>\n<p>\u65e0\u8bba\u64cd\u4f5c\u7cfb\u7edf\u5982\u4f55&#xff0c;\u4e00\u65e6\u5e94\u7528\u4e86\u66f4\u65b0&#xff0c;\u91cd\u65b0\u542f\u52a8\u670d\u52a1\u5668\u4ee5\u5207\u6362\u5230\u65b0\u5185\u6838&#xff1a;<\/p>\n<p>sudo reboot<\/p>\n<p>\u670d\u52a1\u5668\u91cd\u65b0\u4e0a\u7ebf\u540e&#xff0c;\u767b\u5f55\u5e76\u68c0\u67e5\u6d3b\u52a8\u5185\u6838\u662f\u5426\u4e0e\u4e0a\u8ff0\u5217\u8868\u4e2d\u7684\u5185\u6838\u7248\u672c\u76f8\u5339\u914d&#xff0c;\u4ee5\u786e\u4fdd\u60a8\u7684\u5185\u6838\u5df2\u5347\u7ea7\u3002\u9891\u7e41\u68c0\u67e5\u65b0\u7684\u66f4\u65b0&#xff0c;\u4ee5\u786e\u4fdd\u60a8\u5728\u53ef\u7528\u65f6\u6536\u5230\u8fdb\u4e00\u6b65\u7684\u8865\u4e01\u3002<\/p>\n<h3>\u9644\u52a0\u80cc\u666f<\/h3>\n<p>Meltdown \u548c Spectre \u7cfb\u5217\u6f0f\u6d1e\u5229\u7528\u4e86\u73b0\u4ee3\u5904\u7406\u5668\u4e2d\u7684\u6027\u80fd\u589e\u5f3a\u529f\u80fd\u3002\u5904\u7406\u5668\u7279\u6027\u5982\u9884\u6d4b\u6267\u884c\u3001\u7279\u6743\u68c0\u67e5\u3001\u4e71\u5e8f\u6267\u884c\u548c CPU \u7f13\u5b58\u7684\u7ec4\u5408\u5141\u8bb8\u5bf9\u672c\u5e94\u8d85\u51fa\u8fb9\u754c\u7684\u5185\u5b58\u4f4d\u7f6e\u8fdb\u884c\u8bfb\u53d6\u8bbf\u95ee\u3002\u7ed3\u679c\u662f&#xff0c;\u975e\u7279\u6743\u7a0b\u5e8f\u53ef\u4ee5\u88ab\u8feb\u4ece\u5176\u5185\u5b58\u4e2d\u6cc4\u9732\u654f\u611f\u6570\u636e&#xff0c;\u6216\u8005\u4ece\u5185\u6838\u6216\u5176\u4ed6\u5e94\u7528\u7a0b\u5e8f\u4e2d\u8bbf\u95ee\u7279\u6743\u5185\u5b58\u3002<\/p>\n<h4>Meltdown \u662f\u5982\u4f55\u5de5\u4f5c\u7684&#xff1f;<\/h4>\n<p>Meltdown \u6f0f\u6d1e\u901a\u8fc7\u5229\u7528 CPU \u4f18\u5316\u4e2d\u7684\u9884\u6d4b\u6267\u884c\u7684\u7f3a\u9677&#xff0c;\u6b3a\u9a97\u5904\u7406\u5668\u8bfb\u53d6\u8d85\u51fa\u8fb9\u754c\u7684\u5185\u5b58\u4f4d\u7f6e\u3002\u5176\u4e00\u822c\u601d\u8def\u5982\u4e0b&#xff1a;<\/p>\n<ul>\n<li>\u8bf7\u6c42\u8bbf\u95ee\u975e\u6cd5\u5185\u5b58\u4f4d\u7f6e\u3002<\/li>\n<li>\u7b2c\u4e8c\u4e2a\u8bf7\u6c42\u662f\u6709\u6761\u4ef6\u5730\u8bfb\u53d6\u6709\u6548\u5185\u5b58\u4f4d\u7f6e&#xff0c;\u5982\u679c\u7b2c\u4e00\u4e2a\u8bf7\u6c42\u5305\u542b\u7279\u5b9a\u503c\u7684\u8bdd\u3002<\/li>\n<li>\u5229\u7528\u9884\u6d4b\u6267\u884c&#xff0c;\u5904\u7406\u5668\u5728\u68c0\u67e5\u521d\u59cb\u8bf7\u6c42\u662f\u5426\u65e0\u6548\u4e4b\u524d&#xff0c;\u5b8c\u6210\u4e86\u4e24\u4e2a\u8bf7\u6c42\u7684\u540e\u53f0\u5de5\u4f5c\u3002\u4e00\u65e6\u5904\u7406\u5668\u4e86\u89e3\u5230\u8bf7\u6c42\u6d89\u53ca\u8d85\u51fa\u8fb9\u754c\u7684\u5185\u5b58&#xff0c;\u5b83\u4f1a\u6b63\u786e\u5730\u62d2\u7edd\u8fd9\u4e24\u4e2a\u8bf7\u6c42\u3002\u5c3d\u7ba1\u7279\u6743\u68c0\u67e5\u4ee3\u7801\u6807\u8bc6\u5185\u5b58\u8bbf\u95ee\u65e0\u6548\u540e&#xff0c;\u5904\u7406\u5668\u4e0d\u4f1a\u8fd4\u56de\u7ed3\u679c&#xff0c;\u4f46\u4e24\u4e2a\u8bbf\u95ee\u4f4d\u7f6e\u4ecd\u7136\u4fdd\u7559\u5728\u5904\u7406\u5668\u7684\u7f13\u5b58\u4e2d\u3002<\/li>\n<li>\u73b0\u5728\u5bf9\u6709\u6548\u5185\u5b58\u4f4d\u7f6e\u8fdb\u884c\u65b0\u7684\u8bf7\u6c42\u3002\u5982\u679c\u8fd4\u56de\u8fc5\u901f&#xff0c;\u90a3\u4e48\u8be5\u4f4d\u7f6e\u5df2\u7ecf\u5728 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