{"id":5668,"date":"2026-05-11T22:28:00","date_gmt":"2026-05-11T22:28:00","guid":{"rendered":"https:\/\/rjbarrett.redirectme.net\/?p=5668"},"modified":"2026-05-11T22:28:00","modified_gmt":"2026-05-11T22:28:00","slug":"linux-%e3%81%8c%e3%81%93%e3%81%93%e6%95%b0%e9%80%b1%e9%96%93%e3%81%a7-2-%e3%81%a4%e7%9b%ae%e3%81%ae%e6%b7%b1%e5%88%bb%e3%81%aa%e8%84%86%e5%bc%b1%e6%80%a7%e3%81%ab%e4%be%b5%e3%81%95%e3%82%8c%e3%82%8b","status":"publish","type":"post","link":"https:\/\/rjbarrett.redirectme.net\/?p=5668","title":{"rendered":"Linux \u304c\u3053\u3053\u6570\u9031\u9593\u3067 2 \u3064\u76ee\u306e\u6df1\u523b\u306a\u8106\u5f31\u6027\u306b\u4fb5\u3055\u308c\u308b"},"content":{"rendered":"<p><br \/>\n<br \/><img decoding=\"async\" src=\"https:\/\/cdn.arstechnica.net\/wp-content\/uploads\/2022\/05\/caution-tape-1000x648.jpeg\" \/><\/p>\n<div>\n<p>\u3069\u3061\u3089\u306e\u6a29\u9650\u6607\u683c\u306e\u8106\u5f31\u6027\u3082\u3001\u30ab\u30fc\u30cd\u30eb\u306b\u3088\u308b\u30e1\u30e2\u30ea\u5185\u30da\u30fc\u30b8 \u30ad\u30e3\u30c3\u30b7\u30e5\u306e\u51e6\u7406\u30a8\u30e9\u30fc\u304c\u539f\u56e0\u3067\u767a\u751f\u3057\u3001\u4fe1\u983c\u3067\u304d\u306a\u3044\u30e6\u30fc\u30b6\u30fc\u306b\u3088\u308b\u30ad\u30e3\u30c3\u30b7\u30e5\u306e\u5909\u66f4\u304c\u53ef\u80fd\u306b\u306a\u308a\u307e\u3059\u3002\u3053\u308c\u3089\u306f\u3001\u30cd\u30c3\u30c8\u30ef\u30fc\u30af \u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u306e\u30ad\u30e3\u30c3\u30b7\u30e5\u3068\u30e1\u30e2\u30ea \u30d5\u30e9\u30b0\u30e1\u30f3\u30c8\u306e\u51e6\u7406\u3092\u5bfe\u8c61\u3068\u3057\u3066\u3044\u307e\u3059\u3002\u5177\u4f53\u7684\u306b\u306f\u3001CVE-2026-43284 \u306f esp4 \u304a\u3088\u3073 esp6() \u30d7\u30ed\u30bb\u30b9\u3092\u653b\u6483\u3057\u3001CVE-2026-43500 \u306f rxrpc \u3092\u653b\u6483\u3057\u307e\u3059\u3002\u5148\u9031\u306e CopyFail \u306f\u3001IPsec \u62e1\u5f35\u30b7\u30fc\u30b1\u30f3\u30b9\u756a\u53f7\u306b\u4f7f\u7528\u3055\u308c\u308b\u8a8d\u8a3c\u306e AEAD \u30c6\u30f3\u30d7\u30ec\u30fc\u30c8 \u30d7\u30ed\u30bb\u30b9\u306b\u3042\u308b\u30da\u30fc\u30b8 \u30ad\u30e3\u30c3\u30b7\u30e5\u306e\u6b20\u9665\u3092\u60aa\u7528\u3057\u307e\u3057\u305f\u3002 Dirty Pipe \u3068\u547c\u3070\u308c\u308b 2022 \u5e74\u306e\u8106\u5f31\u6027\u3082\u3001\u653b\u6483\u8005\u304c\u30da\u30fc\u30b8 \u30ad\u30e3\u30c3\u30b7\u30e5\u3092\u4e0a\u66f8\u304d\u3067\u304d\u308b\u6b20\u9665\u306b\u3088\u3063\u3066\u767a\u751f\u3057\u307e\u3057\u305f\u3002<\/p>\n<p>\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u4f01\u696d Automox \u306e\u7814\u7a76\u8005\u306f\u6b21\u306e\u3088\u3046\u306b\u66f8\u3044\u3066\u3044\u307e\u3059\u3002<\/p>\n<blockquote>\n<p><span style=\"font-weight: 400;\">Dirty Frag \u306f Dirty Pipe \u3084 Copy Fail \u3068\u540c\u3058\u30d0\u30b0 \u30d5\u30a1\u30df\u30ea\u306b\u5c5e\u3057\u307e\u3059\u304c\u3001\u30bf\u30fc\u30b2\u30c3\u30c8\u3068\u3059\u308b\u306e\u306f <\/span><span style=\"font-weight: 400;\">\u65ad\u7247<\/span><span style=\"font-weight: 400;\">    \u30b3\u30a2\u30e1\u30f3\u30d0\u30fc <\/span><span style=\"font-weight: 400;\">\u69cb\u9020\u4f53sk_buff<\/span><span style=\"font-weight: 400;\">    \u306e\u4ee3\u308f\u308a\u306b <\/span><span style=\"font-weight: 400;\">\u30d1\u30a4\u30d7\u30d0\u30c3\u30d5\u30a1<\/span><span style=\"font-weight: 400;\">\u3002\u30a8\u30af\u30b9\u30d7\u30ed\u30a4\u30c8\u306e\u4f7f\u7528\u65b9\u6cd5 <\/span><span style=\"font-weight: 400;\">\u30b9\u30d7\u30e9\u30a4\u30b9\uff08\uff09<\/span><span style=\"font-weight: 400;\">    \u8aad\u307f\u53d6\u308a\u5c02\u7528\u30da\u30fc\u30b8\u306e\u30ad\u30e3\u30c3\u30b7\u30e5 \u30da\u30fc\u30b8\u3078\u306e\u53c2\u7167\u3092\u690d\u3048\u4ed8\u3051\u307e\u3059 (\u4f8b: <\/span><span style=\"font-weight: 400;\">\/etc\/\u30d1\u30b9\u30ef\u30fc\u30c9<\/span><span style=\"font-weight: 400;\">    \u307e\u305f\u306f <\/span><span style=\"font-weight: 400;\">\/usr\/bin\/su<\/span><span style=\"font-weight: 400;\">\uff09 \u3044\u3044\u3048 <\/span><span style=\"font-weight: 400;\">\u65ad\u7247<\/span><span style=\"font-weight: 400;\">    \u9001\u4fe1\u6a5f\u306e\u7247\u5074\u306b\u3042\u308b\u30b9\u30ed\u30c3\u30c8 <\/span><span style=\"font-weight: 400;\">skb<\/span><span style=\"font-weight: 400;\">\u3002\u6b21\u306b\u3001\u53d7\u4fe1\u5074\u306e\u30ab\u30fc\u30cd\u30eb \u30b3\u30fc\u30c9\u306f\u3001\u305d\u306e\u30d5\u30e9\u30b0\u30e1\u30f3\u30c8\u306b\u5bfe\u3057\u3066\u30a4\u30f3\u30d7\u30ec\u30fc\u30b9\u6697\u53f7\u5316\u64cd\u4f5c\u3092\u5b9f\u884c\u3057\u3001RAM \u5185\u306e\u30da\u30fc\u30b8 \u30ad\u30e3\u30c3\u30b7\u30e5\u3092\u5909\u66f4\u3057\u307e\u3059\u3002\u305f\u3068\u3048\u653b\u6483\u8005\u304c\u8aad\u307f\u53d6\u308a\u30a2\u30af\u30bb\u30b9\u3057\u304b\u6301\u3063\u3066\u3044\u306a\u304b\u3063\u305f\u3068\u3057\u3066\u3082\u3001\u305d\u306e\u5f8c\u30d5\u30a1\u30a4\u30eb\u3092\u8aad\u307f\u53d6\u308b\u305f\u3073\u306b\u7834\u640d\u3057\u305f\u30d0\u30fc\u30b8\u30e7\u30f3\u304c\u8868\u793a\u3055\u308c\u307e\u3059\u3002<\/span><\/p>\n<\/blockquote>\n<p>CVE-2026-43284 \u306f\u3001ESP IPsec \u53d7\u4fe1\u30d1\u30b9\u306e esp_input() \u30d7\u30ed\u30bb\u30b9\u3067\u898b\u3064\u304b\u308a\u307e\u3059\u3002 skb \u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u304c\u975e\u7dda\u5f62\u3067\u3042\u308b\u304c\u30d5\u30e9\u30b0\u30e1\u30f3\u30c8 \u30ea\u30b9\u30c8\u304c\u306a\u3044\u5834\u5408\u3001\u30b3\u30fc\u30c9\u306f skb_cow_data() \u3092\u30b9\u30ad\u30c3\u30d7\u3057\u3001\u690d\u3048\u3089\u308c\u305f\u30d5\u30e9\u30b0\u30e1\u30f3\u30c8\u306e\u4ee3\u308f\u308a\u306b AEAD \u3092\u30c7\u30b3\u30fc\u30c9\u3057\u307e\u3059\u3002\u305d\u3053\u304b\u3089\u3001\u653b\u6483\u8005\u306f\u30d5\u30a1\u30a4\u30eb\u306e\u30aa\u30d5\u30bb\u30c3\u30c8\u3068\u5404\u30b9\u30c8\u30a2\u306e 4 \u30d0\u30a4\u30c8\u306e\u5024\u3092\u5236\u5fa1\u3067\u304d\u307e\u3059\u3002<\/p>\n<p>\u4e00\u65b9\u3001CVE-2026-43500 \u306f rxkad_verify_packet_1() \u306b\u5b58\u5728\u3057\u307e\u3059\u3002\u3053\u306e\u30d7\u30ed\u30bb\u30b9\u3067\u306f\u3001\u5358\u4e00\u30d6\u30ed\u30c3\u30af \u30d7\u30ed\u30bb\u30b9\u3092\u4f7f\u7528\u3057\u3066 RxRPC \u30da\u30a4\u30ed\u30fc\u30c9\u3092\u5fa9\u53f7\u5316\u3057\u307e\u3059\u3002\u7d50\u5408\u3055\u308c\u305f\u30da\u30fc\u30b8\u304c\u30bd\u30fc\u30b9\u3068\u30bf\u30fc\u30b2\u30c3\u30c8\u306b\u306a\u308a\u307e\u3059\u3002\u3053\u308c\u306b\u3001add_key (rxrpc) \u3092\u4f7f\u7528\u3057\u3066\u81ea\u7531\u306b\u62bd\u51fa\u3055\u308c\u308b\u5fa9\u53f7\u30ad\u30fc\u3068\u7d44\u307f\u5408\u308f\u305b\u308b\u3068\u3001\u653b\u6483\u8005\u306f\u30e1\u30e2\u30ea\u5185\u306e\u5185\u5bb9\u3092\u66f8\u304d\u63db\u3048\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<p>\u500b\u5225\u306b\u4f7f\u7528\u3055\u308c\u308b\u4fdd\u6709\u8cc7\u7523\u306f\u3069\u308c\u3082\u4fe1\u983c\u3067\u304d\u307e\u305b\u3093\u3002\u4e00\u90e8\u306e Ubuntu \u69cb\u6210\u3067\u306f\u3001AppArmor \u3092\u4f7f\u7528\u3057\u3066\u3001\u4fe1\u983c\u3067\u304d\u306a\u3044\u30e6\u30fc\u30b6\u30fc\u304c\u540d\u524d\u7a7a\u9593\u30b3\u30f3\u30c6\u30f3\u30c4\u3092\u4f5c\u6210\u3067\u304d\u306a\u3044\u3088\u3046\u306b\u3057\u307e\u3059\u3002\u3053\u308c\u306b\u3088\u308a\u3001ESP \u6280\u8853\u304c\u7121\u529b\u5316\u3055\u308c\u307e\u3059\u3002\u4ed6\u306e\u307b\u3068\u3093\u3069\u306e\u30c7\u30a3\u30b9\u30c8\u30ea\u30d3\u30e5\u30fc\u30b7\u30e7\u30f3\u306f\u30c7\u30d5\u30a9\u30eb\u30c8\u3067\u306f rxrpc.ko \u3092\u5b9f\u884c\u3057\u306a\u3044\u305f\u3081\u3001RxRPC \u30a2\u30fc\u30e0\u304c\u7121\u52b9\u306b\u306a\u308a\u307e\u3059\u3002\u305f\u3060\u3057\u3001\u3053\u306e 2 \u3064\u306e\u30a8\u30af\u30b9\u30d7\u30ed\u30a4\u30c8\u3092\u9023\u9396\u3055\u305b\u308b\u3068\u3001\u653b\u6483\u8005\u306f Kim \u304c\u30c6\u30b9\u30c8\u3057\u305f\u3059\u3079\u3066\u306e\u4e3b\u8981\u306a\u30c7\u30a3\u30b9\u30c8\u30ea\u30d3\u30e5\u30fc\u30b7\u30e7\u30f3\u4e0a\u3067 root \u3092\u53d6\u5f97\u3067\u304d\u307e\u3059\u3002\u30a8\u30af\u30b9\u30d7\u30ed\u30a4\u30c8\u304c\u5b9f\u884c\u3055\u308c\u308b\u3068\u3001\u653b\u6483\u8005\u306f SSH \u30a2\u30af\u30bb\u30b9\u3001Web \u30b7\u30a7\u30eb\u306e\u5b9f\u884c\u3001\u30b3\u30f3\u30c6\u30ca\u30fc\u306e\u30a8\u30b9\u30b1\u30fc\u30d7\u3092\u4f7f\u7528\u3057\u305f\u308a\u3001\u6a29\u9650\u306e\u4f4e\u3044\u30a2\u30ab\u30a6\u30f3\u30c8\u3092\u4fb5\u5bb3\u3057\u305f\u308a\u3059\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<p>\u300c\u30c0\u30fc\u30c6\u30a3\u30d5\u30e9\u30b0\u306f\u3001\u30a8\u30af\u30b9\u30d7\u30ed\u30a4\u30c8\u306e\u4fe1\u983c\u6027\u3092\u5411\u4e0a\u3055\u305b\u308b\u305f\u3081\u306b\u3001rxrpc\u304a\u3088\u3073esp\/xfrm\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u3092\u542b\u3080\u3044\u304f\u3064\u304b\u306e\u30ab\u30fc\u30cd\u30eb\u653b\u6483\u30d1\u30b9\u3092\u5c0e\u5165\u3057\u3066\u3044\u308b\u305f\u3081\u3001\u6ce8\u76ee\u306b\u5024\u3057\u307e\u3059\u300d\u3068Microsoft\u306e\u7814\u7a76\u8005\u306f\u66f8\u3044\u3066\u3044\u308b\u3002 \u300c\u30c0\u30fc\u30c6\u30a3 \u30d5\u30e9\u30b0\u306f\u3001\u30ed\u30fc\u30ab\u30eb Linux \u306e\u7279\u6a29\u6607\u683c\u30a8\u30af\u30b9\u30d7\u30ed\u30a4\u30c8\u306b\u3088\u304f\u95a2\u4fc2\u3059\u308b\u72ed\u3044\u6642\u9593\u67a0\u3084\u4e0d\u5b89\u5b9a\u306a\u7834\u640d\u72b6\u6cc1\u306b\u4f9d\u5b58\u3059\u308b\u306e\u3067\u306f\u306a\u304f\u3001\u8106\u5f31\u306a\u74b0\u5883\u3067\u306e\u4e00\u8cab\u6027\u3092\u9ad8\u3081\u308b\u3088\u3046\u306b\u8a2d\u8a08\u3055\u308c\u3066\u3044\u308b\u3088\u3046\u3067\u3059\u3002\u300d<\/p>\n<p>Google\u5098\u4e0b\u306eWiz\u306e\u7814\u7a76\u8005\u3089\u306f\u3001\u30c7\u30d5\u30a9\u30eb\u30c8\u306e\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u8a2d\u5b9a\u3092\u5099\u3048\u305fKubernetes\u306e\u3088\u3046\u306a\u5f37\u5316\u3055\u308c\u305f\u30b3\u30f3\u30c6\u30ca\u5316\u74b0\u5883\u304b\u3089\u30a8\u30af\u30b9\u30d7\u30ed\u30a4\u30c8\u304c\u51fa\u73fe\u3059\u308b\u53ef\u80fd\u6027\u306f\u4f4e\u304f\u306a\u308b\u3001\u3068\u8ff0\u3079\u305f\u3002 \u300c\u305f\u3060\u3057\u3001\u4eee\u60f3\u30de\u30b7\u30f3\u3084\u305d\u308c\u307b\u3069\u5236\u9650\u306e\u306a\u3044\u74b0\u5883\u3067\u306f\u3001\u30ea\u30b9\u30af\u306f\u4f9d\u7136\u3068\u3057\u3066\u91cd\u5927\u3067\u3059\u3002\u300d<\/p>\n<p>Linux \u3092\u4f7f\u7528\u3057\u3066\u3044\u308b\u4eba\u306b\u3068\u3063\u3066\u306e\u6700\u5584\u306e\u7b54\u3048\u306f\u3001\u3059\u3050\u306b\u30d1\u30c3\u30c1\u3092\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u3059\u308b\u3053\u3068\u3067\u3059\u3002\u4fee\u6b63\u306b\u306f\u518d\u8d77\u52d5\u304c\u5fc5\u8981\u306b\u306a\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u304c\u3001\u30c0\u30fc\u30c6\u30a3 \u30d5\u30e9\u30b0\u306e\u3088\u3046\u306a\u6df1\u523b\u306a\u8105\u5a01\u306b\u5bfe\u3059\u308b\u4fdd\u8b77\u306f\u4e2d\u65ad\u306b\u3088\u308b\u30b3\u30b9\u30c8\u3092\u4e0a\u56de\u308a\u307e\u3059\u3002\u3059\u3050\u306b\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u3067\u304d\u306a\u3044\u4eba\u306f\u3001\u4e0a\u8a18\u306e\u30ea\u30f3\u30af\u5148\u306e\u6295\u7a3f\u3067\u6982\u8aac\u3055\u308c\u3066\u3044\u308b\u7de9\u548c\u624b\u9806\u306b\u5f93\u3046\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002\u8ffd\u52a0\u306e\u30ac\u30a4\u30c0\u30f3\u30b9\u306f\u3053\u3053\u3067\u3054\u89a7\u3044\u305f\u3060\u3051\u307e\u3059\u3002<\/p>\n<\/p><\/div>\n\n","protected":false},"excerpt":{"rendered":"<p>\u3069\u3061\u3089\u306e\u6a29\u9650\u6607\u683c\u306e\u8106\u5f31\u6027\u3082\u3001\u30ab\u30fc\u30cd\u30eb\u306b\u3088\u308b\u30e1\u30e2\u30ea\u5185\u30da\u30fc\u30b8 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