cnvd-2023-34461
Vulnerability from cnvd
Title
Linux kernel权限提升漏洞（CNVD-2023-34461）
Description
Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在权限提升漏洞，该漏洞源于io_file_get_fixed函数缺乏ctx->uring_lock的存在，这可能导致由于固定文件未注册的竞争条件，攻击者可利用该漏洞实现本地权限提升。
Severity
中
Patch Name
Linux kernel权限提升漏洞（CNVD-2023-34461）的补丁
Patch Description
Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在权限提升漏洞，该漏洞源于io_file_get_fixed函数缺乏ctx->uring_lock的存在，这可能导致由于固定文件未注册的竞争条件，攻击者可利用该漏洞实现本地权限提升。目前，供应商发布了安全公告及相关补丁信息，修复了此漏洞。
Formal description

厂商已发布了漏洞修复程序，请及时关注更新： https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?h=linux-5.10.y&id=da24142b1ef9fd5d36b76e36bab328a5b27523e8

Reference
https://nvd.nist.gov/vuln/detail/CVE-2023-1872
Impacted products
Name
Linux Linux kernel <5.17
Show details on source website

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{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2023-1872",
      "cveUrl": "https://nvd.nist.gov/vuln/detail/CVE-2023-1872"
    }
  },
  "description": "Linux kernel\u662f\u7f8e\u56fdLinux\u57fa\u91d1\u4f1a\u7684\u5f00\u6e90\u64cd\u4f5c\u7cfb\u7edfLinux\u6240\u4f7f\u7528\u7684\u5185\u6838\u3002\n\nLinux kernel\u5b58\u5728\u6743\u9650\u63d0\u5347\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8eio_file_get_fixed\u51fd\u6570\u7f3a\u4e4fctx-\u003euring_lock\u7684\u5b58\u5728\uff0c\u8fd9\u53ef\u80fd\u5bfc\u81f4\u7531\u4e8e\u56fa\u5b9a\u6587\u4ef6\u672a\u6ce8\u518c\u7684\u7ade\u4e89\u6761\u4ef6\uff0c\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u5b9e\u73b0\u672c\u5730\u6743\u9650\u63d0\u5347\u3002",
  "formalWay": "\u5382\u5546\u5df2\u53d1\u5e03\u4e86\u6f0f\u6d1e\u4fee\u590d\u7a0b\u5e8f\uff0c\u8bf7\u53ca\u65f6\u5173\u6ce8\u66f4\u65b0\uff1a\r\nhttps://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?h=linux-5.10.y\u0026id=da24142b1ef9fd5d36b76e36bab328a5b27523e8",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2023-34461",
  "openTime": "2023-05-08",
  "patchDescription": "Linux kernel\u662f\u7f8e\u56fdLinux\u57fa\u91d1\u4f1a\u7684\u5f00\u6e90\u64cd\u4f5c\u7cfb\u7edfLinux\u6240\u4f7f\u7528\u7684\u5185\u6838\u3002\r\n\r\nLinux kernel\u5b58\u5728\u6743\u9650\u63d0\u5347\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8eio_file_get_fixed\u51fd\u6570\u7f3a\u4e4fctx-\u003euring_lock\u7684\u5b58\u5728\uff0c\u8fd9\u53ef\u80fd\u5bfc\u81f4\u7531\u4e8e\u56fa\u5b9a\u6587\u4ef6\u672a\u6ce8\u518c\u7684\u7ade\u4e89\u6761\u4ef6\uff0c\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u5b9e\u73b0\u672c\u5730\u6743\u9650\u63d0\u5347\u3002\u76ee\u524d\uff0c\u4f9b\u5e94\u5546\u53d1\u5e03\u4e86\u5b89\u5168\u516c\u544a\u53ca\u76f8\u5173\u8865\u4e01\u4fe1\u606f\uff0c\u4fee\u590d\u4e86\u6b64\u6f0f\u6d1e\u3002",
  "patchName": "Linux kernel\u6743\u9650\u63d0\u5347\u6f0f\u6d1e\uff08CNVD-2023-34461\uff09\u7684\u8865\u4e01",
  "products": {
    "product": "Linux Linux kernel \u003c5.17"
  },
  "referenceLink": "https://nvd.nist.gov/vuln/detail/CVE-2023-1872",
  "serverity": "\u4e2d",
  "submitTime": "2023-04-18",
  "title": "Linux kernel\u6743\u9650\u63d0\u5347\u6f0f\u6d1e\uff08CNVD-2023-34461\uff09"
}


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