cnvd-2023-56649
Vulnerability from cnvd
Title
Linux Kernel af_can.c拒绝服务漏洞
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存在拒绝服务漏洞，该漏洞源于net/can/af_can.c中的can协议中发现了一个空指针解引用问题，ml_priv可能未在CAN帧的接收路径中初始化，攻击者可利用该漏洞导致系统崩溃或导致拒绝服务。
Severity
中
Patch Name
Linux Kernel af_can.c拒绝服务漏洞的补丁
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存在拒绝服务漏洞，该漏洞源于net/can/af_can.c中的can协议中发现了一个空指针解引用问题，ml_priv可能未在CAN帧的接收路径中初始化，攻击者可利用该漏洞导致系统崩溃或导致拒绝服务。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://lore.kernel.org/lkml/CAO4mrfcV_07hbj8NUuZrA8FH-kaRsrFy-2metecpTuE5kKHn5w@mail.gmail.com/

Reference
https://nvd.nist.gov/vuln/detail/CVE-2023-2166
Impacted products
Name
Linux Linux kernel <6.1
Show details on source website

To clipboard 

{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2023-2166",
      "cveUrl": "https://nvd.nist.gov/vuln/detail/CVE-2023-2166"
    }
  },
  "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\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8enet/can/af_can.c\u4e2d\u7684can\u534f\u8bae\u4e2d\u53d1\u73b0\u4e86\u4e00\u4e2a\u7a7a\u6307\u9488\u89e3\u5f15\u7528\u95ee\u9898\uff0cml_priv\u53ef\u80fd\u672a\u5728CAN\u5e27\u7684\u63a5\u6536\u8def\u5f84\u4e2d\u521d\u59cb\u5316\uff0c\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u5bfc\u81f4\u7cfb\u7edf\u5d29\u6e83\u6216\u5bfc\u81f4\u62d2\u7edd\u670d\u52a1\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://lore.kernel.org/lkml/CAO4mrfcV_07hbj8NUuZrA8FH-kaRsrFy-2metecpTuE5kKHn5w@mail.gmail.com/",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2023-56649",
  "openTime": "2023-07-18",
  "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\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8enet/can/af_can.c\u4e2d\u7684can\u534f\u8bae\u4e2d\u53d1\u73b0\u4e86\u4e00\u4e2a\u7a7a\u6307\u9488\u89e3\u5f15\u7528\u95ee\u9898\uff0cml_priv\u53ef\u80fd\u672a\u5728CAN\u5e27\u7684\u63a5\u6536\u8def\u5f84\u4e2d\u521d\u59cb\u5316\uff0c\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u5bfc\u81f4\u7cfb\u7edf\u5d29\u6e83\u6216\u5bfc\u81f4\u62d2\u7edd\u670d\u52a1\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 af_can.c\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e\u7684\u8865\u4e01",
  "products": {
    "product": "Linux Linux kernel \u003c6.1"
  },
  "referenceLink": "https://nvd.nist.gov/vuln/detail/CVE-2023-2166",
  "serverity": "\u4e2d",
  "submitTime": "2023-04-23",
  "title": "Linux Kernel af_can.c\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e"
}


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