cnvd - cnvd-2020-28262

cnvd-2020-28262

Vulnerability from cnvd

Title

Linux kernel存在未明漏洞（CNVD-2020-28262）

Description

Linux kernel是美国Linux基金会发布的开源操作系统Linux所使用的内核。 Linux kernel 4.18版本至5.6.11版本中存在安全漏洞。攻击者可利用该漏洞导致资源耗尽。

Severity

中

Formal description

目前厂商尚未提供相关漏洞补丁链接，请关注厂商主页随时更新： https://www.kernel.org/

Reference

https://nvd.nist.gov/vuln/detail/CVE-2019-20794

Impacted products

Name
Linux kernel >=4.18，<=5.6.11

Show details on source website

To clipboard

{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2019-20794"
    }
  },
  "description": "Linux kernel\u662f\u7f8e\u56fdLinux\u57fa\u91d1\u4f1a\u53d1\u5e03\u7684\u5f00\u6e90\u64cd\u4f5c\u7cfb\u7edfLinux\u6240\u4f7f\u7528\u7684\u5185\u6838\u3002\n\nLinux kernel 4.18\u7248\u672c\u81f35.6.11\u7248\u672c\u4e2d\u5b58\u5728\u5b89\u5168\u6f0f\u6d1e\u3002\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u5bfc\u81f4\u8d44\u6e90\u8017\u5c3d\u3002",
  "formalWay": "\u76ee\u524d\u5382\u5546\u5c1a\u672a\u63d0\u4f9b\u76f8\u5173\u6f0f\u6d1e\u8865\u4e01\u94fe\u63a5\uff0c\u8bf7\u5173\u6ce8\u5382\u5546\u4e3b\u9875\u968f\u65f6\u66f4\u65b0\uff1a\r\nhttps://www.kernel.org/",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2020-28262",
  "openTime": "2020-05-14",
  "products": {
    "product": "Linux kernel \u003e=4.18\uff0c\u003c=5.6.11"
  },
  "referenceLink": "https://nvd.nist.gov/vuln/detail/CVE-2019-20794",
  "serverity": "\u4e2d",
  "submitTime": "2020-05-11",
  "title": "Linux kernel\u5b58\u5728\u672a\u660e\u6f0f\u6d1e\uff08CNVD-2020-28262\uff09"
}

CVE-2019-20794 (GCVE-0-2019-20794)

Vulnerability from cvelistv5

Published

2020-05-09 17:35

Modified

2024-08-05 02:53

Severity ?

CWE

n/a

Summary

An issue was discovered in the Linux kernel 4.18 through 5.6.11 when unprivileged user namespaces are allowed. A user can create their own PID namespace, and mount a FUSE filesystem. Upon interaction with this FUSE filesystem, if the userspace component is terminated via a kill of the PID namespace's pid 1, it will result in a hung task, and resources being permanently locked up until system reboot. This can result in resource exhaustion.

References

URL

Tags

	https://github.com/sargun/fuse-example	x_refsource_MISC
	https://sourceforge.net/p/fuse/mailman/message/36598753/	x_refsource_MISC
	https://security.netapp.com/advisory/ntap-20200608-0001/	x_refsource_CONFIRM
	http://www.openwall.com/lists/oss-security/2020/08/24/1	mailing-list, x_refsource_MLIST

Impacted products

	Vendor	Product	Version
	n/a	n/a	Version: n/a

Show details on NVD website

To clipboard

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-05T02:53:09.326Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://github.com/sargun/fuse-example"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://sourceforge.net/p/fuse/mailman/message/36598753/"
          },
          {
            "tags": [
              "x_refsource_CONFIRM",
              "x_transferred"
            ],
            "url": "https://security.netapp.com/advisory/ntap-20200608-0001/"
          },
          {
            "name": "[oss-security] 20200824 CVE-2019-20794 kernel: task processes not being properly ended could lead to resource exhaustion",
            "tags": [
              "mailing-list",
              "x_refsource_MLIST",
              "x_transferred"
            ],
            "url": "http://www.openwall.com/lists/oss-security/2020/08/24/1"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "n/a",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "An issue was discovered in the Linux kernel 4.18 through 5.6.11 when unprivileged user namespaces are allowed. A user can create their own PID namespace, and mount a FUSE filesystem. Upon interaction with this FUSE filesystem, if the userspace component is terminated via a kill of the PID namespace\u0027s pid 1, it will result in a hung task, and resources being permanently locked up until system reboot. This can result in resource exhaustion."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "description": "n/a",
              "lang": "en",
              "type": "text"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2020-08-24T11:06:07",
        "orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
        "shortName": "mitre"
      },
      "references": [
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/sargun/fuse-example"
        },
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://sourceforge.net/p/fuse/mailman/message/36598753/"
        },
        {
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://security.netapp.com/advisory/ntap-20200608-0001/"
        },
        {
          "name": "[oss-security] 20200824 CVE-2019-20794 kernel: task processes not being properly ended could lead to resource exhaustion",
          "tags": [
            "mailing-list",
            "x_refsource_MLIST"
          ],
          "url": "http://www.openwall.com/lists/oss-security/2020/08/24/1"
        }
      ],
      "x_legacyV4Record": {
        "CVE_data_meta": {
          "ASSIGNER": "cve@mitre.org",
          "ID": "CVE-2019-20794",
          "STATE": "PUBLIC"
        },
        "affects": {
          "vendor": {
            "vendor_data": [
              {
                "product": {
                  "product_data": [
                    {
                      "product_name": "n/a",
                      "version": {
                        "version_data": [
                          {
                            "version_value": "n/a"
                          }
                        ]
                      }
                    }
                  ]
                },
                "vendor_name": "n/a"
              }
            ]
          }
        },
        "data_format": "MITRE",
        "data_type": "CVE",
        "data_version": "4.0",
        "description": {
          "description_data": [
            {
              "lang": "eng",
              "value": "An issue was discovered in the Linux kernel 4.18 through 5.6.11 when unprivileged user namespaces are allowed. A user can create their own PID namespace, and mount a FUSE filesystem. Upon interaction with this FUSE filesystem, if the userspace component is terminated via a kill of the PID namespace\u0027s pid 1, it will result in a hung task, and resources being permanently locked up until system reboot. This can result in resource exhaustion."
            }
          ]
        },
        "problemtype": {
          "problemtype_data": [
            {
              "description": [
                {
                  "lang": "eng",
                  "value": "n/a"
                }
              ]
            }
          ]
        },
        "references": {
          "reference_data": [
            {
              "name": "https://github.com/sargun/fuse-example",
              "refsource": "MISC",
              "url": "https://github.com/sargun/fuse-example"
            },
            {
              "name": "https://sourceforge.net/p/fuse/mailman/message/36598753/",
              "refsource": "MISC",
              "url": "https://sourceforge.net/p/fuse/mailman/message/36598753/"
            },
            {
              "name": "https://security.netapp.com/advisory/ntap-20200608-0001/",
              "refsource": "CONFIRM",
              "url": "https://security.netapp.com/advisory/ntap-20200608-0001/"
            },
            {
              "name": "[oss-security] 20200824 CVE-2019-20794 kernel: task processes not being properly ended could lead to resource exhaustion",
              "refsource": "MLIST",
              "url": "http://www.openwall.com/lists/oss-security/2020/08/24/1"
            }
          ]
        }
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
    "assignerShortName": "mitre",
    "cveId": "CVE-2019-20794",
    "datePublished": "2020-05-09T17:35:50",
    "dateReserved": "2020-05-09T00:00:00",
    "dateUpdated": "2024-08-05T02:53:09.326Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

Log in or create an account to share your comment.

Tags

Taxonomy of the tags.

All sightings related to this event Export sightings related to this event

Sightings

Author	Source	Type	Date

Nomenclature

Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
Confirmed: The vulnerability is confirmed from an analyst perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
Patched: This vulnerability was successfully patched by the user reporting the sighting.
Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
Not confirmed: The user expresses doubt about the veracity of the vulnerability.
Not patched: This vulnerability was not successfully patched by the user reporting the sighting.