cnvd - cnvd-2021-60521

cnvd-2021-60521

Vulnerability from cnvd

Title: Linux kernel拒绝服务漏洞（CNVD-2021-60521）

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存在安全漏洞，该漏洞是由mac80211子系统中radiotap解析器中的空指针解引用缺陷造成的。通过Mac80211子系统，本地攻击者可以利用此漏洞造成拒绝服务情况。

Severity: 中

Patch Name: Linux kernel拒绝服务漏洞（CNVD-2021-60521）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存在安全漏洞，该漏洞是由mac80211子系统中radiotap解析器中的空指针解引用缺陷造成的。通过Mac80211子系统，本地攻击者可以利用此漏洞造成拒绝服务情况。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:

目前厂商已发布升级补丁以修复漏洞，详情请关注厂商主页： https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.12.13

Reference: https://github.com/torvalds/linux/commit/bddc0c411a45d3718ac535a070f349be8eca8d48

Impacted products

Name
Linux Linux kernel <5.12.13

Show details on source website

JSON

To clipboard

{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2021-38206"
    }
  },
  "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\u5b89\u5168\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u662f\u7531mac80211\u5b50\u7cfb\u7edf\u4e2dradiotap\u89e3\u6790\u5668\u4e2d\u7684\u7a7a\u6307\u9488\u89e3\u5f15\u7528\u7f3a\u9677\u9020\u6210\u7684\u3002\u901a\u8fc7Mac80211\u5b50\u7cfb\u7edf\uff0c\u672c\u5730\u653b\u51fb\u8005\u53ef\u4ee5\u5229\u7528\u6b64\u6f0f\u6d1e\u9020\u6210\u62d2\u7edd\u670d\u52a1\u60c5\u51b5\u3002",
  "formalWay": "\u76ee\u524d\u5382\u5546\u5df2\u53d1\u5e03\u5347\u7ea7\u8865\u4e01\u4ee5\u4fee\u590d\u6f0f\u6d1e\uff0c\u8be6\u60c5\u8bf7\u5173\u6ce8\u5382\u5546\u4e3b\u9875\uff1a\r\nhttps://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.12.13",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2021-60521",
  "openTime": "2021-08-10",
  "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\u5b89\u5168\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u662f\u7531mac80211\u5b50\u7cfb\u7edf\u4e2dradiotap\u89e3\u6790\u5668\u4e2d\u7684\u7a7a\u6307\u9488\u89e3\u5f15\u7528\u7f3a\u9677\u9020\u6210\u7684\u3002\u901a\u8fc7Mac80211\u5b50\u7cfb\u7edf\uff0c\u672c\u5730\u653b\u51fb\u8005\u53ef\u4ee5\u5229\u7528\u6b64\u6f0f\u6d1e\u9020\u6210\u62d2\u7edd\u670d\u52a1\u60c5\u51b5\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\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e\uff08CNVD-2021-60521\uff09\u7684\u8865\u4e01",
  "products": {
    "product": "Linux Linux kernel \u003c5.12.13"
  },
  "referenceLink": "https://github.com/torvalds/linux/commit/bddc0c411a45d3718ac535a070f349be8eca8d48",
  "serverity": "\u4e2d",
  "submitTime": "2021-08-10",
  "title": "Linux kernel\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e\uff08CNVD-2021-60521\uff09"
}

CVE-2021-38206 (GCVE-0-2021-38206)

Vulnerability from cvelistv5

Published

2021-08-08 19:23

Modified

2024-08-04 01:37

Severity ?

CWE

Summary

The mac80211 subsystem in the Linux kernel before 5.12.13, when a device supporting only 5 GHz is used, allows attackers to cause a denial of service (NULL pointer dereference in the radiotap parser) by injecting a frame with 802.11a rates.

References

▼	URL	Tags
	https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.12.13	x_refsource_MISC
	https://github.com/torvalds/linux/commit/bddc0c411a45d3718ac535a070f349be8eca8d48	x_refsource_MISC

Impacted products

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

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-04T01:37:16.225Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
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              "x_transferred"
            ],
            "url": "https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.12.13"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://github.com/torvalds/linux/commit/bddc0c411a45d3718ac535a070f349be8eca8d48"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "n/a",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "The mac80211 subsystem in the Linux kernel before 5.12.13, when a device supporting only 5 GHz is used, allows attackers to cause a denial of service (NULL pointer dereference in the radiotap parser) by injecting a frame with 802.11a rates."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "description": "n/a",
              "lang": "en",
              "type": "text"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2021-08-08T19:23:24",
        "orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
        "shortName": "mitre"
      },
      "references": [
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.12.13"
        },
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/torvalds/linux/commit/bddc0c411a45d3718ac535a070f349be8eca8d48"
        }
      ],
      "x_legacyV4Record": {
        "CVE_data_meta": {
          "ASSIGNER": "cve@mitre.org",
          "ID": "CVE-2021-38206",
          "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": "The mac80211 subsystem in the Linux kernel before 5.12.13, when a device supporting only 5 GHz is used, allows attackers to cause a denial of service (NULL pointer dereference in the radiotap parser) by injecting a frame with 802.11a rates."
            }
          ]
        },
        "problemtype": {
          "problemtype_data": [
            {
              "description": [
                {
                  "lang": "eng",
                  "value": "n/a"
                }
              ]
            }
          ]
        },
        "references": {
          "reference_data": [
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              "name": "https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.12.13",
              "refsource": "MISC",
              "url": "https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.12.13"
            },
            {
              "name": "https://github.com/torvalds/linux/commit/bddc0c411a45d3718ac535a070f349be8eca8d48",
              "refsource": "MISC",
              "url": "https://github.com/torvalds/linux/commit/bddc0c411a45d3718ac535a070f349be8eca8d48"
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          ]
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    }
  },
  "cveMetadata": {
    "assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
    "assignerShortName": "mitre",
    "cveId": "CVE-2021-38206",
    "datePublished": "2021-08-08T19:23:24",
    "dateReserved": "2021-08-08T00:00:00",
    "dateUpdated": "2024-08-04T01:37:16.225Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

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.
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.

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