cnvd - cnvd-2020-61025

cnvd-2020-61025

Vulnerability from cnvd

Title: Linux kernel代码问题漏洞（CNVD-2020-61025）

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 con_font_op()存在代码问题漏洞，该漏洞源于网络系统或产品的代码开发过程中存在设计或实现不当的问题，攻击者可以利用此漏洞使用被释放的内存，从而导致拒绝服务或执行自定义代码。

Severity: 高

Formal description:

厂商尚未提供漏洞修复方案，请关注厂商主页更新： https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=ca4463bf8438b403596edd0ec961ca0d4fbe0220

Reference: https://access.redhat.com/security/cve/cve-2020-25668

Impacted products

Name
Linux Linux kernel

Show details on source website

JSON

To clipboard

{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2020-25668",
      "cveUrl": "https://nvd.nist.gov/vuln/detail/CVE-2020-25668"
    }
  },
  "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 con_font_op()\u5b58\u5728\u4ee3\u7801\u95ee\u9898\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u7f51\u7edc\u7cfb\u7edf\u6216\u4ea7\u54c1\u7684\u4ee3\u7801\u5f00\u53d1\u8fc7\u7a0b\u4e2d\u5b58\u5728\u8bbe\u8ba1\u6216\u5b9e\u73b0\u4e0d\u5f53\u7684\u95ee\u9898\uff0c\u653b\u51fb\u8005\u53ef\u4ee5\u5229\u7528\u6b64\u6f0f\u6d1e\u4f7f\u7528\u88ab\u91ca\u653e\u7684\u5185\u5b58\uff0c\u4ece\u800c\u5bfc\u81f4\u62d2\u7edd\u670d\u52a1\u6216\u6267\u884c\u81ea\u5b9a\u4e49\u4ee3\u7801\u3002",
  "formalWay": "\u5382\u5546\u5c1a\u672a\u63d0\u4f9b\u6f0f\u6d1e\u4fee\u590d\u65b9\u6848\uff0c\u8bf7\u5173\u6ce8\u5382\u5546\u4e3b\u9875\u66f4\u65b0\uff1a\r\nhttps://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=ca4463bf8438b403596edd0ec961ca0d4fbe0220",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2020-61025",
  "openTime": "2020-11-07",
  "products": {
    "product": "Linux Linux kernel"
  },
  "referenceLink": "https://access.redhat.com/security/cve/cve-2020-25668",
  "serverity": "\u9ad8",
  "submitTime": "2020-11-03",
  "title": "Linux kernel\u4ee3\u7801\u95ee\u9898\u6f0f\u6d1e\uff08CNVD-2020-61025\uff09"
}

CVE-2020-25668 (GCVE-0-2020-25668)

Vulnerability from cvelistv5

Published

2021-05-26 11:11

Modified

2024-08-04 15:40

Severity ?

CWE

CWE-362 - -> CWE-416

Summary

A flaw was found in Linux Kernel because access to the global variable fg_console is not properly synchronized leading to a use after free in con_font_op.

References

▼	URL	Tags
	http://www.openwall.com/lists/oss-security/2020/10/30/1	mailing-list, x_refsource_MLIST
	http://www.openwall.com/lists/oss-security/2020/11/04/3	mailing-list, x_refsource_MLIST
	https://lists.debian.org/debian-lts-announce/2020/12/msg00015.html	mailing-list, x_refsource_MLIST
	https://lists.debian.org/debian-lts-announce/2020/12/msg00027.html	mailing-list, x_refsource_MLIST
	https://www.openwall.com/lists/oss-security/2020/11/04/3%2C	x_refsource_MISC
	https://www.openwall.com/lists/oss-security/2020/10/30/1%2C	x_refsource_MISC
	https://bugzilla.redhat.com/show_bug.cgi?id=1893287%2C	x_refsource_MISC
	https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit?id=90bfdeef83f1d6c696039b6a917190dcbbad3220	x_refsource_MISC
	https://security.netapp.com/advisory/ntap-20210702-0005/	x_refsource_CONFIRM

Impacted products

	Vendor	Product	Version
	n/a	Linux Kernel	Version: 5.9.2

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-04T15:40:36.882Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "name": "[oss-security] 20201030 CVE-2020-25668: Linux kernel concurrency use-after-free in vt",
            "tags": [
              "mailing-list",
              "x_refsource_MLIST",
              "x_transferred"
            ],
            "url": "http://www.openwall.com/lists/oss-security/2020/10/30/1"
          },
          {
            "name": "[oss-security] 20201104 Re: CVE-2020-25668: Linux kernel concurrency use-after-free in vt",
            "tags": [
              "mailing-list",
              "x_refsource_MLIST",
              "x_transferred"
            ],
            "url": "http://www.openwall.com/lists/oss-security/2020/11/04/3"
          },
          {
            "name": "[debian-lts-announce] 20201210 [SECURITY] [DLA 2483-1] linux-4.19 security update",
            "tags": [
              "mailing-list",
              "x_refsource_MLIST",
              "x_transferred"
            ],
            "url": "https://lists.debian.org/debian-lts-announce/2020/12/msg00015.html"
          },
          {
            "name": "[debian-lts-announce] 20201218 [SECURITY] [DLA 2494-1] linux security update",
            "tags": [
              "mailing-list",
              "x_refsource_MLIST",
              "x_transferred"
            ],
            "url": "https://lists.debian.org/debian-lts-announce/2020/12/msg00027.html"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://www.openwall.com/lists/oss-security/2020/11/04/3%2C"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://www.openwall.com/lists/oss-security/2020/10/30/1%2C"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1893287%2C"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit?id=90bfdeef83f1d6c696039b6a917190dcbbad3220"
          },
          {
            "tags": [
              "x_refsource_CONFIRM",
              "x_transferred"
            ],
            "url": "https://security.netapp.com/advisory/ntap-20210702-0005/"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "Linux Kernel",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "5.9.2"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "A flaw was found in Linux Kernel because access to the global variable fg_console is not properly synchronized leading to a use after free in con_font_op."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-362",
              "description": "CWE-362 -\u003e CWE-416",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2021-07-02T11:06:20",
        "orgId": "53f830b8-0a3f-465b-8143-3b8a9948e749",
        "shortName": "redhat"
      },
      "references": [
        {
          "name": "[oss-security] 20201030 CVE-2020-25668: Linux kernel concurrency use-after-free in vt",
          "tags": [
            "mailing-list",
            "x_refsource_MLIST"
          ],
          "url": "http://www.openwall.com/lists/oss-security/2020/10/30/1"
        },
        {
          "name": "[oss-security] 20201104 Re: CVE-2020-25668: Linux kernel concurrency use-after-free in vt",
          "tags": [
            "mailing-list",
            "x_refsource_MLIST"
          ],
          "url": "http://www.openwall.com/lists/oss-security/2020/11/04/3"
        },
        {
          "name": "[debian-lts-announce] 20201210 [SECURITY] [DLA 2483-1] linux-4.19 security update",
          "tags": [
            "mailing-list",
            "x_refsource_MLIST"
          ],
          "url": "https://lists.debian.org/debian-lts-announce/2020/12/msg00015.html"
        },
        {
          "name": "[debian-lts-announce] 20201218 [SECURITY] [DLA 2494-1] linux security update",
          "tags": [
            "mailing-list",
            "x_refsource_MLIST"
          ],
          "url": "https://lists.debian.org/debian-lts-announce/2020/12/msg00027.html"
        },
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://www.openwall.com/lists/oss-security/2020/11/04/3%2C"
        },
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://www.openwall.com/lists/oss-security/2020/10/30/1%2C"
        },
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1893287%2C"
        },
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit?id=90bfdeef83f1d6c696039b6a917190dcbbad3220"
        },
        {
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://security.netapp.com/advisory/ntap-20210702-0005/"
        }
      ],
      "x_legacyV4Record": {
        "CVE_data_meta": {
          "ASSIGNER": "secalert@redhat.com",
          "ID": "CVE-2020-25668",
          "STATE": "PUBLIC"
        },
        "affects": {
          "vendor": {
            "vendor_data": [
              {
                "product": {
                  "product_data": [
                    {
                      "product_name": "Linux Kernel",
                      "version": {
                        "version_data": [
                          {
                            "version_value": "5.9.2"
                          }
                        ]
                      }
                    }
                  ]
                },
                "vendor_name": "n/a"
              }
            ]
          }
        },
        "data_format": "MITRE",
        "data_type": "CVE",
        "data_version": "4.0",
        "description": {
          "description_data": [
            {
              "lang": "eng",
              "value": "A flaw was found in Linux Kernel because access to the global variable fg_console is not properly synchronized leading to a use after free in con_font_op."
            }
          ]
        },
        "problemtype": {
          "problemtype_data": [
            {
              "description": [
                {
                  "lang": "eng",
                  "value": "CWE-362 -\u003e CWE-416"
                }
              ]
            }
          ]
        },
        "references": {
          "reference_data": [
            {
              "name": "[oss-security] 20201030 CVE-2020-25668: Linux kernel concurrency use-after-free in vt",
              "refsource": "MLIST",
              "url": "http://www.openwall.com/lists/oss-security/2020/10/30/1"
            },
            {
              "name": "[oss-security] 20201104 Re: CVE-2020-25668: Linux kernel concurrency use-after-free in vt",
              "refsource": "MLIST",
              "url": "http://www.openwall.com/lists/oss-security/2020/11/04/3"
            },
            {
              "name": "[debian-lts-announce] 20201210 [SECURITY] [DLA 2483-1] linux-4.19 security update",
              "refsource": "MLIST",
              "url": "https://lists.debian.org/debian-lts-announce/2020/12/msg00015.html"
            },
            {
              "name": "[debian-lts-announce] 20201218 [SECURITY] [DLA 2494-1] linux security update",
              "refsource": "MLIST",
              "url": "https://lists.debian.org/debian-lts-announce/2020/12/msg00027.html"
            },
            {
              "name": "https://www.openwall.com/lists/oss-security/2020/11/04/3,",
              "refsource": "MISC",
              "url": "https://www.openwall.com/lists/oss-security/2020/11/04/3,"
            },
            {
              "name": "https://www.openwall.com/lists/oss-security/2020/10/30/1,",
              "refsource": "MISC",
              "url": "https://www.openwall.com/lists/oss-security/2020/10/30/1,"
            },
            {
              "name": "https://bugzilla.redhat.com/show_bug.cgi?id=1893287,",
              "refsource": "MISC",
              "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1893287,"
            },
            {
              "name": "https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit?id=90bfdeef83f1d6c696039b6a917190dcbbad3220",
              "refsource": "MISC",
              "url": "https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit?id=90bfdeef83f1d6c696039b6a917190dcbbad3220"
            },
            {
              "name": "https://security.netapp.com/advisory/ntap-20210702-0005/",
              "refsource": "CONFIRM",
              "url": "https://security.netapp.com/advisory/ntap-20210702-0005/"
            }
          ]
        }
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "53f830b8-0a3f-465b-8143-3b8a9948e749",
    "assignerShortName": "redhat",
    "cveId": "CVE-2020-25668",
    "datePublished": "2021-05-26T11:11:04",
    "dateReserved": "2020-09-16T00:00:00",
    "dateUpdated": "2024-08-04T15:40:36.882Z",
    "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.

Action not permitted