Vulnerability-Lookup

CNVD-2022-01771

Vulnerability from cnvd - Published: 2022-01-07

Title

Google Android Kernel权限提升漏洞（CNVD-2022-01771）

Description

Google Android是美国谷歌（Google）公司的的一套以Linux为基础的开源操作系统。 Google Android Kernel存在权限提升漏洞。该漏洞源于在lwis_periodic_io.c的periodic_io_work_func中由于释放后重用导致的越界写入。攻击者可利用该漏洞提升本地权限。

Severity

中

Patch Name

Google Android Kernel权限提升漏洞（CNVD-2022-01771）的补丁

Patch Description

Formal description

目前厂商已经发布了升级补丁以修复这个安全问题，请到厂商的主页下载： https://source.android.com/security/bulletin/pixel/2021-12-01

Reference

https://nvd.nist.gov/vuln/detail/CVE-2021-39638

Impacted products

Name
Google Android

Show details on source website

JSON

To clipboard

{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2021-39638",
      "cveUrl": "https://nvd.nist.gov/vuln/detail/CVE-2021-39638"
    }
  },
  "description": "Google Android\u662f\u7f8e\u56fd\u8c37\u6b4c\uff08Google\uff09\u516c\u53f8\u7684\u7684\u4e00\u5957\u4ee5Linux\u4e3a\u57fa\u7840\u7684\u5f00\u6e90\u64cd\u4f5c\u7cfb\u7edf\u3002\n\nGoogle Android Kernel\u5b58\u5728\u6743\u9650\u63d0\u5347\u6f0f\u6d1e\u3002\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u5728lwis_periodic_io.c\u7684periodic_io_work_func\u4e2d\u7531\u4e8e\u91ca\u653e\u540e\u91cd\u7528\u5bfc\u81f4\u7684\u8d8a\u754c\u5199\u5165\u3002\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u63d0\u5347\u672c\u5730\u6743\u9650\u3002",
  "formalWay": "\u76ee\u524d\u5382\u5546\u5df2\u7ecf\u53d1\u5e03\u4e86\u5347\u7ea7\u8865\u4e01\u4ee5\u4fee\u590d\u8fd9\u4e2a\u5b89\u5168\u95ee\u9898\uff0c\u8bf7\u5230\u5382\u5546\u7684\u4e3b\u9875\u4e0b\u8f7d\uff1a  https://source.android.com/security/bulletin/pixel/2021-12-01",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2022-01771",
  "openTime": "2022-01-07",
  "patchDescription": "Google Android\u662f\u7f8e\u56fd\u8c37\u6b4c\uff08Google\uff09\u516c\u53f8\u7684\u7684\u4e00\u5957\u4ee5Linux\u4e3a\u57fa\u7840\u7684\u5f00\u6e90\u64cd\u4f5c\u7cfb\u7edf\u3002\r\n\r\nGoogle Android Kernel\u5b58\u5728\u6743\u9650\u63d0\u5347\u6f0f\u6d1e\u3002\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u5728lwis_periodic_io.c\u7684periodic_io_work_func\u4e2d\u7531\u4e8e\u91ca\u653e\u540e\u91cd\u7528\u5bfc\u81f4\u7684\u8d8a\u754c\u5199\u5165\u3002\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u63d0\u5347\u672c\u5730\u6743\u9650\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": "Google Android Kernel\u6743\u9650\u63d0\u5347\u6f0f\u6d1e\uff08CNVD-2022-01771\uff09\u7684\u8865\u4e01",
  "products": {
    "product": "Google Android"
  },
  "referenceLink": "https://nvd.nist.gov/vuln/detail/CVE-2021-39638",
  "serverity": "\u4e2d",
  "submitTime": "2022-01-05",
  "title": "Google Android Kernel\u6743\u9650\u63d0\u5347\u6f0f\u6d1e\uff08CNVD-2022-01771\uff09"
}

CVE-2021-39638 (GCVE-0-2021-39638)

Vulnerability from cvelistv5 – Published: 2021-12-15 18:06 – Updated: 2024-08-04 02:13

Summary

In periodic_io_work_func of lwis_periodic_io.c, there is a possible out of bounds write due to a use after free. This could lead to local escalation of privilege with System execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android kernelAndroid ID: A-195607566References: N/A

Severity

No CVSS data available.

CWE

Elevation of privilege

Assigner

google_android Google root

References

1 reference

URL	Tags
https://source.android.com/security/bulletin/pixe…	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version
n/a	Android	Affected: Android kernel

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-04T02:13:37.350Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://source.android.com/security/bulletin/pixel/2021-12-01"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "Android",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "Android kernel"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In periodic_io_work_func of lwis_periodic_io.c, there is a possible out of bounds write due to a use after free. This could lead to local escalation of privilege with System execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android kernelAndroid ID: A-195607566References: N/A"
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "description": "Elevation of privilege",
              "lang": "en",
              "type": "text"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2021-12-15T18:06:43.000Z",
        "orgId": "baff130e-b8d5-4e15-b3d3-c3cf5d5545c6",
        "shortName": "google_android"
      },
      "references": [
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://source.android.com/security/bulletin/pixel/2021-12-01"
        }
      ],
      "x_legacyV4Record": {
        "CVE_data_meta": {
          "ASSIGNER": "security@android.com",
          "ID": "CVE-2021-39638",
          "STATE": "PUBLIC"
        },
        "affects": {
          "vendor": {
            "vendor_data": [
              {
                "product": {
                  "product_data": [
                    {
                      "product_name": "Android",
                      "version": {
                        "version_data": [
                          {
                            "version_value": "Android kernel"
                          }
                        ]
                      }
                    }
                  ]
                },
                "vendor_name": "n/a"
              }
            ]
          }
        },
        "data_format": "MITRE",
        "data_type": "CVE",
        "data_version": "4.0",
        "description": {
          "description_data": [
            {
              "lang": "eng",
              "value": "In periodic_io_work_func of lwis_periodic_io.c, there is a possible out of bounds write due to a use after free. This could lead to local escalation of privilege with System execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android kernelAndroid ID: A-195607566References: N/A"
            }
          ]
        },
        "problemtype": {
          "problemtype_data": [
            {
              "description": [
                {
                  "lang": "eng",
                  "value": "Elevation of privilege"
                }
              ]
            }
          ]
        },
        "references": {
          "reference_data": [
            {
              "name": "https://source.android.com/security/bulletin/pixel/2021-12-01",
              "refsource": "MISC",
              "url": "https://source.android.com/security/bulletin/pixel/2021-12-01"
            }
          ]
        }
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "baff130e-b8d5-4e15-b3d3-c3cf5d5545c6",
    "assignerShortName": "google_android",
    "cveId": "CVE-2021-39638",
    "datePublished": "2021-12-15T18:06:43.000Z",
    "dateReserved": "2021-08-23T00:00:00.000Z",
    "dateUpdated": "2024-08-04T02:13:37.350Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.