github - ghsa-pvw2-9h4r-c5cr

ghsa-pvw2-9h4r-c5cr

Vulnerability from github

Published

2022-09-25 00:00

Modified

2022-09-27 00:00

Severity ?

9.8 (Critical) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Details

An internal reference count is held on the buffer pool, incremented every time a new buffer is created from the pool. The reference count is maintained as an int; on LP64 systems this can cause the reference count to overflow if the client creates a large number of wl_shm buffer objects, or if it can coerce the server to create a large number of external references to the buffer storage. With the reference count overflowing, a use-after-free can be constructed on the wl_shm_pool tracking structure, where values may be incremented or decremented; it may also be possible to construct a limited oracle to leak 4 bytes of server-side memory to the attacking client at a time.

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{
  "affected": [],
  "aliases": [
    "CVE-2021-3782"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-190"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2022-09-23T16:15:00Z",
    "severity": "CRITICAL"
  },
  "details": "An internal reference count is held on the buffer pool, incremented every time a new buffer is created from the pool. The reference count is maintained as an int; on LP64 systems this can cause the reference count to overflow if the client creates a large number of wl_shm buffer objects, or if it can coerce the server to create a large number of external references to the buffer storage. With the reference count overflowing, a use-after-free can be constructed on the wl_shm_pool tracking structure, where values may be incremented or decremented; it may also be possible to construct a limited oracle to leak 4 bytes of server-side memory to the attacking client at a time.",
  "id": "GHSA-pvw2-9h4r-c5cr",
  "modified": "2022-09-27T00:00:16Z",
  "published": "2022-09-25T00:00:20Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-3782"
    },
    {
      "type": "WEB",
      "url": "https://gitlab.freedesktop.org/wayland/wayland/-/issues/224"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2021-3782 (GCVE-0-2021-3782)

Vulnerability from cvelistv5

Published

2022-09-23 15:26

Modified

2025-05-22 18:21

Severity ?

6.6 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:H

CWE

CWE-190 - (|CWE-911)->CWE-416

Summary

An internal reference count is held on the buffer pool, incremented every time a new buffer is created from the pool. The reference count is maintained as an int; on LP64 systems this can cause the reference count to overflow if the client creates a large number of wl_shm buffer objects, or if it can coerce the server to create a large number of external references to the buffer storage. With the reference count overflowing, a use-after-free can be constructed on the wl_shm_pool tracking structure, where values may be incremented or decremented; it may also be possible to construct a limited oracle to leak 4 bytes of server-side memory to the attacking client at a time.

References

URL

Tags

https://gitlab.freedesktop.org/wayland/wayland/-/issues/224

x_refsource_MISC

Impacted products

	Vendor	Product	Version
	n/a	wayland	Version: wayland 1.20.91

Show details on NVD website

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{
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      {
        "providerMetadata": {
          "dateUpdated": "2024-08-03T17:09:08.931Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
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        "references": [
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              "x_transferred"
            ],
            "url": "https://gitlab.freedesktop.org/wayland/wayland/-/issues/224"
          }
        ],
        "title": "CVE Program Container"
      },
      {
        "metrics": [
          {
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              "attackComplexity": "LOW",
              "attackVector": "LOCAL",
              "availabilityImpact": "HIGH",
              "baseScore": 6.6,
              "baseSeverity": "MEDIUM",
              "confidentialityImpact": "LOW",
              "integrityImpact": "LOW",
              "privilegesRequired": "LOW",
              "scope": "UNCHANGED",
              "userInteraction": "NONE",
              "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:H",
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            }
          },
          {
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                "options": [
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                  },
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                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2025-05-22T18:20:59.707899Z",
                "version": "2.0.3"
              },
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          }
        ],
        "providerMetadata": {
          "dateUpdated": "2025-05-22T18:21:26.824Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "wayland",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "wayland 1.20.91"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
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        }
      ],
      "problemTypes": [
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          "descriptions": [
            {
              "cweId": "CWE-190",
              "description": "(CWE-190|CWE-911)-\u003eCWE-416",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2022-09-23T15:26:59.000Z",
        "orgId": "53f830b8-0a3f-465b-8143-3b8a9948e749",
        "shortName": "redhat"
      },
      "references": [
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://gitlab.freedesktop.org/wayland/wayland/-/issues/224"
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      ],
      "x_legacyV4Record": {
        "CVE_data_meta": {
          "ASSIGNER": "secalert@redhat.com",
          "ID": "CVE-2021-3782",
          "STATE": "PUBLIC"
        },
        "affects": {
          "vendor": {
            "vendor_data": [
              {
                "product": {
                  "product_data": [
                    {
                      "product_name": "wayland",
                      "version": {
                        "version_data": [
                          {
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                          }
                        ]
                      }
                    }
                  ]
                },
                "vendor_name": "n/a"
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        },
        "data_format": "MITRE",
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        "data_version": "4.0",
        "description": {
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            }
          ]
        },
        "problemtype": {
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                }
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        },
        "references": {
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  },
  "cveMetadata": {
    "assignerOrgId": "53f830b8-0a3f-465b-8143-3b8a9948e749",
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    "datePublished": "2022-09-23T15:26:59.000Z",
    "dateReserved": "2021-09-09T00:00:00.000Z",
    "dateUpdated": "2025-05-22T18:21:26.824Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

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