Vulnerability-Lookup

OESA-2022-1996 (CVE-2021-3638)

Vulnerability from osv_openeuler – Published: 2022-10-14 11:05 – Updated: 2026-08-06 11:05 – Source website

Summary

qemu security update

Details

QEMU is a FAST! processor emulator using dynamic translation to achieve good emulation speed.

    QEMU has two operating modes:

    Full system emulation. In this mode, QEMU emulates a full system (for example a PC),
    including one or several processors and various peripherals. It can be used to launch
    different Operating Systems without rebooting the PC or to debug system code.

    User mode emulation. In this mode, QEMU can launch processes compiled for one CPU on another CPU.
    It can be used to launch the Wine Windows API emulator (https://www.winehq.org) or to ease
    cross-compilation and cross-debugging.
    You can refer to https://www.qemu.org for more infortmation.

Security Fix(es):

An out-of-bounds memory access flaw was found in the ATI VGA device emulation of QEMU. This flaw occurs in the ati_2d_blt() routine while handling MMIO write operations when the guest provides invalid values for the destination display parameters. A malicious guest could use this flaw to crash the QEMU process on the host, resulting in a denial of service.(CVE-2021-3638)

Severity

6.5 (Medium)


                    
                      CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H

References

URL

Type

	https://www.openeuler.org/en/security/safety-bull…	ADVISORY
	https://nvd.nist.gov/vuln/detail/CVE-2021-3638	ADVISORY

JSON

To clipboard

{
  "affected": [
    {
      "ecosystem_specific": {
        "aarch64": [
          "qemu-img-4.1.0-75.oe1.aarch64.rpm",
          "qemu-block-iscsi-4.1.0-75.oe1.aarch64.rpm",
          "qemu-block-rbd-4.1.0-75.oe1.aarch64.rpm",
          "qemu-debuginfo-4.1.0-75.oe1.aarch64.rpm",
          "qemu-4.1.0-75.oe1.aarch64.rpm",
          "qemu-debugsource-4.1.0-75.oe1.aarch64.rpm",
          "qemu-block-curl-4.1.0-75.oe1.aarch64.rpm",
          "qemu-guest-agent-4.1.0-75.oe1.aarch64.rpm",
          "qemu-block-ssh-4.1.0-75.oe1.aarch64.rpm"
        ],
        "noarch": [
          "qemu-help-4.1.0-75.oe1.noarch.rpm"
        ],
        "src": [
          "qemu-4.1.0-75.oe1.src.rpm"
        ],
        "x86_64": [
          "qemu-guest-agent-4.1.0-75.oe1.x86_64.rpm",
          "qemu-img-4.1.0-75.oe1.x86_64.rpm",
          "qemu-4.1.0-75.oe1.x86_64.rpm",
          "qemu-block-iscsi-4.1.0-75.oe1.x86_64.rpm",
          "qemu-block-curl-4.1.0-75.oe1.x86_64.rpm",
          "qemu-debuginfo-4.1.0-75.oe1.x86_64.rpm",
          "qemu-seabios-4.1.0-75.oe1.x86_64.rpm",
          "qemu-block-rbd-4.1.0-75.oe1.x86_64.rpm",
          "qemu-debugsource-4.1.0-75.oe1.x86_64.rpm",
          "qemu-block-ssh-4.1.0-75.oe1.x86_64.rpm"
        ]
      },
      "package": {
        "ecosystem": "openEuler:20.03-LTS-SP3",
        "name": "qemu",
        "purl": "pkg:rpm/openEuler/qemu\u0026distro=openEuler-20.03-LTS-SP3"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "4.1.0-75.oe1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "severity": "Medium"
  },
  "details": "QEMU is a FAST! processor emulator using dynamic translation to achieve good emulation speed.\n\n\t\tQEMU has two operating modes:\n\n\t\tFull system emulation. In this mode, QEMU emulates a full system (for example a PC),\n\t\tincluding one or several processors and various peripherals. It can be used to launch\n\t\tdifferent Operating Systems without rebooting the PC or to debug system code.\n\n\t\tUser mode emulation. In this mode, QEMU can launch processes compiled for one CPU on another CPU.\n\t\tIt can be used to launch the Wine Windows API emulator (https://www.winehq.org) or to ease\n\t\tcross-compilation and cross-debugging.\n\t\tYou can refer to https://www.qemu.org for more infortmation.\r\n\r\nSecurity Fix(es):\r\n\r\nAn out-of-bounds memory access flaw was found in the ATI VGA device emulation of QEMU. This flaw occurs in the ati_2d_blt() routine while handling MMIO write operations when the guest provides invalid values for the destination display parameters. A malicious guest could use this flaw to crash the QEMU process on the host, resulting in a denial of service.(CVE-2021-3638)",
  "id": "OESA-2022-1996",
  "modified": "2026-08-06T11:05:18Z",
  "published": "2022-10-14T11:05:18Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.openeuler.org/en/security/safety-bulletin/detail.html?id=openEuler-SA-2022-1996"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-3638"
    }
  ],
  "schema_version": "1.7.2",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "qemu security update",
  "upstream": [
    "CVE-2021-3638"
  ]
}

CVE-2021-3638 (GCVE-0-2021-3638)

Vulnerability from cvelistv5 – Published: 2022-03-03 00:00 – Updated: 2024-08-03 17:01

Summary

Severity

No CVSS data available.

CWE

CWE-787 - - Out-of-bounds Write

Assigner

redhat redhat root

References

6 references

URL	Tags
https://bugzilla.redhat.com/show_bug.cgi?id=1979858
https://ubuntu.com/security/CVE-2021-3638
https://lists.nongnu.org/archive/html/qemu-devel/…
https://security.netapp.com/advisory/ntap-2022040…
https://lists.fedoraproject.org/archives/list/pac…	vendor-advisory
https://lists.fedoraproject.org/archives/list/pac…	vendor-advisory

Impacted products

1 product

Vendor	Product	Version
n/a	QEMU	Affected: Affects qemu v4.0 to v6.1

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-03T17:01:07.554Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1979858"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://ubuntu.com/security/CVE-2021-3638"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://lists.nongnu.org/archive/html/qemu-devel/2021-09/msg01682.html"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://security.netapp.com/advisory/ntap-20220407-0003/"
          },
          {
            "name": "FEDORA-2022-22b1f8dae2",
            "tags": [
              "vendor-advisory",
              "x_transferred"
            ],
            "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/I7J5IRXJYLELW7D43A75LOWRUE5EU54O/"
          },
          {
            "name": "FEDORA-2023-c8a60f6f80",
            "tags": [
              "vendor-advisory",
              "x_transferred"
            ],
            "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GTVPHLLXJ65BUMFBUUZ35F3J632SLFRK/"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "QEMU",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "Affects qemu v4.0 to v6.1"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "An out-of-bounds memory access flaw was found in the ATI VGA device emulation of QEMU. This flaw occurs in the ati_2d_blt() routine while handling MMIO write operations when the guest provides invalid values for the destination display parameters. A malicious guest could use this flaw to crash the QEMU process on the host, resulting in a denial of service."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-787",
              "description": "CWE-787 - Out-of-bounds Write",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2023-01-19T00:00:00.000Z",
        "orgId": "53f830b8-0a3f-465b-8143-3b8a9948e749",
        "shortName": "redhat"
      },
      "references": [
        {
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1979858"
        },
        {
          "url": "https://ubuntu.com/security/CVE-2021-3638"
        },
        {
          "url": "https://lists.nongnu.org/archive/html/qemu-devel/2021-09/msg01682.html"
        },
        {
          "url": "https://security.netapp.com/advisory/ntap-20220407-0003/"
        },
        {
          "name": "FEDORA-2022-22b1f8dae2",
          "tags": [
            "vendor-advisory"
          ],
          "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/I7J5IRXJYLELW7D43A75LOWRUE5EU54O/"
        },
        {
          "name": "FEDORA-2023-c8a60f6f80",
          "tags": [
            "vendor-advisory"
          ],
          "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GTVPHLLXJ65BUMFBUUZ35F3J632SLFRK/"
        }
      ]
    }
  },
  "cveMetadata": {
    "assignerOrgId": "53f830b8-0a3f-465b-8143-3b8a9948e749",
    "assignerShortName": "redhat",
    "cveId": "CVE-2021-3638",
    "datePublished": "2022-03-03T00:00:00.000Z",
    "dateReserved": "2021-07-08T00:00:00.000Z",
    "dateUpdated": "2024-08-03T17:01:07.554Z",
    "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.

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.

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Action not permitted

OESA-2022-1996 (CVE-2021-3638)

CVE-2021-3638 (GCVE-0-2021-3638)

Tags

Sightings

Nomenclature

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