github - ghsa-wpx2-5m9q-j3g7

GHSA-WPX2-5M9Q-J3G7

Vulnerability from github – Published: 2024-03-01 00:30 – Updated: 2024-12-10 18:31

Details

In the Linux kernel, the following vulnerability has been resolved:

KVM: Destroy I/O bus devices on unregister failure after sync'ing SRCU

If allocating a new instance of an I/O bus fails when unregistering a device, wait to destroy the device until after all readers are guaranteed to see the new null bus. Destroying devices before the bus is nullified could lead to use-after-free since readers expect the devices on their reference of the bus to remain valid.

Severity ?

7.8 (High)


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

Show details on source website

JSON

To clipboard

{
  "affected": [],
  "aliases": [
    "CVE-2021-47061"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-416"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-02-29T23:15:07Z",
    "severity": "HIGH"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nKVM: Destroy I/O bus devices on unregister failure _after_ sync\u0027ing SRCU\n\nIf allocating a new instance of an I/O bus fails when unregistering a\ndevice, wait to destroy the device until after all readers are guaranteed\nto see the new null bus.  Destroying devices before the bus is nullified\ncould lead to use-after-free since readers expect the devices on their\nreference of the bus to remain valid.",
  "id": "GHSA-wpx2-5m9q-j3g7",
  "modified": "2024-12-10T18:31:06Z",
  "published": "2024-03-01T00:30:28Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-47061"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/03c6cccedd3913006744faa252a4da5145299343"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/2ee3757424be7c1cd1d0bbfa6db29a7edd82a250"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/30f46c6993731efb2a690c9197c0fd9ed425da2d"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/4e899ca848636b37e9ac124bc1723862a7d7d927"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2021-47061 (GCVE-0-2021-47061)

Vulnerability from cvelistv5 – Published: 2024-02-29 22:37 – Updated: 2025-05-04 12:41

Summary

In the Linux kernel, the following vulnerability has been resolved: KVM: Destroy I/O bus devices on unregister failure _after_ sync'ing SRCU If allocating a new instance of an I/O bus fails when unregistering a device, wait to destroy the device until after all readers are guaranteed to see the new null bus. Destroying devices before the bus is nullified could lead to use-after-free since readers expect the devices on their reference of the bus to remain valid.

Severity ?

No CVSS data available.

Assigner

Linux

References

URL

Tags

	https://git.kernel.org/stable/c/03c6cccedd3913006…
	https://git.kernel.org/stable/c/4e899ca848636b37e…
	https://git.kernel.org/stable/c/30f46c6993731efb2…
	https://git.kernel.org/stable/c/2ee3757424be7c1cd…

Impacted products

Vendor

Product

Version

Linux

Affected: f65886606c2d3b562716de030706dfe1bea4ed5e , < 03c6cccedd3913006744faa252a4da5145299343 (git)
Affected: f65886606c2d3b562716de030706dfe1bea4ed5e , < 4e899ca848636b37e9ac124bc1723862a7d7d927 (git)
Affected: f65886606c2d3b562716de030706dfe1bea4ed5e , < 30f46c6993731efb2a690c9197c0fd9ed425da2d (git)
Affected: f65886606c2d3b562716de030706dfe1bea4ed5e , < 2ee3757424be7c1cd1d0bbfa6db29a7edd82a250 (git)
Affected: f0dfffce3f4ffd5f822568a4a6fb34c010e939d1 (git)
Affected: 840e124f89a5127e7eb97ebf377f4b8ca745c070 (git)
Affected: 40a023f681befd9b2862a3c16fb306a38b359ae5 (git)
Affected: 19184bd06f488af62924ff1747614a8cb284ad63 (git)
Affected: 41b2ea7a6a11e2b1a7f2c29e1675a709a6b2b98d (git)
Affected: 68c125324b5e1d1d22805653735442923d896a1d (git)

Linux

Affected: 5.9
Unaffected: 0 , < 5.9 (semver)
Unaffected: 5.10.37 , ≤ 5.10.* (semver)
Unaffected: 5.11.21 , ≤ 5.11.* (semver)
Unaffected: 5.12.4 , ≤ 5.12.* (semver)
Unaffected: 5.13 , ≤ * (original_commit_for_fix)

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-04T05:24:39.011Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://git.kernel.org/stable/c/03c6cccedd3913006744faa252a4da5145299343"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://git.kernel.org/stable/c/4e899ca848636b37e9ac124bc1723862a7d7d927"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://git.kernel.org/stable/c/30f46c6993731efb2a690c9197c0fd9ed425da2d"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://git.kernel.org/stable/c/2ee3757424be7c1cd1d0bbfa6db29a7edd82a250"
          }
        ],
        "title": "CVE Program Container"
      },
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2021-47061",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2024-08-08T18:46:02.297393Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2024-08-08T18:46:13.135Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "virt/kvm/kvm_main.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "03c6cccedd3913006744faa252a4da5145299343",
              "status": "affected",
              "version": "f65886606c2d3b562716de030706dfe1bea4ed5e",
              "versionType": "git"
            },
            {
              "lessThan": "4e899ca848636b37e9ac124bc1723862a7d7d927",
              "status": "affected",
              "version": "f65886606c2d3b562716de030706dfe1bea4ed5e",
              "versionType": "git"
            },
            {
              "lessThan": "30f46c6993731efb2a690c9197c0fd9ed425da2d",
              "status": "affected",
              "version": "f65886606c2d3b562716de030706dfe1bea4ed5e",
              "versionType": "git"
            },
            {
              "lessThan": "2ee3757424be7c1cd1d0bbfa6db29a7edd82a250",
              "status": "affected",
              "version": "f65886606c2d3b562716de030706dfe1bea4ed5e",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "f0dfffce3f4ffd5f822568a4a6fb34c010e939d1",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "840e124f89a5127e7eb97ebf377f4b8ca745c070",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "40a023f681befd9b2862a3c16fb306a38b359ae5",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "19184bd06f488af62924ff1747614a8cb284ad63",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "41b2ea7a6a11e2b1a7f2c29e1675a709a6b2b98d",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "68c125324b5e1d1d22805653735442923d896a1d",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "virt/kvm/kvm_main.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.9"
            },
            {
              "lessThan": "5.9",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.37",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.11.*",
              "status": "unaffected",
              "version": "5.11.21",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.12.*",
              "status": "unaffected",
              "version": "5.12.4",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "5.13",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.10.37",
                  "versionStartIncluding": "5.9",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.11.21",
                  "versionStartIncluding": "5.9",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.12.4",
                  "versionStartIncluding": "5.9",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.13",
                  "versionStartIncluding": "5.9",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionStartIncluding": "4.4.238",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionStartIncluding": "4.9.238",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionStartIncluding": "4.14.200",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionStartIncluding": "4.19.148",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionStartIncluding": "5.4.66",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionStartIncluding": "5.8.10",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nKVM: Destroy I/O bus devices on unregister failure _after_ sync\u0027ing SRCU\n\nIf allocating a new instance of an I/O bus fails when unregistering a\ndevice, wait to destroy the device until after all readers are guaranteed\nto see the new null bus.  Destroying devices before the bus is nullified\ncould lead to use-after-free since readers expect the devices on their\nreference of the bus to remain valid."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-05-04T12:41:01.255Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/03c6cccedd3913006744faa252a4da5145299343"
        },
        {
          "url": "https://git.kernel.org/stable/c/4e899ca848636b37e9ac124bc1723862a7d7d927"
        },
        {
          "url": "https://git.kernel.org/stable/c/30f46c6993731efb2a690c9197c0fd9ed425da2d"
        },
        {
          "url": "https://git.kernel.org/stable/c/2ee3757424be7c1cd1d0bbfa6db29a7edd82a250"
        }
      ],
      "title": "KVM: Destroy I/O bus devices on unregister failure _after_ sync\u0027ing SRCU",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2021-47061",
    "datePublished": "2024-02-29T22:37:35.689Z",
    "dateReserved": "2024-02-29T22:33:44.294Z",
    "dateUpdated": "2025-05-04T12:41:01.255Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

Sightings

Author	Source	Type	Date

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.

Action not permitted

GHSA-WPX2-5M9Q-J3G7

CVE-2021-47061 (GCVE-0-2021-47061)

Tags

Sightings

Nomenclature