CVE-2021-47061
Vulnerability from cvelistv5
Published
2024-02-29 22:37
Modified
2024-11-04 11:58
Severity ?
Summary
KVM: Destroy I/O bus devices on unregister failure _after_ sync'ing SRCU
Impacted products
LinuxLinux
LinuxLinux
Show details on NVD website


{
  "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": "03c6cccedd39",
              "status": "affected",
              "version": "f65886606c2d",
              "versionType": "git"
            },
            {
              "lessThan": "4e899ca84863",
              "status": "affected",
              "version": "f65886606c2d",
              "versionType": "git"
            },
            {
              "lessThan": "30f46c699373",
              "status": "affected",
              "version": "f65886606c2d",
              "versionType": "git"
            },
            {
              "lessThan": "2ee3757424be",
              "status": "affected",
              "version": "f65886606c2d",
              "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"
            }
          ]
        }
      ],
      "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": "2024-11-04T11:58:40.742Z",
        "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-9e1c9544281a"
      }
    }
  },
  "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": "2024-11-04T11:58:40.742Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2021-47061\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2024-02-29T23:15:07.793\",\"lastModified\":\"2024-03-01T14:04:26.010\",\"vulnStatus\":\"Awaiting Analysis\",\"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.\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: KVM: Destruye los dispositivos del bus de E/S al cancelar el registro _despu\u00e9s_ de sincronizar SRCU Si falla la asignaci\u00f3n de una nueva instancia de un bus de E/S al cancelar el registro de un dispositivo, espere para destruir el dispositivo hasta que todos los lectores tengan la garant\u00eda de ver el nuevo bus nulo. Destruir dispositivos antes de que se anule el bus podr\u00eda dar lugar a un uso posterior a la liberaci\u00f3n, ya que los lectores esperan que los dispositivos en su referencia del bus sigan siendo v\u00e1lidos.\"}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/03c6cccedd3913006744faa252a4da5145299343\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/2ee3757424be7c1cd1d0bbfa6db29a7edd82a250\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/30f46c6993731efb2a690c9197c0fd9ed425da2d\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/4e899ca848636b37e9ac124bc1723862a7d7d927\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
  }
}


Log in or create an account to share your comment.




Tags
Taxonomy of the tags.


Loading...

Loading...

Loading...

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.