CVE-2021-4203 (GCVE-0-2021-4203)

Vulnerability from cvelistv5 – Published: 2022-03-25 00:00 – Updated: 2024-08-03 17:16
VLAI
Summary
A use-after-free read flaw was found in sock_getsockopt() in net/core/sock.c due to SO_PEERCRED and SO_PEERGROUPS race with listen() (and connect()) in the Linux kernel. In this flaw, an attacker with a user privileges may crash the system or leak internal kernel information.
Severity
6.8 (Medium)
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:H
CWE
Assigner
References
Impacted products
Vendor Product Version
n/a kernel Affected: kernel 5.15 rc4
Show details on NVD website
To clipboard 

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-03T17:16:04.262Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2036934"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://bugs.chromium.org/p/project-zero/issues/detail?id=2230\u0026can=7\u0026q=modified-after%3Atoday-30\u0026sort=-modified\u0026colspec=ID%20Type%20Status%20Priority%20Milestone%20Owner%20Summary%20Modified%20Cve\u0026cells=tiles\u0026redir=1"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://git.kernel.org/pub/scm/linux/kernel/git/netdev/net.git/commit/?id=35306eb23814"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://lore.kernel.org/netdev/20210929225750.2548112-1-eric.dumazet%40gmail.com/T/"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://www.oracle.com/security-alerts/cpujul2022.html"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://security.netapp.com/advisory/ntap-20221111-0003/"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "kernel",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "kernel 5.15 rc4"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "A use-after-free read flaw was found in sock_getsockopt() in net/core/sock.c due to SO_PEERCRED and SO_PEERGROUPS race with listen() (and connect()) in the Linux kernel. In this flaw, an attacker with a user privileges may crash the system or leak internal kernel information."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-362",
              "description": "CWE-362-\u003eCWE-416",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2022-11-14T00:00:00.000Z",
        "orgId": "53f830b8-0a3f-465b-8143-3b8a9948e749",
        "shortName": "redhat"
      },
      "references": [
        {
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2036934"
        },
        {
          "url": "https://bugs.chromium.org/p/project-zero/issues/detail?id=2230\u0026can=7\u0026q=modified-after%3Atoday-30\u0026sort=-modified\u0026colspec=ID%20Type%20Status%20Priority%20Milestone%20Owner%20Summary%20Modified%20Cve\u0026cells=tiles\u0026redir=1"
        },
        {
          "url": "https://git.kernel.org/pub/scm/linux/kernel/git/netdev/net.git/commit/?id=35306eb23814"
        },
        {
          "url": "https://lore.kernel.org/netdev/20210929225750.2548112-1-eric.dumazet%40gmail.com/T/"
        },
        {
          "url": "https://www.oracle.com/security-alerts/cpujul2022.html"
        },
        {
          "url": "https://security.netapp.com/advisory/ntap-20221111-0003/"
        }
      ]
    }
  },
  "cveMetadata": {
    "assignerOrgId": "53f830b8-0a3f-465b-8143-3b8a9948e749",
    "assignerShortName": "redhat",
    "cveId": "CVE-2021-4203",
    "datePublished": "2022-03-25T00:00:00.000Z",
    "dateReserved": "2022-01-10T00:00:00.000Z",
    "dateUpdated": "2024-08-03T17:16:04.262Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2021-4203",
      "date": "2026-06-02",
      "epss": "0.00092",
      "percentile": "0.25932"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2021-4203\",\"sourceIdentifier\":\"secalert@redhat.com\",\"published\":\"2022-03-25T19:15:09.833\",\"lastModified\":\"2024-11-21T06:37:08.430\",\"vulnStatus\":\"Modified\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"A use-after-free read flaw was found in sock_getsockopt() in net/core/sock.c due to SO_PEERCRED and SO_PEERGROUPS race with listen() (and connect()) in the Linux kernel. In this flaw, an attacker with a user privileges may crash the system or leak internal kernel information.\"},{\"lang\":\"es\",\"value\":\"Se ha encontrado un fallo de lectura de uso de memoria previamente liberada en la funci\u00f3n sock_getsockopt() en el archivo net/core/sock.c debido a la carrera de SO_PEERCRED y SO_PEERGROUPS con listen() (y connect()) en el kernel de Linux. En este fallo, un atacante con privilegios de usuario puede bloquear el sistema o filtrar informaci\u00f3n interna del kernel\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:H\",\"baseScore\":6.8,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"HIGH\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.6,\"impactScore\":5.2}],\"cvssMetricV2\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"2.0\",\"vectorString\":\"AV:N/AC:M/Au:S/C:P/I:N/A:P\",\"baseScore\":4.9,\"accessVector\":\"NETWORK\",\"accessComplexity\":\"MEDIUM\",\"authentication\":\"SINGLE\",\"confidentialityImpact\":\"PARTIAL\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"PARTIAL\"},\"baseSeverity\":\"MEDIUM\",\"exploitabilityScore\":6.8,\"impactScore\":4.9,\"acInsufInfo\":false,\"obtainAllPrivilege\":false,\"obtainUserPrivilege\":false,\"obtainOtherPrivilege\":false,\"userInteractionRequired\":false}]},\"weaknesses\":[{\"source\":\"secalert@redhat.com\",\"type\":\"Secondary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-362\"}]},{\"source\":\"nvd@nist.gov\",\"type\":\"Secondary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-362\"},{\"lang\":\"en\",\"value\":\"CWE-416\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionEndExcluding\":\"5.15\",\"matchCriteriaId\":\"037A6DFB-B41D-4CC7-86C1-A201809B79C4\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:5.15:-:*:*:*:*:*:*\",\"matchCriteriaId\":\"40D9C0D1-0F32-4A2B-9840-1072F5497540\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:5.15:rc1:*:*:*:*:*:*\",\"matchCriteriaId\":\"E46C74C6-B76B-4C94-A6A4-FD2FFF62D644\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:5.15:rc2:*:*:*:*:*:*\",\"matchCriteriaId\":\"60134C3A-06E4-48C1-B04F-2903732A4E56\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:5.15:rc3:*:*:*:*:*:*\",\"matchCriteriaId\":\"0460DA88-8FE1-46A2-9DDA-1F1ABA552E71\"}]}]},{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:netapp:active_iq_unified_manager:-:*:*:*:*:vmware_vsphere:*:*\",\"matchCriteriaId\":\"3A756737-1CC4-42C2-A4DF-E1C893B4E2D5\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:netapp:e-series_santricity_os_controller:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"11.0.0\",\"versionEndIncluding\":\"11.70.2\",\"matchCriteriaId\":\"8C5DA53D-744B-4087-AEA9-257F18949E4D\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:netapp:element_software:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"85DF4B3F-4BBC-42B7-B729-096934523D63\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:netapp:hci_management_node:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"A3C19813-E823-456A-B1CE-EC0684CE1953\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:netapp:solidfire:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"A6E9EF0C-AFA8-4F7B-9FDC-1E0F7C26E737\"}]}]},{\"operator\":\"AND\",\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:netapp:bootstrap_os:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"95BA156C-C977-4F0C-8DFB-3FAE9CC8C02D\"}]},{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":false,\"criteria\":\"cpe:2.3:h:netapp:hci_compute_node:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"AD7447BC-F315-4298-A822-549942FC118B\"}]}]},{\"operator\":\"AND\",\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:netapp:a700s_firmware:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"FDD92BFA-9117-4E6E-A13F-ED064B4B7284\"}]},{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":false,\"criteria\":\"cpe:2.3:h:netapp:a700s:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"4B7DA42F-5D64-4967-A2D4-6210FE507841\"}]}]},{\"operator\":\"AND\",\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:netapp:h300s_firmware:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"6770B6C3-732E-4E22-BF1C-2D2FD610061C\"}]},{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":false,\"criteria\":\"cpe:2.3:h:netapp:h300s:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"9F9C8C20-42EB-4AB5-BD97-212DEB070C43\"}]}]},{\"operator\":\"AND\",\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:netapp:h500s_firmware:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"7FFF7106-ED78-49BA-9EC5-B889E3685D53\"}]},{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":false,\"criteria\":\"cpe:2.3:h:netapp:h500s:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"E63D8B0F-006E-4801-BF9D-1C001BBFB4F9\"}]}]},{\"operator\":\"AND\",\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:netapp:h700s_firmware:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"56409CEC-5A1E-4450-AA42-641E459CC2AF\"}]},{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":false,\"criteria\":\"cpe:2.3:h:netapp:h700s:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"B06F4839-D16A-4A61-9BB5-55B13F41E47F\"}]}]},{\"operator\":\"AND\",\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:netapp:h410s_firmware:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"D0B4AD8A-F172-4558-AEC6-FF424BA2D912\"}]},{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":false,\"criteria\":\"cpe:2.3:h:netapp:h410s:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"8497A4C9-8474-4A62-8331-3FE862ED4098\"}]}]},{\"operator\":\"AND\",\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:netapp:h410c_firmware:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"234DEFE0-5CE5-4B0A-96B8-5D227CB8ED31\"}]},{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":false,\"criteria\":\"cpe:2.3:h:netapp:h410c:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"CDDF61B7-EC5C-467C-B710-B89F502CD04F\"}]}]},{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:oracle:communications_cloud_native_core_binding_support_function:22.1.3:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"6EDB6772-7FDB-45FF-8D72-952902A7EE56\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:oracle:communications_cloud_native_core_network_exposure_function:22.1.1:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"9955F62A-75D3-4347-9AD3-5947FC365838\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:oracle:communications_cloud_native_core_policy:22.2.0:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"7A6D77C7-A2F4-4700-AB5A-3EC853496ECA\"}]}]}],\"references\":[{\"url\":\"https://bugs.chromium.org/p/project-zero/issues/detail?id=2230\u0026can=7\u0026q=modified-after%3Atoday-30\u0026sort=-modified\u0026colspec=ID%20Type%20Status%20Priority%20Milestone%20Owner%20Summary%20Modified%20Cve\u0026cells=tiles\u0026redir=1\",\"source\":\"secalert@redhat.com\",\"tags\":[\"Exploit\",\"Issue Tracking\",\"Patch\",\"Third Party Advisory\"]},{\"url\":\"https://bugzilla.redhat.com/show_bug.cgi?id=2036934\",\"source\":\"secalert@redhat.com\",\"tags\":[\"Issue Tracking\",\"Patch\",\"Third Party Advisory\"]},{\"url\":\"https://git.kernel.org/pub/scm/linux/kernel/git/netdev/net.git/commit/?id=35306eb23814\",\"source\":\"secalert@redhat.com\",\"tags\":[\"Patch\",\"Vendor Advisory\"]},{\"url\":\"https://lore.kernel.org/netdev/20210929225750.2548112-1-eric.dumazet%40gmail.com/T/\",\"source\":\"secalert@redhat.com\"},{\"url\":\"https://security.netapp.com/advisory/ntap-20221111-0003/\",\"source\":\"secalert@redhat.com\",\"tags\":[\"Third Party Advisory\"]},{\"url\":\"https://www.oracle.com/security-alerts/cpujul2022.html\",\"source\":\"secalert@redhat.com\",\"tags\":[\"Patch\",\"Third Party Advisory\"]},{\"url\":\"https://bugs.chromium.org/p/project-zero/issues/detail?id=2230\u0026can=7\u0026q=modified-after%3Atoday-30\u0026sort=-modified\u0026colspec=ID%20Type%20Status%20Priority%20Milestone%20Owner%20Summary%20Modified%20Cve\u0026cells=tiles\u0026redir=1\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Exploit\",\"Issue Tracking\",\"Patch\",\"Third Party Advisory\"]},{\"url\":\"https://bugzilla.redhat.com/show_bug.cgi?id=2036934\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Issue Tracking\",\"Patch\",\"Third Party Advisory\"]},{\"url\":\"https://git.kernel.org/pub/scm/linux/kernel/git/netdev/net.git/commit/?id=35306eb23814\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\",\"Vendor Advisory\"]},{\"url\":\"https://lore.kernel.org/netdev/20210929225750.2548112-1-eric.dumazet%40gmail.com/T/\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"https://security.netapp.com/advisory/ntap-20221111-0003/\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Third Party Advisory\"]},{\"url\":\"https://www.oracle.com/security-alerts/cpujul2022.html\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\",\"Third Party Advisory\"]}]}}"
  }
}


Log in or create an account to share your comment.




Tags
Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

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.