{
  "document": {
    "aggregate_severity": {
      "text": "Medium"
    },
    "category": "csaf_vex",
    "csaf_version": "2.0",
    "distribution": {
      "text": "TuxCare License Agreement",
      "tlp": {
        "label": "WHITE",
        "url": "https://www.first.org/tlp/"
      }
    },
    "lang": "en",
    "notes": [
      {
        "category": "legal_disclaimer",
        "text": "This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Cloud Linux Inc. and provide a link to the original.",
        "title": "Terms of Use"
      }
    ],
    "publisher": {
      "category": "vendor",
      "contact_details": "https://tuxcare.com/contact/",
      "name": "TuxCare",
      "namespace": "https://tuxcare.com/"
    },
    "references": [
      {
        "category": "self",
        "summary": "Canonical URL",
        "url": "https://security.tuxcare.com/csaf/v2/els_os/centos-stream8els/vex/2021/cve-2021-33120-els_os-centos-stream8els.json"
      }
    ],
    "tracking": {
      "current_release_date": "2026-06-04T20:39:29Z",
      "generator": {
        "date": "2026-06-04T20:39:29Z",
        "engine": {
          "name": "pyCSAF"
        }
      },
      "id": "CVE-2021-33120-ELS_OS-CENTOS-STREAM8ELS",
      "initial_release_date": "2021-01-01T00:00:00Z",
      "revision_history": [
        {
          "date": "2021-01-01T00:00:00Z",
          "number": "1",
          "summary": "Initial version"
        },
        {
          "date": "2026-06-04T20:39:29Z",
          "number": "2",
          "summary": "Official Publication"
        }
      ],
      "status": "final",
      "version": "2"
    },
    "title": "Security update on CVE-2021-33120"
  },
  "product_tree": {
    "branches": [
      {
        "branches": [
          {
            "branches": [
              {
                "category": "product_name",
                "name": "Community Enterprise Operating System 8",
                "product": {
                  "name": "Community Enterprise Operating System 8",
                  "product_id": "CentOS-Stream-8",
                  "product_identification_helper": {
                    "cpe": "cpe:2.3:o:centos:centos:8:*:*:*:*:*:*:*"
                  }
                }
              }
            ],
            "category": "product_family",
            "name": "Community Enterprise Operating System"
          }
        ],
        "category": "vendor",
        "name": "Red Hat, Inc."
      },
      {
        "branches": [
          {
            "branches": [
              {
                "category": "product_version",
                "name": "microcode_ctl-4:20240910-2.el8.tuxcare.els1.x86_64",
                "product": {
                  "name": "microcode_ctl-4:20240910-2.el8.tuxcare.els1.x86_64",
                  "product_id": "microcode_ctl-4:20240910-2.el8.tuxcare.els1.x86_64",
                  "product_identification_helper": {
                    "purl": "pkg:rpm/tuxcare/microcode_ctl@20240910-2.el8.tuxcare.els1?arch=x86_64&epoch=4"
                  }
                }
              },
              {
                "category": "product_version",
                "name": "microcode_ctl-4:20250211-2.el8.tuxcare.els1.x86_64",
                "product": {
                  "name": "microcode_ctl-4:20250211-2.el8.tuxcare.els1.x86_64",
                  "product_id": "microcode_ctl-4:20250211-2.el8.tuxcare.els1.x86_64",
                  "product_identification_helper": {
                    "purl": "pkg:rpm/tuxcare/microcode_ctl@20250211-2.el8.tuxcare.els1?arch=x86_64&epoch=4"
                  }
                }
              },
              {
                "category": "product_version",
                "name": "microcode_ctl-4:20251111-2.el8.tuxcare.els1.x86_64",
                "product": {
                  "name": "microcode_ctl-4:20251111-2.el8.tuxcare.els1.x86_64",
                  "product_id": "microcode_ctl-4:20251111-2.el8.tuxcare.els1.x86_64",
                  "product_identification_helper": {
                    "purl": "pkg:rpm/tuxcare/microcode_ctl@20251111-2.el8.tuxcare.els1?arch=x86_64&epoch=4"
                  }
                }
              },
              {
                "category": "product_version",
                "name": "microcode_ctl-4:20250512-2.el8.tuxcare.els1.x86_64",
                "product": {
                  "name": "microcode_ctl-4:20250512-2.el8.tuxcare.els1.x86_64",
                  "product_id": "microcode_ctl-4:20250512-2.el8.tuxcare.els1.x86_64",
                  "product_identification_helper": {
                    "purl": "pkg:rpm/tuxcare/microcode_ctl@20250512-2.el8.tuxcare.els1?arch=x86_64&epoch=4"
                  }
                }
              }
            ],
            "category": "architecture",
            "name": "x86_64"
          }
        ],
        "category": "vendor",
        "name": "TuxCare"
      }
    ],
    "relationships": [
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "microcode_ctl-4:20240910-2.el8.tuxcare.els1.x86_64 as a component of Community Enterprise Operating System 8",
          "product_id": "CentOS-Stream-8:microcode_ctl-4:20240910-2.el8.tuxcare.els1.x86_64"
        },
        "product_reference": "microcode_ctl-4:20240910-2.el8.tuxcare.els1.x86_64",
        "relates_to_product_reference": "CentOS-Stream-8"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "microcode_ctl-4:20250211-2.el8.tuxcare.els1.x86_64 as a component of Community Enterprise Operating System 8",
          "product_id": "CentOS-Stream-8:microcode_ctl-4:20250211-2.el8.tuxcare.els1.x86_64"
        },
        "product_reference": "microcode_ctl-4:20250211-2.el8.tuxcare.els1.x86_64",
        "relates_to_product_reference": "CentOS-Stream-8"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "microcode_ctl-4:20251111-2.el8.tuxcare.els1.x86_64 as a component of Community Enterprise Operating System 8",
          "product_id": "CentOS-Stream-8:microcode_ctl-4:20251111-2.el8.tuxcare.els1.x86_64"
        },
        "product_reference": "microcode_ctl-4:20251111-2.el8.tuxcare.els1.x86_64",
        "relates_to_product_reference": "CentOS-Stream-8"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "microcode_ctl-4:20250512-2.el8.tuxcare.els1.x86_64 as a component of Community Enterprise Operating System 8",
          "product_id": "CentOS-Stream-8:microcode_ctl-4:20250512-2.el8.tuxcare.els1.x86_64"
        },
        "product_reference": "microcode_ctl-4:20250512-2.el8.tuxcare.els1.x86_64",
        "relates_to_product_reference": "CentOS-Stream-8"
      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2021-33120",
      "cwe": {
        "id": "CWE-125",
        "name": "Out-of-bounds Read"
      },
      "notes": [
        {
          "category": "description",
          "text": "Out of bounds read under complex microarchitectural condition in memory subsystem for some Intel Atom(R) Processors may allow authenticated user to potentially enable information disclosure or cause denial of service via network access.",
          "title": "Vulnerability description"
        },
        {
          "category": "general",
          "text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.",
          "title": "CVSS score applicability"
        }
      ],
      "product_status": {
        "under_investigation": [
          "CentOS-Stream-8:microcode_ctl-4:20240910-2.el8.tuxcare.els1.x86_64",
          "CentOS-Stream-8:microcode_ctl-4:20250211-2.el8.tuxcare.els1.x86_64",
          "CentOS-Stream-8:microcode_ctl-4:20250512-2.el8.tuxcare.els1.x86_64",
          "CentOS-Stream-8:microcode_ctl-4:20251111-2.el8.tuxcare.els1.x86_64"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://cve.tuxcare.com/els/cve/CVE-2021-33120"
        },
        {
          "category": "external",
          "summary": "https://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00589.html",
          "url": "https://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00589.html"
        }
      ],
      "release_date": "2022-02-09T23:15:00Z",
      "remediations": [
        {
          "category": "none_available",
          "date": "2026-06-04T20:26:56.257007Z",
          "details": "Affected",
          "product_ids": [
            "CentOS-Stream-8:microcode_ctl-4:20240910-2.el8.tuxcare.els1.x86_64",
            "CentOS-Stream-8:microcode_ctl-4:20250211-2.el8.tuxcare.els1.x86_64",
            "CentOS-Stream-8:microcode_ctl-4:20250512-2.el8.tuxcare.els1.x86_64",
            "CentOS-Stream-8:microcode_ctl-4:20251111-2.el8.tuxcare.els1.x86_64"
          ]
        }
      ],
      "scores": [
        {
          "cvss_v2": {
            "accessComplexity": "LOW",
            "accessVector": "NETWORK",
            "authentication": "SINGLE",
            "availabilityImpact": "PARTIAL",
            "baseScore": 5.5,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "PARTIAL",
            "integrityImpact": "NONE",
            "vectorString": "AV:N/AC:L/Au:S/C:P/I:N/A:P",
            "version": "2.0"
          },
          "cvss_v3": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "LOW",
            "baseScore": 5.4,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "LOW",
            "integrityImpact": "NONE",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:L",
            "version": "3.1"
          },
          "products": [
            "CentOS-Stream-8:microcode_ctl-4:20240910-2.el8.tuxcare.els1.x86_64",
            "CentOS-Stream-8:microcode_ctl-4:20250211-2.el8.tuxcare.els1.x86_64",
            "CentOS-Stream-8:microcode_ctl-4:20250512-2.el8.tuxcare.els1.x86_64",
            "CentOS-Stream-8:microcode_ctl-4:20251111-2.el8.tuxcare.els1.x86_64"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Moderate"
        }
      ]
    }
  ]
}