{
  "document": {
    "aggregate_severity": {
      "text": "High"
    },
    "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/cloudlinux7els/vex/2023/cve-2023-31315-els_os-cloudlinux7els.json"
      }
    ],
    "tracking": {
      "current_release_date": "2026-06-12T22:12:17Z",
      "generator": {
        "date": "2026-06-12T22:12:17Z",
        "engine": {
          "name": "pyCSAF"
        }
      },
      "id": "CVE-2023-31315-ELS_OS-CLOUDLINUX7ELS",
      "initial_release_date": "2023-01-01T00:00:00Z",
      "revision_history": [
        {
          "date": "2023-01-01T00:00:00Z",
          "number": "1",
          "summary": "Initial version"
        },
        {
          "date": "2025-11-29T10:33:15Z",
          "number": "2",
          "summary": "Official Publication"
        },
        {
          "date": "2025-12-23T22:15:38Z",
          "number": "3",
          "summary": "Update document"
        },
        {
          "date": "2026-06-12T22:12:17Z",
          "number": "4",
          "summary": "Update document"
        }
      ],
      "status": "final",
      "version": "4"
    },
    "title": "Security update on CVE-2023-31315"
  },
  "product_tree": {
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      {
        "branches": [
          {
            "branches": [
              {
                "category": "product_name",
                "name": "CloudLinux 7",
                "product": {
                  "name": "CloudLinux 7",
                  "product_id": "CloudLinux-7",
                  "product_identification_helper": {
                    "cpe": "cpe:2.3:o:cloudlinux:cloudlinux:7:*:*:*:*:*:*:*"
                  }
                }
              }
            ],
            "category": "product_family",
            "name": "CloudLinux"
          }
        ],
        "category": "vendor",
        "name": "Cloud Linux Software, Inc."
      },
      {
        "branches": [
          {
            "branches": [
              {
                "category": "product_version",
                "name": "microcode_ctl-2:2.1-73.22.el7_9.tuxcare.els1.x86_64",
                "product": {
                  "name": "microcode_ctl-2:2.1-73.22.el7_9.tuxcare.els1.x86_64",
                  "product_id": "microcode_ctl-2:2.1-73.22.el7_9.tuxcare.els1.x86_64",
                  "product_identification_helper": {
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                  }
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              {
                "category": "product_version",
                "name": "microcode_ctl-2:2.1-73.25.el7_9.tuxcare.els1.x86_64",
                "product": {
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                  "product_id": "microcode_ctl-2:2.1-73.25.el7_9.tuxcare.els1.x86_64",
                  "product_identification_helper": {
                    "purl": "pkg:rpm/cloudlinux/microcode_ctl@2.1-73.25.el7_9.tuxcare.els1?arch=x86_64&epoch=2"
                  }
                }
              },
              {
                "category": "product_version",
                "name": "microcode_ctl-2:2.1-73.21.el7_9.tuxcare.els1.x86_64",
                "product": {
                  "name": "microcode_ctl-2:2.1-73.21.el7_9.tuxcare.els1.x86_64",
                  "product_id": "microcode_ctl-2:2.1-73.21.el7_9.tuxcare.els1.x86_64",
                  "product_identification_helper": {
                    "purl": "pkg:rpm/cloudlinux/microcode_ctl@2.1-73.21.el7_9.tuxcare.els1?arch=x86_64&epoch=2"
                  }
                }
              },
              {
                "category": "product_version",
                "name": "microcode_ctl-2:2.1-73.26.el7_9.tuxcare.els1.x86_64",
                "product": {
                  "name": "microcode_ctl-2:2.1-73.26.el7_9.tuxcare.els1.x86_64",
                  "product_id": "microcode_ctl-2:2.1-73.26.el7_9.tuxcare.els1.x86_64",
                  "product_identification_helper": {
                    "purl": "pkg:rpm/cloudlinux/microcode_ctl@2.1-73.26.el7_9.tuxcare.els1?arch=x86_64&epoch=2"
                  }
                }
              }
            ],
            "category": "architecture",
            "name": "x86_64"
          }
        ],
        "category": "vendor",
        "name": "CloudLinux"
      }
    ],
    "relationships": [
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "microcode_ctl-2:2.1-73.22.el7_9.tuxcare.els1.x86_64 as a component of CloudLinux 7",
          "product_id": "CloudLinux-7:microcode_ctl-2:2.1-73.22.el7_9.tuxcare.els1.x86_64"
        },
        "product_reference": "microcode_ctl-2:2.1-73.22.el7_9.tuxcare.els1.x86_64",
        "relates_to_product_reference": "CloudLinux-7"
      },
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        "full_product_name": {
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          "product_id": "CloudLinux-7:microcode_ctl-2:2.1-73.25.el7_9.tuxcare.els1.x86_64"
        },
        "product_reference": "microcode_ctl-2:2.1-73.25.el7_9.tuxcare.els1.x86_64",
        "relates_to_product_reference": "CloudLinux-7"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "microcode_ctl-2:2.1-73.21.el7_9.tuxcare.els1.x86_64 as a component of CloudLinux 7",
          "product_id": "CloudLinux-7:microcode_ctl-2:2.1-73.21.el7_9.tuxcare.els1.x86_64"
        },
        "product_reference": "microcode_ctl-2:2.1-73.21.el7_9.tuxcare.els1.x86_64",
        "relates_to_product_reference": "CloudLinux-7"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "microcode_ctl-2:2.1-73.26.el7_9.tuxcare.els1.x86_64 as a component of CloudLinux 7",
          "product_id": "CloudLinux-7:microcode_ctl-2:2.1-73.26.el7_9.tuxcare.els1.x86_64"
        },
        "product_reference": "microcode_ctl-2:2.1-73.26.el7_9.tuxcare.els1.x86_64",
        "relates_to_product_reference": "CloudLinux-7"
      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2023-31315",
      "notes": [
        {
          "category": "description",
          "text": "Improper validation in a model specific register (MSR) could allow a malicious program with ring0 access to modify SMM configuration while SMI lock is enabled, potentially leading to arbitrary code execution.",
          "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"
        },
        {
          "category": "other",
          "text": "TuxCare has assessed that this vulnerability does not impact any currently supported TuxCare products. This evaluation may change as new information becomes available. For additional details regarding this vulnerability and affected products, refer to the provided references.",
          "title": "Statement"
        }
      ],
      "product_status": {
        "known_not_affected": [
          "CloudLinux-7:microcode_ctl-2:2.1-73.21.el7_9.tuxcare.els1.x86_64",
          "CloudLinux-7:microcode_ctl-2:2.1-73.22.el7_9.tuxcare.els1.x86_64",
          "CloudLinux-7:microcode_ctl-2:2.1-73.25.el7_9.tuxcare.els1.x86_64",
          "CloudLinux-7:microcode_ctl-2:2.1-73.26.el7_9.tuxcare.els1.x86_64"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://cve.tuxcare.com/els/cve/CVE-2023-31315"
        }
      ],
      "release_date": "2024-08-09T00:00:00Z",
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "HIGH",
            "attackVector": "LOCAL",
            "availabilityImpact": "HIGH",
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "HIGH",
            "scope": "CHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H",
            "version": "3.1"
          },
          "products": [
            "CloudLinux-7:microcode_ctl-2:2.1-73.21.el7_9.tuxcare.els1.x86_64",
            "CloudLinux-7:microcode_ctl-2:2.1-73.22.el7_9.tuxcare.els1.x86_64",
            "CloudLinux-7:microcode_ctl-2:2.1-73.25.el7_9.tuxcare.els1.x86_64",
            "CloudLinux-7:microcode_ctl-2:2.1-73.26.el7_9.tuxcare.els1.x86_64"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Important"
        },
        {
          "category": "impact",
          "date": "2026-06-12T13:03:59.134949Z",
          "details": "Not vulnerable: CVE-2023-31315 is a hardware/firmware flaw limited to AMD CPUs, and the required mitigations are delivered as AMD microcode/PI firmware updates. In Linux distributions, AMD CPU microcode is shipped via the linux-firmware channel, while microcode_ctl 2.1 provides Intel microcode and does not contain or manage the AMD updates implicated by this issue. As a result, the vulnerable code path is not present in the microcode_ctl package.",
          "product_ids": [
            "CloudLinux-7:microcode_ctl-2:2.1-73.21.el7_9.tuxcare.els1.x86_64",
            "CloudLinux-7:microcode_ctl-2:2.1-73.22.el7_9.tuxcare.els1.x86_64",
            "CloudLinux-7:microcode_ctl-2:2.1-73.25.el7_9.tuxcare.els1.x86_64",
            "CloudLinux-7:microcode_ctl-2:2.1-73.26.el7_9.tuxcare.els1.x86_64"
          ]
        }
      ]
    }
  ]
}