Red Hat Security Advisory: microcode_ctl security, bug fix, and enhancement update

{
  "id": "d18075f8da96ca5c19c52548021e840a8965f6cd8fae2b03133b774b362386ba",
  "url": "https://osv.dev/vulnerability/RHSA-2026%3A67979",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Red Hat Security Advisory: microcode_ctl security, bug fix, and enhancement update",
    "summary": "Red Hat Security Advisory: microcode_ctl security, bug fix, and enhancement update",
    "evidence": "osv:RHSA-2026:67979",
    "products": [
      {
        "name": {
          "value": "microcode_ctl",
          "evidence": "/affected/0/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "4:20260812-0.el10_2",
            "evidence": "/affected/0/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "high",
    "structured": {
      "id": "RHSA-2026:67979",
      "aliases": [
        "RHSA-2026:67979"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "4:20260812-0.el10_2"
                }
              ]
            }
          ],
          "package": {
            "name": "microcode_ctl",
            "purl": "pkg:rpm/redhat/microcode_ctl",
            "ecosystem": "Red Hat:enterprise_linux:10.2"
          },
          "database_specific": {
            "source": "https://security.access.redhat.com/data/osv/RHSA-2026:67979.json"
          }
        }
      ],
      "modified": "2026-10-14T10:27:52Z",
      "provider": "osv",
      "upstream": [
        "CVE-2025-31936",
        "CVE-2025-35973"
      ],
      "references": [
        "https://access.redhat.com/errata/RHSA-2026:67979",
        "https://access.redhat.com/security/updates/classification/#important",
        "https://bugzilla.redhat.com/show_bug.cgi?id=2514104",
        "https://bugzilla.redhat.com/show_bug.cgi?id=2514115",
        "https://issues.redhat.com/browse/RHEL-260582",
        "https://security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_67979.json",
        "https://access.redhat.com/security/cve/CVE-2025-31936",
        "https://www.cve.org/CVERecord?id=CVE-2025-31936",
        "https://nvd.nist.gov/vuln/detail/CVE-2025-31936",
        "https://intel.com/content/www/us/en/security-center/advisory/intel-sa-01379.html",
        "https://access.redhat.com/security/cve/CVE-2025-35973",
        "https://www.cve.org/CVERecord?id=CVE-2025-35973",
        "https://nvd.nist.gov/vuln/detail/CVE-2025-35973",
        "https://intel.com/content/www/us/en/security-center/advisory/intel-sa-01428.html"
      ]
    },
    "related_cves": [
      {
        "value": "CVE-2025-31936",
        "evidence": "/upstream"
      },
      {
        "value": "CVE-2025-35973",
        "evidence": "/upstream"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 315999,
  "published_at": "2026-09-17T10:18:11+00:00"
}