{
  "schemaVersion": 1,
  "attribution": [
    {
      "source": "CISA Known Exploited Vulnerabilities",
      "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog",
      "licence": "US government work"
    },
    {
      "source": "GitHub Advisory Database",
      "url": "https://github.com/advisories",
      "licence": "CC BY 4.0"
    },
    {
      "source": "Have I Been Pwned",
      "url": "https://haveibeenpwned.com/",
      "licence": "CC BY 4.0"
    },
    {
      "source": "CVE Program (CVE records)",
      "url": "https://www.cve.org/Legal/TermsOfUse",
      "licence": "CVE Terms of Use",
      "notice": "Copyright © 1999-2026, The MITRE Corporation. CVE is a trademark and the CVE logo is a registered trademark of The MITRE Corporation.",
      "terms": "CVE Usage: MITRE hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute Common Vulnerabilities and Exposures (CVE™). Any copy you make for such purposes is authorized provided that you reproduce MITRE's copyright designation and this license in any such copy."
    },
    {
      "source": "FIRST EPSS",
      "url": "https://www.first.org/epss/",
      "licence": "free to use; FIRST requests attribution"
    }
  ],
  "record": {
    "id": "CVE-2026-80921",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2026-80921",
    "idYear": 2026,
    "status": "PUBLISHED",
    "publishedAt": "2026-09-09T16:19:42.335Z",
    "updatedAt": "2026-10-19T08:45:04.791Z",
    "importedAt": "2026-10-24T01:58:30.346Z",
    "snapshot": {
      "id": "cve_2026-10-24_midnight_baseline",
      "at": "2026-10-24T00:00:00.000Z",
      "source": "https://github.com/CVEProject/cvelistV5/releases/tag/cve_2026-10-24_0100Z"
    },
    "facts": {
      "title": "KVM: s390: vsie: zero stale crypto bits",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nKVM: s390: vsie: zero stale crypto bits\n\nWhen shadowing crypto access bits from a format0 apcb (crycb 0 or 1),\nthe bits 64..255 are unchanged from whatever is in the vsie page in the\ncrycb and thus in the apcb. This gives a nested guest potential access\nto a device no longer available. Zero out the remaining bits.",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "6b79de4b056e5a2febc0c61233d8f0ad7868e49c",
              "status": "affected",
              "versionType": "git",
              "lessThan": "d110b3297f11ef227098b8a82ade2d5f123b7d2f"
            },
            {
              "version": "6b79de4b056e5a2febc0c61233d8f0ad7868e49c",
              "status": "affected",
              "versionType": "git",
              "lessThan": "59d51550b5cb916bda037673a721a404b3b47a0d"
            },
            {
              "version": "6b79de4b056e5a2febc0c61233d8f0ad7868e49c",
              "status": "affected",
              "versionType": "git",
              "lessThan": "f6079dca67eccb5eabef9f72437948c66dc5131f"
            },
            {
              "version": "6b79de4b056e5a2febc0c61233d8f0ad7868e49c",
              "status": "affected",
              "versionType": "git",
              "lessThan": "087c19cc60a8caa1a08e1e434c8be2caf6c27733"
            },
            {
              "version": "6b79de4b056e5a2febc0c61233d8f0ad7868e49c",
              "status": "affected",
              "versionType": "git",
              "lessThan": "7d23489f51109e3ebba5b5db8c5f0185af7b7fdf"
            },
            {
              "version": "6b79de4b056e5a2febc0c61233d8f0ad7868e49c",
              "status": "affected",
              "versionType": "git",
              "lessThan": "935eeba276012916c76243e5cbb843efd8fdb75d"
            },
            {
              "version": "6b79de4b056e5a2febc0c61233d8f0ad7868e49c",
              "status": "affected",
              "versionType": "git",
              "lessThan": "d4bcd2df6d0d2af916b4fe1a533958778ea7c45b"
            },
            {
              "version": "6b79de4b056e5a2febc0c61233d8f0ad7868e49c",
              "status": "affected",
              "versionType": "git",
              "lessThan": "29b4f7bc2991313bd3e6f6fb8fdf1b173f086dd6"
            },
            {
              "version": "6b79de4b056e5a2febc0c61233d8f0ad7868e49c",
              "status": "affected",
              "versionType": "git",
              "lessThan": "34d5b5b646c91cfb9338d7a12c955a70ffb8c66b"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "4.20",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "4.20"
            },
            {
              "version": "5.10.269",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.10.*"
            },
            {
              "version": "5.15.220",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.15.*"
            },
            {
              "version": "6.1.187",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.1.*"
            },
            {
              "version": "6.6.156",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.6.*"
            },
            {
              "version": "6.12.108",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.12.*"
            },
            {
              "version": "6.18.49",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.18.*"
            },
            {
              "version": "7.1.13",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "7.1.*"
            },
            {
              "version": "7.2.3",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "7.2.*"
            },
            {
              "version": "7.3",
              "status": "unaffected",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ]
        }
      ]
    }
  }
}