{
  "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-2026-74312",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2026-74312",
    "idYear": 2026,
    "status": "PUBLISHED",
    "publishedAt": "2026-08-15T05:58:11.395Z",
    "updatedAt": "2026-10-16T18:55:32.188Z",
    "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": "vhost/vdpa: validate virtqueue index in mmap and fault paths",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nvhost/vdpa: validate virtqueue index in mmap and fault paths\n\nvhost_vdpa_mmap() and vhost_vdpa_fault() use vma->vm_pgoff as a\nvirtqueue index for get_vq_notification(), but they do not validate\nthat the index is smaller than v->nvqs.\n\nThe ioctl path already performs both a bounds check and\narray_index_nospec(), but the mmap/fault path only checks that the\nindex fits in u16. This allows an out-of-range queue index to reach\ndriver-specific get_vq_notification() callbacks.\n\nFix this by extracting a unified vhost_vdpa_get_vq_notification()\nhelper that validates the queue index against v->nvqs and applies\narray_index_nospec() before calling the driver callback. Both the\nmmap and fault paths use this helper, and the bounds checking is\nconsolidated into a single location.\n\nFrom source inspection, the most defensible impact is out-of-bounds\naccess in the callback path, potentially leading to invalid PFN\nremaps and crash/DoS.",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "ddd89d0a059d8e9740c75a97e0efe9bf07ee51f9",
              "status": "affected",
              "versionType": "git",
              "lessThan": "0f310bac6db9bd3bb1655707d692d9d2a86eeb17"
            },
            {
              "version": "ddd89d0a059d8e9740c75a97e0efe9bf07ee51f9",
              "status": "affected",
              "versionType": "git",
              "lessThan": "4bf5a51963ff816f7443702dc536b9327cf5e550"
            },
            {
              "version": "ddd89d0a059d8e9740c75a97e0efe9bf07ee51f9",
              "status": "affected",
              "versionType": "git",
              "lessThan": "55a644031e610ea93fbde2702c7b8f267476552f"
            },
            {
              "version": "ddd89d0a059d8e9740c75a97e0efe9bf07ee51f9",
              "status": "affected",
              "versionType": "git",
              "lessThan": "2b3f79b90b231a682315fe2191bb71925650e183"
            },
            {
              "version": "ddd89d0a059d8e9740c75a97e0efe9bf07ee51f9",
              "status": "affected",
              "versionType": "git",
              "lessThan": "bbba4f92515238d76018e9b75e41b16d83df52c8"
            },
            {
              "version": "ddd89d0a059d8e9740c75a97e0efe9bf07ee51f9",
              "status": "affected",
              "versionType": "git",
              "lessThan": "1f5f94c6c6b2e4eaa5b45815509e21d0c6cfa81e"
            },
            {
              "version": "ddd89d0a059d8e9740c75a97e0efe9bf07ee51f9",
              "status": "affected",
              "versionType": "git",
              "lessThan": "32ac9097aa2463fcfc12f61cc4a9ebc3579cba7d"
            },
            {
              "version": "ddd89d0a059d8e9740c75a97e0efe9bf07ee51f9",
              "status": "affected",
              "versionType": "git",
              "lessThan": "929e4f044621c8cc30b612fb74e1410bef09e41b"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "5.8",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "5.8"
            },
            {
              "version": "5.10.261",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.10.*"
            },
            {
              "version": "5.15.212",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.15.*"
            },
            {
              "version": "6.1.178",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.1.*"
            },
            {
              "version": "6.6.145",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.6.*"
            },
            {
              "version": "6.12.97",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.12.*"
            },
            {
              "version": "6.18.40",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.18.*"
            },
            {
              "version": "7.1.5",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "7.1.*"
            },
            {
              "version": "7.2",
              "status": "unaffected",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ]
        }
      ]
    }
  }
}