{
  "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-2026-74311",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2026-74311",
    "idYear": 2026,
    "status": "PUBLISHED",
    "publishedAt": "2026-08-15T05:58:10.711Z",
    "updatedAt": "2026-08-17T05:45:43.827Z",
    "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": "virtio: rtc: tear down old virtqueues before restore",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nvirtio: rtc: tear down old virtqueues before restore\n\nvirtio_device_restore() resets the device and restores the negotiated\nfeatures before calling ->restore(). viortc_freeze() intentionally\nleaves the existing virtqueues in place so the alarm queue can still\nwake the system, but viortc_restore() immediately calls\nviortc_init_vqs() without first deleting those old queues.\n\nIf virtqueue reinitialization fails on virtio-pci, the transport error\npath can run vp_del_vqs() against a newly allocated vp_dev->vqs array\nwhile vdev->vqs still contains the old virtqueues. vp_del_vqs() then\nlooks up queue state through the new array and can dereference a NULL\ninfo pointer in vp_del_vq(), crashing the guest kernel during restore.\n\nThis can also happen during a non-faulty reinitialization, when one of\nthe vp_find_vqs_msix() attempts is unsuccessful before a later attempt\nwould succeed.\n\nDelete the stale virtqueues before rebuilding them. If restore fails\nbefore virtio_device_ready(), reuse the remove path to stop the device.\nOnce the device is ready, return errors directly instead of deleting the\nvirtqueues again.",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "0623c759276885c3ae88197ba6fb5c9c6ba8612f",
              "status": "affected",
              "versionType": "git",
              "lessThan": "79366023aa891ca31376021a7bccff6384ca1ff1"
            },
            {
              "version": "0623c759276885c3ae88197ba6fb5c9c6ba8612f",
              "status": "affected",
              "versionType": "git",
              "lessThan": "aebebd1e9d70b650fc9e877082e0134edcf511da"
            },
            {
              "version": "0623c759276885c3ae88197ba6fb5c9c6ba8612f",
              "status": "affected",
              "versionType": "git",
              "lessThan": "548d2208455f14e6121404c6e30e997bfe0cd264"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "6.16",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "6.16"
            },
            {
              "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": "*"
            }
          ]
        }
      ]
    }
  }
}