{
  "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-2026-31663",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2026-31663",
    "idYear": 2026,
    "status": "PUBLISHED",
    "publishedAt": "2026-04-24T14:45:13.239Z",
    "updatedAt": "2026-10-21T12:39:39.754Z",
    "importedAt": "2026-10-24T01:58:02.025Z",
    "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": "xfrm: hold dev ref until after transport_finish NF_HOOK",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nxfrm: hold dev ref until after transport_finish NF_HOOK\n\nAfter async crypto completes, xfrm_input_resume() calls dev_put()\nimmediately on re-entry before the skb reaches transport_finish.\nThe skb->dev pointer is then used inside NF_HOOK and its okfn,\nwhich can race with device teardown.\n\nRemove the dev_put from the async resumption entry and instead\ndrop the reference after the NF_HOOK call in transport_finish,\nusing a saved device pointer since NF_HOOK may consume the skb.\nThis covers NF_DROP, NF_QUEUE and NF_STOLEN paths that skip\nthe okfn.\n\nFor non-transport exits (decaps, gro, drop) and secondary\nasync return points, release the reference inline when\nasync is set.",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "acf568ee859f098279eadf551612f103afdacb4e",
              "status": "affected",
              "versionType": "git",
              "lessThan": "94439cbe478b53f92223da9aae95fffb28623c3f"
            },
            {
              "version": "acf568ee859f098279eadf551612f103afdacb4e",
              "status": "affected",
              "versionType": "git",
              "lessThan": "4236c30b437b80f673b9e08c8fae38b8d471ac9e"
            },
            {
              "version": "acf568ee859f098279eadf551612f103afdacb4e",
              "status": "affected",
              "versionType": "git",
              "lessThan": "0f451b43c88bf2b9c038b414be580efee42e031b"
            },
            {
              "version": "acf568ee859f098279eadf551612f103afdacb4e",
              "status": "affected",
              "versionType": "git",
              "lessThan": "5002beda5cac69d522dc54da0d5d463ed9c963d2"
            },
            {
              "version": "acf568ee859f098279eadf551612f103afdacb4e",
              "status": "affected",
              "versionType": "git",
              "lessThan": "1c428b03840094410c5fb6a5db30640486bbbfcb"
            },
            {
              "version": "69895c5ea0ca2e8d7de1e6d36965d0ab9730787f",
              "status": "affected",
              "versionType": "git"
            },
            {
              "version": "833760100588acfb267dac4d6a02ab9931237739",
              "status": "affected",
              "versionType": "git"
            },
            {
              "version": "e095ecaec6d94aa2156cceb98a85d409b51190f3",
              "status": "affected",
              "versionType": "git"
            },
            {
              "version": "3.2.100",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "3.3"
            },
            {
              "version": "3.16.55",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "3.17"
            },
            {
              "version": "4.14.24",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "4.15"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "4.15",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "4.15"
            },
            {
              "version": "6.6.160",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.6.*"
            },
            {
              "version": "6.12.94",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.12.*"
            },
            {
              "version": "6.18.23",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.18.*"
            },
            {
              "version": "6.19.13",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.19.*"
            },
            {
              "version": "7.0",
              "status": "unaffected",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ]
        }
      ]
    }
  }
}