{
  "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-2026-63823",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2026-63823",
    "idYear": 2026,
    "status": "PUBLISHED",
    "publishedAt": "2026-07-19T12:02:19.847Z",
    "updatedAt": "2026-10-19T20:07:48.726Z",
    "importedAt": "2026-10-24T01:58:20.586Z",
    "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": "keys: Pin request_key_auth payload in instantiate paths",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nkeys: Pin request_key_auth payload in instantiate paths\n\nA: request_key()       B: KEYCTL_INSTANTIATE_IOV\n================       =========================\n\ncreate auth key\nstore rka in auth key\nwait for helper\n                       get auth key\n                       load rka from auth key\n                       copy user payload\n                       sleep on #PF\n\nhelper completed\ndetach and free rka\ndestroy auth key\n                       wake up\n                       use rka->target_key\n                       **USE-AFTER-FREE**\n\nGive request_key_auth payloads a refcount.  Take a payload reference while\nauthkey->sem stabilizes the payload and revocation state.  Hold that\nreference across the instantiate and reject paths.  Drop the auth key\nowning reference from revoke and destroy.\n\n[jarkko: Replaced the first two paragraphs of text with an actual\n concurrency scenario.]",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "b5f545c880a2a47947ba2118b2509644ab7a2969",
              "status": "affected",
              "versionType": "git",
              "lessThan": "d8274181b0f28d450b42489723a5ba81042158d7"
            },
            {
              "version": "b5f545c880a2a47947ba2118b2509644ab7a2969",
              "status": "affected",
              "versionType": "git",
              "lessThan": "4982bfabce6b33b3c9eddb4fb900fe5568b7cf91"
            },
            {
              "version": "b5f545c880a2a47947ba2118b2509644ab7a2969",
              "status": "affected",
              "versionType": "git",
              "lessThan": "708709c65a1832a99b0eef8ae46e343ddaca3d06"
            },
            {
              "version": "b5f545c880a2a47947ba2118b2509644ab7a2969",
              "status": "affected",
              "versionType": "git",
              "lessThan": "35ab4db86774d82389e4b9559e26ab7f68d8e395"
            },
            {
              "version": "b5f545c880a2a47947ba2118b2509644ab7a2969",
              "status": "affected",
              "versionType": "git",
              "lessThan": "f9b68632ac93cc742f2e411021c4dbfe452ea0c2"
            },
            {
              "version": "b5f545c880a2a47947ba2118b2509644ab7a2969",
              "status": "affected",
              "versionType": "git",
              "lessThan": "7216ce8cb12fee44e309503955bb83806b106129"
            },
            {
              "version": "b5f545c880a2a47947ba2118b2509644ab7a2969",
              "status": "affected",
              "versionType": "git",
              "lessThan": "83c0a1cb296d955d5f4d1f0bd8a769ba8ed8c29f"
            },
            {
              "version": "b5f545c880a2a47947ba2118b2509644ab7a2969",
              "status": "affected",
              "versionType": "git",
              "lessThan": "fd15b457a86939c38aa12116adabd8ff686c5e51"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "2.6.16",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "2.6.16"
            },
            {
              "version": "5.10.260",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.10.*"
            },
            {
              "version": "5.15.211",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.15.*"
            },
            {
              "version": "6.1.177",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.1.*"
            },
            {
              "version": "6.6.144",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.6.*"
            },
            {
              "version": "6.12.95",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.12.*"
            },
            {
              "version": "6.18.38",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.18.*"
            },
            {
              "version": "7.1.3",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "7.1.*"
            },
            {
              "version": "7.2",
              "status": "unaffected",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ]
        }
      ]
    }
  }
}