{
  "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-2026-31403",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2026-31403",
    "idYear": 2026,
    "status": "PUBLISHED",
    "publishedAt": "2026-04-03T15:16:06.444Z",
    "updatedAt": "2026-10-19T18:35:46.952Z",
    "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": "NFSD: Hold net reference for the lifetime of /proc/fs/nfs/exports fd",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nNFSD: Hold net reference for the lifetime of /proc/fs/nfs/exports fd\n\nThe /proc/fs/nfs/exports proc entry is created at module init\nand persists for the module's lifetime. exports_proc_open()\ncaptures the caller's current network namespace and stores\nits svc_export_cache in seq->private, but takes no reference\non the namespace. If the namespace is subsequently torn down\n(e.g. container destruction after the opener does setns() to a\ndifferent namespace), nfsd_net_exit() calls nfsd_export_shutdown()\nwhich frees the cache. Subsequent reads on the still-open fd\ndereference the freed cache_detail, walking a freed hash table.\n\nHold a reference on the struct net for the lifetime of the open\nfile descriptor. This prevents nfsd_net_exit() from running --\nand thus prevents nfsd_export_shutdown() from freeing the cache\n-- while any exports fd is open. cache_detail already stores\nits net pointer (cd->net, set by cache_create_net()), so\nexports_release() can retrieve it without additional per-file\nstorage.",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "96d851c4d28de8cc83fe2bd5c6bc2eb8f253a6c5",
              "status": "affected",
              "versionType": "git",
              "lessThan": "76740c28050dc6db2f5550f1325b00a11bbb3255"
            },
            {
              "version": "96d851c4d28de8cc83fe2bd5c6bc2eb8f253a6c5",
              "status": "affected",
              "versionType": "git",
              "lessThan": "c7f406fb341d6747634b8b1fa5461656e5e56076"
            },
            {
              "version": "96d851c4d28de8cc83fe2bd5c6bc2eb8f253a6c5",
              "status": "affected",
              "versionType": "git",
              "lessThan": "d1a19217995df9c7e4118f5a2820c5032fef2945"
            },
            {
              "version": "96d851c4d28de8cc83fe2bd5c6bc2eb8f253a6c5",
              "status": "affected",
              "versionType": "git",
              "lessThan": "e3d77f935639e6ae4b381c80464c31df998d61f4"
            },
            {
              "version": "96d851c4d28de8cc83fe2bd5c6bc2eb8f253a6c5",
              "status": "affected",
              "versionType": "git",
              "lessThan": "db4a9f99b12a7ee1c19d86c83a3b752c7effa6c6"
            },
            {
              "version": "96d851c4d28de8cc83fe2bd5c6bc2eb8f253a6c5",
              "status": "affected",
              "versionType": "git",
              "lessThan": "6a8d70e2ad6aad2c345a5048edcb8168036f97d6"
            },
            {
              "version": "96d851c4d28de8cc83fe2bd5c6bc2eb8f253a6c5",
              "status": "affected",
              "versionType": "git",
              "lessThan": "e7fcf179b82d3a3730fd8615da01b087cc654d0b"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "3.9",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "3.9"
            },
            {
              "version": "5.10.253",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.10.*"
            },
            {
              "version": "6.1.167",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.1.*"
            },
            {
              "version": "6.6.130",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.6.*"
            },
            {
              "version": "6.12.78",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.12.*"
            },
            {
              "version": "6.18.20",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.18.*"
            },
            {
              "version": "6.19.10",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.19.*"
            },
            {
              "version": "7.0",
              "status": "unaffected",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ]
        }
      ]
    }
  }
}