{
  "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-2026-53075",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2026-53075",
    "idYear": 2026,
    "status": "PUBLISHED",
    "publishedAt": "2026-06-24T16:30:16.214Z",
    "updatedAt": "2026-10-19T19:47:15.461Z",
    "importedAt": "2026-10-24T01:58:14.884Z",
    "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": "ppp: require CAP_NET_ADMIN in target netns for unattached ioctls",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nppp: require CAP_NET_ADMIN in target netns for unattached ioctls\n\n/dev/ppp open is currently authorized against file->f_cred->user_ns,\nwhile unattached administrative ioctls operate on current->nsproxy->net_ns.\n\nAs a result, a local unprivileged user can create a new user namespace\nwith CLONE_NEWUSER, gain CAP_NET_ADMIN only in that new user namespace,\nand still issue PPPIOCNEWUNIT, PPPIOCATTACH, or PPPIOCATTCHAN against\nan inherited network namespace.\n\nRequire CAP_NET_ADMIN in the user namespace that owns the target network\nnamespace before handling unattached PPP administrative ioctls.\n\nThis preserves normal pppd operation in the network namespace it is\nactually privileged in, while rejecting the userns-only inherited-netns\ncase.",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "273ec51dd7ceaa76e038875d85061ec856d8905e",
              "status": "affected",
              "versionType": "git",
              "lessThan": "c9edd90c57ae23692fff6b049fdfa4572a9fd532"
            },
            {
              "version": "273ec51dd7ceaa76e038875d85061ec856d8905e",
              "status": "affected",
              "versionType": "git",
              "lessThan": "5080e188c914110034bbc569d5cfa2f06204681d"
            },
            {
              "version": "273ec51dd7ceaa76e038875d85061ec856d8905e",
              "status": "affected",
              "versionType": "git",
              "lessThan": "67e901e28d177ac9a9bed76d69ce3471e704a89e"
            },
            {
              "version": "273ec51dd7ceaa76e038875d85061ec856d8905e",
              "status": "affected",
              "versionType": "git",
              "lessThan": "954745d0223e7caec917c0b2d1a889ff56fa6e54"
            },
            {
              "version": "273ec51dd7ceaa76e038875d85061ec856d8905e",
              "status": "affected",
              "versionType": "git",
              "lessThan": "3b2c2157dc2afc5c17cd7238afefca92f1ef330e"
            },
            {
              "version": "273ec51dd7ceaa76e038875d85061ec856d8905e",
              "status": "affected",
              "versionType": "git",
              "lessThan": "5013be175c7ffd8b39efbc3c9c4db5b10b85fea8"
            },
            {
              "version": "273ec51dd7ceaa76e038875d85061ec856d8905e",
              "status": "affected",
              "versionType": "git",
              "lessThan": "1a8a51ce85075a56a743b6f142606dd2696a391c"
            },
            {
              "version": "273ec51dd7ceaa76e038875d85061ec856d8905e",
              "status": "affected",
              "versionType": "git",
              "lessThan": "2bb6379416fd19f44c3423a00bfd8626259f6067"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "2.6.30",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "2.6.30"
            },
            {
              "version": "5.10.258",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.10.*"
            },
            {
              "version": "5.15.209",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.15.*"
            },
            {
              "version": "6.1.175",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.1.*"
            },
            {
              "version": "6.6.141",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.6.*"
            },
            {
              "version": "6.12.91",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.12.*"
            },
            {
              "version": "6.18.33",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.18.*"
            },
            {
              "version": "7.0.10",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "7.0.*"
            },
            {
              "version": "7.1",
              "status": "unaffected",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ]
        }
      ]
    }
  }
}