{
  "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-2026-46259",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2026-46259",
    "idYear": 2026,
    "status": "PUBLISHED",
    "publishedAt": "2026-06-03T15:49:56.428Z",
    "updatedAt": "2026-10-19T19:36:56.158Z",
    "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": "procfs: fix missing RCU protection when reading real_parent in do_task_stat()",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nprocfs: fix missing RCU protection when reading real_parent in do_task_stat()\n\nWhen reading /proc/[pid]/stat, do_task_stat() accesses task->real_parent\nwithout proper RCU protection, which leads to:\n\n  cpu 0                               cpu 1\n  -----                               -----\n  do_task_stat\n    var = task->real_parent\n                                      release_task\n                                        call_rcu(delayed_put_task_struct)\n    task_tgid_nr_ns(var)\n      rcu_read_lock   <--- Too late to protect task->real_parent!\n      task_pid_ptr    <--- UAF!\n      rcu_read_unlock\n\nThis patch uses task_ppid_nr_ns() instead of task_tgid_nr_ns() to add\nproper RCU protection for accessing task->real_parent.",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "06fffb1267c9d986687b69d74a46ee332a50575e",
              "status": "affected",
              "versionType": "git",
              "lessThan": "fefa0fcd78be465b7ad4c497fa6ec90d64194c04"
            },
            {
              "version": "06fffb1267c9d986687b69d74a46ee332a50575e",
              "status": "affected",
              "versionType": "git",
              "lessThan": "c93a33f28f915d446eea6fb3f0e1def0b3af1982"
            },
            {
              "version": "06fffb1267c9d986687b69d74a46ee332a50575e",
              "status": "affected",
              "versionType": "git",
              "lessThan": "1c8dc5b5517546c68ffae40b948336122bb61306"
            },
            {
              "version": "06fffb1267c9d986687b69d74a46ee332a50575e",
              "status": "affected",
              "versionType": "git",
              "lessThan": "0e64bd46a04a4fd61279aca9f53a664e9e5f7e7e"
            },
            {
              "version": "06fffb1267c9d986687b69d74a46ee332a50575e",
              "status": "affected",
              "versionType": "git",
              "lessThan": "73ec7c96601d61d52310c659145bb06d933a0fa6"
            },
            {
              "version": "06fffb1267c9d986687b69d74a46ee332a50575e",
              "status": "affected",
              "versionType": "git",
              "lessThan": "4f9ae386861e280b7631ca252f798d25575627ee"
            },
            {
              "version": "06fffb1267c9d986687b69d74a46ee332a50575e",
              "status": "affected",
              "versionType": "git",
              "lessThan": "dd8b13cb4ff1a4545a214ed897fdf2bc341155b6"
            },
            {
              "version": "06fffb1267c9d986687b69d74a46ee332a50575e",
              "status": "affected",
              "versionType": "git",
              "lessThan": "76149d53502cf17ef3ae454ff384551236fba867"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "2.6.26",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "2.6.26"
            },
            {
              "version": "5.10.252",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.10.*"
            },
            {
              "version": "5.15.202",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.15.*"
            },
            {
              "version": "6.1.165",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.1.*"
            },
            {
              "version": "6.6.128",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.6.*"
            },
            {
              "version": "6.12.75",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.12.*"
            },
            {
              "version": "6.18.14",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.18.*"
            },
            {
              "version": "6.19.4",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.19.*"
            },
            {
              "version": "7.0",
              "status": "unaffected",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ]
        }
      ]
    }
  }
}