{
  "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-2026-93795",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2026-93795",
    "idYear": 2026,
    "status": "PUBLISHED",
    "publishedAt": "2026-09-24T16:02:28.654Z",
    "updatedAt": "2026-10-03T10:57:30.314Z",
    "importedAt": "2026-10-24T01:58:41.756Z",
    "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": "blk-cgroup: fix leaks and online flag on radix_tree_insert failure",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nblk-cgroup: fix leaks and online flag on radix_tree_insert failure\n\nWhen radix_tree_insert() fails in blkg_create(), the error path has two\nissues:\n\n1. blkg->online is set to true unconditionally, even when the blkg was\n   never fully inserted.  Move the assignment inside the success block.\n\n2. The error path calls blkg_put() without first calling\n   percpu_ref_kill().  Because the refcount is still in percpu mode,\n   percpu_ref_put() only does this_cpu_sub() without checking for zero,\n   so blkg_release() is never triggered.  This permanently leaks the\n   blkg memory, its percpu iostat, policy data, the parent blkg\n   reference, and the cgroup css reference — the latter preventing the\n   cgroup from ever being destroyed.\n\nFix by replacing blkg_put() with percpu_ref_kill(), matching the pattern\nused in blkg_destroy().",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "7fcf2b033b84e261dca283bc2911aaea4b07b525",
              "status": "affected",
              "versionType": "git",
              "lessThan": "0f840db042caee9d2f3dcdcf97d6674f6e4c1e30"
            },
            {
              "version": "7fcf2b033b84e261dca283bc2911aaea4b07b525",
              "status": "affected",
              "versionType": "git",
              "lessThan": "f53945d7c712efe63fadbcc5ffed6370871fd0d3"
            },
            {
              "version": "7fcf2b033b84e261dca283bc2911aaea4b07b525",
              "status": "affected",
              "versionType": "git",
              "lessThan": "ada8270ccdb6f212da5eb22614c28ea418746a4a"
            },
            {
              "version": "7fcf2b033b84e261dca283bc2911aaea4b07b525",
              "status": "affected",
              "versionType": "git",
              "lessThan": "c3650be82ef6e7af13b79b2d10a7363bdf54aa7f"
            },
            {
              "version": "7fcf2b033b84e261dca283bc2911aaea4b07b525",
              "status": "affected",
              "versionType": "git",
              "lessThan": "6e85f02d45b5977c0326a8d854c6db878aa6b34a"
            },
            {
              "version": "7fcf2b033b84e261dca283bc2911aaea4b07b525",
              "status": "affected",
              "versionType": "git",
              "lessThan": "4c0d150fb98ea40760611979f4e664c244b20966"
            },
            {
              "version": "7fcf2b033b84e261dca283bc2911aaea4b07b525",
              "status": "affected",
              "versionType": "git",
              "lessThan": "dbbca20764382b4d411ec2918f4e278ffe547acc"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "5.0",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "5.0"
            },
            {
              "version": "5.10.271",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.10.*"
            },
            {
              "version": "5.15.222",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.15.*"
            },
            {
              "version": "6.1.189",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.1.*"
            },
            {
              "version": "6.6.158",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.6.*"
            },
            {
              "version": "6.12.111",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.12.*"
            },
            {
              "version": "6.18.53",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.18.*"
            },
            {
              "version": "7.2",
              "status": "unaffected",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ]
        }
      ]
    }
  }
}