{
  "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-2026-89983",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2026-89983",
    "idYear": 2026,
    "status": "PUBLISHED",
    "publishedAt": "2026-09-16T10:32:59.461Z",
    "updatedAt": "2026-10-19T08:55:57.766Z",
    "importedAt": "2026-10-24T01:58:35.090Z",
    "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": "i2c: core: fix debugfs UAF on adapter removal",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\ni2c: core: fix debugfs UAF on adapter removal\n\ni2c_del_adapter() frees the adapter's debugfs directory before it\nunregisters the adapter device, but the new_device sysfs attribute\nstays writable until device_del(). A write racing with removal still\nreaches i2c_device_probe(), which passes the freed adap->debugfs to\ndebugfs_create_dir() as the new client's parent:\n\n  BUG: KASAN: slab-use-after-free in lookup_noperm_common+0x407/0x430\n  Read of size 4 at addr ffff88803ef87810 by task syz.0.61/6090\n   lookup_noperm_common+0x407/0x430\n   simple_start_creating+0x9c/0x110\n   debugfs_start_creating+0xdb/0x1a0\n   debugfs_create_dir+0x24/0x350\n   i2c_device_probe+0x814/0xbf0\n\nIt's technically possible to create a client after i2c_deregister_clients\nhas run. That client will never be unregistered and make\nwait_for_completion hang.\n\nClose the window by removing the new_device attribute at the start of\ni2c_del_adapter(). device_remove_file() will drain any clients left.",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "0e8926abfd7aee220e44be5566affd7a8580b50e",
              "status": "affected",
              "versionType": "git",
              "lessThan": "dc33a9762538b3250ed6b5644a4d44c748be33a6"
            },
            {
              "version": "e2a268b0f512fb18ae5961b1fdfaf610ed6bd661",
              "status": "affected",
              "versionType": "git",
              "lessThan": "1f1bcd4eca6caa3e4258d9a31925112539406eb6"
            },
            {
              "version": "4a2be5a72865bdd219b2d8c327b9fa03e87a4a9e",
              "status": "affected",
              "versionType": "git",
              "lessThan": "f9094ace03e0a532cc6505d2e97b61ae738da4ed"
            },
            {
              "version": "73febd775bdbdb98c81255ff85773ac410ded5c4",
              "status": "affected",
              "versionType": "git",
              "lessThan": "643fb872aa04342d27dbef52b2b3cf3fe71b2c7b"
            },
            {
              "version": "73febd775bdbdb98c81255ff85773ac410ded5c4",
              "status": "affected",
              "versionType": "git",
              "lessThan": "112b3d48084c820bbccf41d9783fd122e3ac4cb0"
            },
            {
              "version": "73febd775bdbdb98c81255ff85773ac410ded5c4",
              "status": "affected",
              "versionType": "git",
              "lessThan": "552836be2d95c688eede6371f85532abe1a71232"
            },
            {
              "version": "73febd775bdbdb98c81255ff85773ac410ded5c4",
              "status": "affected",
              "versionType": "git",
              "lessThan": "b15b548d52b43ba8ac4652bc2c7244a8dd1e9622"
            },
            {
              "version": "5.15.168",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "5.15.221"
            },
            {
              "version": "6.1.113",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "6.1.188"
            },
            {
              "version": "6.6.55",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "6.6.157"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "6.8",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "6.8"
            },
            {
              "version": "5.15.221",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.15.*"
            },
            {
              "version": "6.1.188",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.1.*"
            },
            {
              "version": "6.6.157",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.6.*"
            },
            {
              "version": "6.12.110",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.12.*"
            },
            {
              "version": "6.18.51",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.18.*"
            },
            {
              "version": "7.2.5",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "7.2.*"
            },
            {
              "version": "7.3",
              "status": "unaffected",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ]
        }
      ]
    }
  }
}