{
  "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-2026-74540",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2026-74540",
    "idYear": 2026,
    "status": "PUBLISHED",
    "publishedAt": "2026-08-15T12:27:51.522Z",
    "updatedAt": "2026-10-16T19:05:54.604Z",
    "importedAt": "2026-10-24T01:58:30.346Z",
    "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": "Bluetooth: L2CAP: fix UAF in l2cap_le_connect_rsp",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: L2CAP: fix UAF in l2cap_le_connect_rsp\n\nl2cap_le_connect_rsp() obtains a channel via\n__l2cap_get_chan_by_ident() but neither holds a reference nor uses\nl2cap_chan_hold_unless_zero() before locking and operating on it.\nA concurrent l2cap_chan_del() triggered by a remote disconnect can\nfree the channel between the lookup and l2cap_chan_lock(), causing\na use-after-free.\n\nThe BR/EDR counterpart l2cap_connect_rsp() and the sibling handler\nl2cap_le_command_rej() already use l2cap_chan_hold_unless_zero()\nto safely hold a reference, but l2cap_le_connect_rsp() was left\nunprotected.\n\nFix by adding l2cap_chan_hold_unless_zero() after the ident lookup\nand l2cap_chan_put() on the exit path, consistent with other L2CAP\nresponse handlers.",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "f1496dee9cbde2a62821f4441dadb0d3360f60c3",
              "status": "affected",
              "versionType": "git",
              "lessThan": "15d6c2367217a6a20b1abae9f38ded716bf620f1"
            },
            {
              "version": "f1496dee9cbde2a62821f4441dadb0d3360f60c3",
              "status": "affected",
              "versionType": "git",
              "lessThan": "1818180fe12d6cec7a437bc59cde8efdf6b10250"
            },
            {
              "version": "f1496dee9cbde2a62821f4441dadb0d3360f60c3",
              "status": "affected",
              "versionType": "git",
              "lessThan": "8325eafb38c3dee5af329266393763693d17381b"
            },
            {
              "version": "f1496dee9cbde2a62821f4441dadb0d3360f60c3",
              "status": "affected",
              "versionType": "git",
              "lessThan": "fd4c1e301bdec60a40728ea37de531cbccda501a"
            },
            {
              "version": "f1496dee9cbde2a62821f4441dadb0d3360f60c3",
              "status": "affected",
              "versionType": "git",
              "lessThan": "522b730c62c53a1981604fd73524697fd347830d"
            },
            {
              "version": "f1496dee9cbde2a62821f4441dadb0d3360f60c3",
              "status": "affected",
              "versionType": "git",
              "lessThan": "58e3c5289ad230a7e24ae4b0c7b43f5ee6e32136"
            },
            {
              "version": "f1496dee9cbde2a62821f4441dadb0d3360f60c3",
              "status": "affected",
              "versionType": "git",
              "lessThan": "09f447accc2570751e7d17f0dc0788b40d3edade"
            },
            {
              "version": "f1496dee9cbde2a62821f4441dadb0d3360f60c3",
              "status": "affected",
              "versionType": "git",
              "lessThan": "c4740e7f23ff9a8210198d8b4703259e21b9f69d"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "3.14",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "3.14"
            },
            {
              "version": "5.10.265",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.10.*"
            },
            {
              "version": "5.15.216",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.15.*"
            },
            {
              "version": "6.1.183",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.1.*"
            },
            {
              "version": "6.6.151",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.6.*"
            },
            {
              "version": "6.12.103",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.12.*"
            },
            {
              "version": "6.18.44",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.18.*"
            },
            {
              "version": "7.1.8",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "7.1.*"
            },
            {
              "version": "7.2",
              "status": "unaffected",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ]
        }
      ]
    }
  }
}