{
  "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-2026-74534",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2026-74534",
    "idYear": 2026,
    "status": "PUBLISHED",
    "publishedAt": "2026-08-15T12:27:47.831Z",
    "updatedAt": "2026-10-23T08:20:16.546Z",
    "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: ISO: fix refcounting of iso_conn",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: ISO: fix refcounting of iso_conn\n\niso_conn_del() and iso_chan_del() have a race that results to double-put\nof iso_conn:\n\n    [Task hdev->workqueue]         [Task 2]\n    iso_conn_del                   iso_chan_del\n      iso_conn_hold_unless_zero      iso_conn_lock\n      iso_conn_lock                  conn->sk = NULL\n                                     iso_conn_unlock\n      sk = iso_sock_hold(conn)  <---------´\n      if (!sk) iso_conn_put          iso_conn_put\n      iso_conn_put /* UAF */\n\nThe extra put for !sk in iso_conn_del() is currently required since\nfailing iso_chan_add() may leave iso_conn not associated with any sk.\n\nFix by having iso_pi(sk)->conn own refcount when non-NULL, so\niso_conn_del does not need to put it.  Adjust the iso_conn_add()\nrefcounting so that conn is put if it does not get associated with an\nsk.",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "a58d0f5dac322e16cc75334d000666512341bde5",
              "status": "affected",
              "versionType": "git",
              "lessThan": "42c8bd6ac81e21200bb90f1eaf43d19352eec6d7"
            },
            {
              "version": "dc26097bdb864a0d5955b9a25e43376ffc1af99b",
              "status": "affected",
              "versionType": "git",
              "lessThan": "3b921533e8aa95b77aadcf31737595578e735f3c"
            },
            {
              "version": "dc26097bdb864a0d5955b9a25e43376ffc1af99b",
              "status": "affected",
              "versionType": "git",
              "lessThan": "8208b4939afb0a1977fffe902c3ca42fe0f3baaa"
            },
            {
              "version": "dc26097bdb864a0d5955b9a25e43376ffc1af99b",
              "status": "affected",
              "versionType": "git",
              "lessThan": "fdfde532ab1caa165fcd8985001157ac8b4db365"
            },
            {
              "version": "f53e7489273dc2bb307bf50f319b3762d45534f0",
              "status": "affected",
              "versionType": "git"
            },
            {
              "version": "6.12.2",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "6.12.113"
            },
            {
              "version": "6.11.11",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "6.12"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "6.13",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "6.13"
            },
            {
              "version": "6.12.113",
              "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": "*"
            }
          ]
        }
      ]
    }
  }
}