{
  "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-2024-36013",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2024-36013",
    "idYear": 2024,
    "status": "PUBLISHED",
    "publishedAt": "2024-05-23T07:03:07.571Z",
    "updatedAt": "2026-08-05T11:31:36.021Z",
    "importedAt": "2026-10-24T01:57:11.582Z",
    "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 slab-use-after-free in l2cap_connect()",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: L2CAP: Fix slab-use-after-free in l2cap_connect()\n\nExtend a critical section to prevent chan from early freeing.\nAlso make the l2cap_connect() return type void. Nothing is using the\nreturned value but it is ugly to return a potentially freed pointer.\nMaking it void will help with backports because earlier kernels did use\nthe return value. Now the compile will break for kernels where this\npatch is not a complete fix.\n\nCall stack summary:\n\n[use]\nl2cap_bredr_sig_cmd\n  l2cap_connect\n  ┌ mutex_lock(&conn->chan_lock);\n  │ chan = pchan->ops->new_connection(pchan); <- alloc chan\n  │ __l2cap_chan_add(conn, chan);\n  │   l2cap_chan_hold(chan);\n  │   list_add(&chan->list, &conn->chan_l);   ... (1)\n  └ mutex_unlock(&conn->chan_lock);\n    chan->conf_state              ... (4) <- use after free\n\n[free]\nl2cap_conn_del\n┌ mutex_lock(&conn->chan_lock);\n│ foreach chan in conn->chan_l:            ... (2)\n│   l2cap_chan_put(chan);\n│     l2cap_chan_destroy\n│       kfree(chan)               ... (3) <- chan freed\n└ mutex_unlock(&conn->chan_lock);\n\n==================================================================\nBUG: KASAN: slab-use-after-free in instrument_atomic_read\ninclude/linux/instrumented.h:68 [inline]\nBUG: KASAN: slab-use-after-free in _test_bit\ninclude/asm-generic/bitops/instrumented-non-atomic.h:141 [inline]\nBUG: KASAN: slab-use-after-free in l2cap_connect+0xa67/0x11a0\nnet/bluetooth/l2cap_core.c:4260\nRead of size 8 at addr ffff88810bf040a0 by task kworker/u3:1/311",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "73ffa904b78287f6acf8797e040150aa26a4af4a",
              "status": "affected",
              "versionType": "git",
              "lessThan": "8629a65a48890769c47ebc9b6e57c02a80a8975e"
            },
            {
              "version": "73ffa904b78287f6acf8797e040150aa26a4af4a",
              "status": "affected",
              "versionType": "git",
              "lessThan": "cfe560c7050bfb37b0d2491bbe7cd8b59e77fdc5"
            },
            {
              "version": "73ffa904b78287f6acf8797e040150aa26a4af4a",
              "status": "affected",
              "versionType": "git",
              "lessThan": "826af9d2f69567c646ff46d10393d47e30ad23c6"
            },
            {
              "version": "73ffa904b78287f6acf8797e040150aa26a4af4a",
              "status": "affected",
              "versionType": "git",
              "lessThan": "4d7b41c0e43995b0e992b9f8903109275744b658"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "3.0",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "3.0"
            },
            {
              "version": "6.1.178",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.1.*"
            },
            {
              "version": "6.6.32",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.6.*"
            },
            {
              "version": "6.8.11",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.8.*"
            },
            {
              "version": "6.9",
              "status": "unaffected",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ]
        }
      ]
    }
  }
}