CVE-2026-64408 (GCVE-0-2026-64408)

Vulnerability from cvelistv5 – Published: 2026-07-25 08:50 – Updated: 2026-10-19 20:38
VLAI
Title
Bluetooth: bnep: pin L2CAP connection during netdev registration
Summary
In the Linux kernel, the following vulnerability has been resolved: Bluetooth: bnep: pin L2CAP connection during netdev registration bnep_add_connection() reads the L2CAP connection without holding the channel lock, then passes its HCI device to register_netdev(). Controller teardown can clear and release that connection concurrently, leaving the network device registration path to dereference a freed parent device. Take a reference to the L2CAP connection while holding the channel lock. Retain it until register_netdev() has taken the parent device reference.
Severity
8.8 (High)
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-16 15:40 UTC
CWE
Assigner
Linux CNA under the mitre root
CNA scorecard D 53/100 over 7063 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 65f53e9802dbfae0e5758a91793c3f5f8bece49b , < 390b5db3ff8745187f094c4e915663b7b1f98944 (git)
Affected: 65f53e9802dbfae0e5758a91793c3f5f8bece49b , < 46a88784c4c9b96954dd86f747ce93f65efa1302 (git)
Affected: 65f53e9802dbfae0e5758a91793c3f5f8bece49b , < 551ae773ec64045b4e72099132654887e0270bcc (git)
Affected: 65f53e9802dbfae0e5758a91793c3f5f8bece49b , < ae215c5b6422d8eda443b861b124bd1be6969c31 (git)
Affected: 65f53e9802dbfae0e5758a91793c3f5f8bece49b , < df22adc7eafc22e651561813c11dc51a796b12ee (git)
Affected: 65f53e9802dbfae0e5758a91793c3f5f8bece49b , < a6b22dbd80926556290ad2243be25218d6956a19 (git)
Affected: 65f53e9802dbfae0e5758a91793c3f5f8bece49b , < 563a8573047182f550b1e1e030615755cd8c41da (git)
Affected: 65f53e9802dbfae0e5758a91793c3f5f8bece49b , < bb067a99a0356196c0b89a95721985485ebce5a5 (git)
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Linux Linux Affected: 3.13
Unaffected: 0 , < 3.13 (semver)
Unaffected: 5.10.261 , ≤ 5.10.* (semver)
Unaffected: 5.15.212 , ≤ 5.15.* (semver)
Unaffected: 6.1.178 , ≤ 6.1.* (semver)
Unaffected: 6.6.145 , ≤ 6.6.* (semver)
Unaffected: 6.12.96 , ≤ 6.12.* (semver)
Unaffected: 6.18.39 , ≤ 6.18.* (semver)
Unaffected: 7.1.4 , ≤ 7.1.* (semver)
Unaffected: 7.2 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
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      "current_release_date": "2026-07-30T08:28:42+00:00",
      "cve": "CVE-2026-64408",
      "id": "CVE-2026-64408",
      "initial_release_date": "2026-07-25T00:00:00+00:00",
      "product_status:known_affected": "246",
      "product_status:known_not_affected": "28",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: Bluetooth: bnep: pin L2CAP connection during netdev registration",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-64408.json",
      "version": "3"
    },
    "suse_vex": {
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      "current_release_date": "2026-10-17T00:10:28Z",
      "cve": "CVE-2026-64408",
      "id": "CVE-2026-64408",
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      "product_status:known_affected": "623",
      "product_status:known_not_affected": "59",
      "product_status:recommended": "279",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2026-64408",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/2026/cve-2026-64408.json",
      "version": "15"
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            ],
            "problemTypes": [
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                    "description": "CWE-416 Use After Free",
                    "lang": "en",
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                ]
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              "dateUpdated": "2026-10-16T15:40:17.848Z",
              "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
              "shortName": "CISA-ADP"
            },
            "title": "CISA ADP Vulnrichment"
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        ],
        "cna": {
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}



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