Vulnerability details
CVE-2026-64408
Linux Linux
Bluetooth: bnep: pin L2CAP connection during netdev registration
CVSS 3.1
8.8High
Official description
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.
CVSS scores
| Score | Version | Source | Vector |
|---|---|---|---|
| 8.8High | 3.1 | CVEProject cvelistV5 (CNA) (Linux) | CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
Affected products
| Vendor | Product | Versions | Source |
|---|---|---|---|
| Linux | Linux | 3.13 | CVEProject cvelistV5 (CNA) |
| Linux | Linux | 65f53e9802dbfae0e5758a91793c3f5f8bece49b ≤ v < 46a88784c4c9b96954dd86f747ce93f65efa1302 | CVEProject cvelistV5 (CNA) |
| Linux | Linux | 65f53e9802dbfae0e5758a91793c3f5f8bece49b ≤ v < 551ae773ec64045b4e72099132654887e0270bcc | CVEProject cvelistV5 (CNA) |
| Linux | Linux | 65f53e9802dbfae0e5758a91793c3f5f8bece49b ≤ v < ae215c5b6422d8eda443b861b124bd1be6969c31 | CVEProject cvelistV5 (CNA) |
| Linux | Linux | 65f53e9802dbfae0e5758a91793c3f5f8bece49b ≤ v < 390b5db3ff8745187f094c4e915663b7b1f98944 | CVEProject cvelistV5 (CNA) |
| Linux | Linux | 65f53e9802dbfae0e5758a91793c3f5f8bece49b ≤ v < a6b22dbd80926556290ad2243be25218d6956a19 | CVEProject cvelistV5 (CNA) |
| Linux | Linux | 65f53e9802dbfae0e5758a91793c3f5f8bece49b ≤ v < 563a8573047182f550b1e1e030615755cd8c41da | CVEProject cvelistV5 (CNA) |
| Linux | Linux | 65f53e9802dbfae0e5758a91793c3f5f8bece49b ≤ v < bb067a99a0356196c0b89a95721985485ebce5a5 | CVEProject cvelistV5 (CNA) |
| Linux | Linux | 65f53e9802dbfae0e5758a91793c3f5f8bece49b ≤ v < df22adc7eafc22e651561813c11dc51a796b12ee | CVEProject cvelistV5 (CNA) |
References and advisories
8- https://git.kernel.org/stable/c/390b5db3ff8745187f094c4e915663b7b1f98944
- https://git.kernel.org/stable/c/46a88784c4c9b96954dd86f747ce93f65efa1302
- https://git.kernel.org/stable/c/551ae773ec64045b4e72099132654887e0270bcc
- https://git.kernel.org/stable/c/ae215c5b6422d8eda443b861b124bd1be6969c31
- https://git.kernel.org/stable/c/df22adc7eafc22e651561813c11dc51a796b12ee
- https://git.kernel.org/stable/c/a6b22dbd80926556290ad2243be25218d6956a19
- https://git.kernel.org/stable/c/563a8573047182f550b1e1e030615755cd8c41da
- https://git.kernel.org/stable/c/bb067a99a0356196c0b89a95721985485ebce5a5
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Details
- Published
- 2026-07-25
- Last updated
- 2026-10-20
- State
- Published
- Assigner (CNA)
- Linux
Exploit prediction (EPSS)
0.26%
Probability of exploitation in 30 days
18.2%
Percentile (among all CVEs)
SSVC assessment (CISA)
- Automatable
- No
- Exploitation
- None
- Technical impact
- Total
Weaknesses (CWE)
- CWE-416Use After Free