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.
Affected products
linux: linux kernel
References8
- git.kernel.org/stable/c/390b5db3ff8745187f094c4e915663b7b1f98944 Patch
- git.kernel.org/stable/c/46a88784c4c9b96954dd86f747ce93f65efa1302 Patch
- git.kernel.org/stable/c/551ae773ec64045b4e72099132654887e0270bcc Patch
- git.kernel.org/stable/c/563a8573047182f550b1e1e030615755cd8c41da Patch
- git.kernel.org/stable/c/a6b22dbd80926556290ad2243be25218d6956a19 Patch
- git.kernel.org/stable/c/ae215c5b6422d8eda443b861b124bd1be6969c31 Patch
- git.kernel.org/stable/c/bb067a99a0356196c0b89a95721985485ebce5a5 Patch
- git.kernel.org/stable/c/df22adc7eafc22e651561813c11dc51a796b12ee Patch
Metrics
- CVSS 3.1
-
8.8
HIGH
Score source: CNA
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - EPSS — exploit probability
- 0% percentile: 18 · as of 14 November 2026
- CWE
- CWE-416
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