CVE-2026-64408

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 v3 8.8 HIGH

8.8^/10

CVSS v3 : HIGH

Vector :

Exploitability : 2.8 / Impact : 5.9

Attack Vector ADJACENT_NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://git.kernel.org/stable/c/390b5db3ff8745187f094c4e915663b7b1f98944	Patch
https://git.kernel.org/stable/c/46a88784c4c9b96954dd86f747ce93f65efa1302	Patch
https://git.kernel.org/stable/c/551ae773ec64045b4e72099132654887e0270bcc	Patch
https://git.kernel.org/stable/c/563a8573047182f550b1e1e030615755cd8c41da	Patch
https://git.kernel.org/stable/c/a6b22dbd80926556290ad2243be25218d6956a19	Patch
https://git.kernel.org/stable/c/ae215c5b6422d8eda443b861b124bd1be6969c31	Patch
https://git.kernel.org/stable/c/bb067a99a0356196c0b89a95721985485ebce5a5	Patch
https://git.kernel.org/stable/c/df22adc7eafc22e651561813c11dc51a796b12ee	Patch

Configurations

Configuration 1 (hide)

OR	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel:7.2:rc1::::::
	cpe:2.3:o:linux:linux_kernel:7.2:rc2::::::

History

No history.

Information

Published : 2026-07-25 10:17

Updated : 2026-09-04 15:28

NVD link : CVE-2026-64408

Mitre link : CVE-2026-64408

CVE.ORG link : CVE-2026-64408

JSON object : View

Products Affected

linux

linux_kernel

CWE

NVD-CWE-noinfo

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holding the\nchannel lock, then passes its HCI device to register_netdev(). 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