CVE-2025-39861

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: vhci: Prevent use-after-free by removing debugfs files early Move the creation of debugfs files into a dedicated function, and ensure they are explicitly removed during vhci_release(), before associated data structures are freed. Previously, debugfs files such as "force_suspend", "force_wakeup", and others were created under hdev->debugfs but not removed in vhci_release(). Since vhci_release() frees the backing vhci_data structure, any access to these files after release would result in use-after-free errors. Although hdev->debugfs is later freed in hci_release_dev(), user can access files after vhci_data is freed but before hdev->debugfs is released.

CVSS v3 7.8 HIGH

7.8^/10

CVSS v3 : HIGH

Vector :

Exploitability : 1.8 / Impact : 5.9

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://git.kernel.org/stable/c/1503756fffe76d5aea2371a4b8dee20c3577bcfd	Patch
https://git.kernel.org/stable/c/28010791193a4503f054e8d69a950ef815deb539	Patch
https://git.kernel.org/stable/c/7cc08f2f127b9a66f46ea918e34353811a7cb378	Patch
https://git.kernel.org/stable/c/bd75eba88e88d7b896b0c737b02a74a12afc235f	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:6.17:rc1::::::
	cpe:2.3:o:linux:linux_kernel:6.17:rc2::::::
	cpe:2.3:o:linux:linux_kernel:6.17:rc3::::::
	cpe:2.3:o:linux:linux_kernel:6.17:rc4::::::

History

No history.

Information

Published : 2025-09-19 16:15

Updated : 2026-01-14 20:16

NVD link : CVE-2025-39861

Mitre link : CVE-2025-39861

CVE.ORG link : CVE-2025-39861

JSON object : View

Products Affected

linux

linux_kernel

CWE

CWE-416

Use After Free

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