CVE-2025-38134

In the Linux kernel, the following vulnerability has been resolved: usb: acpi: Prevent null pointer dereference in usb_acpi_add_usb4_devlink() As demonstrated by the fix for update_port_device_state, commit 12783c0b9e2c ("usb: core: Prevent null pointer dereference in update_port_device_state"), usb_hub_to_struct_hub() can return NULL in certain scenarios, such as during hub driver unbind or teardown race conditions, even if the underlying usb_device structure exists. Plus, all other places that call usb_hub_to_struct_hub() in the same file do check for NULL return values. If usb_hub_to_struct_hub() returns NULL, the subsequent access to hub->ports[udev->portnum - 1] will cause a null pointer dereference.

CVSS v3 5.5 MEDIUM

5.5^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 1.8 / Impact : 3.6

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://git.kernel.org/stable/c/73fb0ec9436ae87bcae067ce35d6cdd72bade86c	Patch
https://git.kernel.org/stable/c/8fa544bff8466062e42949c93f3e528f4be5624b	Patch
https://git.kernel.org/stable/c/e3d530173b70514d4390a94f9f979acad689b70a	Patch

Configurations

Configuration 1 (hide)

OR	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::

History

20 Nov 2025, 20:11

Type	Values Removed	Values Added
CWE		CWE-476
First Time		Linux linux Kernel Linux
CVSS	v2 : ~~unknown~~ v3 : ~~unknown~~	v2 : unknown v3 : 5.5
CPE		cpe:2.3:o:linux:linux_kernel::::::::
References	~~() https://git.kernel.org/stable/c/73fb0ec9436ae87bcae067ce35d6cdd72bade86c -~~	() https://git.kernel.org/stable/c/73fb0ec9436ae87bcae067ce35d6cdd72bade86c - Patch
References	~~() https://git.kernel.org/stable/c/8fa544bff8466062e42949c93f3e528f4be5624b -~~	() https://git.kernel.org/stable/c/8fa544bff8466062e42949c93f3e528f4be5624b - Patch
References	~~() https://git.kernel.org/stable/c/e3d530173b70514d4390a94f9f979acad689b70a -~~	() https://git.kernel.org/stable/c/e3d530173b70514d4390a94f9f979acad689b70a - Patch

Information

Published : 2025-07-03 09:15

Updated : 2025-11-20 20:11

NVD link : CVE-2025-38134

Mitre link : CVE-2025-38134

CVE.ORG link : CVE-2025-38134

JSON object : View

Products Affected

linux

linux_kernel

CWE

CWE-476

NULL Pointer Dereference

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