CVE-2025-38134

usb: acpi: Prevent null pointer dereference in usb_acpi_add_usb4_devlink()

Description

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.

N/A

CVSS

Severity:

EPSS 0.02%

Affected: Linux Linux

References

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

Frequently Asked Questions

What is the severity of CVE-2025-38134?: CVE-2025-38134 has not yet been assigned a CVSS score.
How to fix CVE-2025-38134?: To fix CVE-2025-38134, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2025-38134 being actively exploited in the wild?: As for now, there are no information to confirm that CVE-2025-38134 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2025-38134?: CVE-2025-38134 affects Linux Linux, Linux Linux.

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