CVE-2025-38134
MEDIUM EPSS 5.0%
Published Jul 3, 202512mo ago · Modified Jun 17, 20261w ago
5.5 CVSS 3.1
Published Jul 3, 2025 12mo ago
Last Modified Jun 17, 2026 1w ago
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.
CVSS Details
Base Score
Exploitability
Impact
Vector string
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H Attack Vector Local
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality None
Integrity None
Availability High
Threat Intelligence
EPSS Exploit Probability
5.0% percentile
Exploit & Patch Status
No Known Exploit
Patch Available
Weaknesses 1
CWE-476 NULL Pointer Dereference Memory Safety
Affected Products 2
References 3
- git.kernel.org https://git.kernel.org/stable/c/73fb0ec9436ae87bcae067ce35d6cdd72bade86c
- git.kernel.org https://git.kernel.org/stable/c/8fa544bff8466062e42949c93f3e528f4be5624b
- git.kernel.org https://git.kernel.org/stable/c/e3d530173b70514d4390a94f9f979acad689b70a
Remediation
- git.kernel.org https://git.kernel.org/stable/c/73fb0ec9436ae87bcae067ce35d6cdd72bade86c
- git.kernel.org https://git.kernel.org/stable/c/8fa544bff8466062e42949c93f3e528f4be5624b
- git.kernel.org https://git.kernel.org/stable/c/e3d530173b70514d4390a94f9f979acad689b70a