PT-2025-27720 · Linux+5 · Linux Kernel+5

Published 2025-04-17 · Updated 2026-03-04 · CVE-2025-38134

Positive Technologies (AI Summary)

CVSS v2.0

6.0

Medium

Base vector

AV:L/AC:H/Au:S/C:C/I:C/A:C

Name of the Vulnerable Software and Affected Versions: Linux kernel (affected versions not specified)

Description: A null pointer dereference issue has been identified in the Linux kernel, specifically in the usb acpi add usb4 devlink() function. This issue arises when usb hub to struct hub() returns NULL, which can occur during hub driver unbind or teardown race conditions, even if the underlying usb device structure exists. The subsequent access to hub->ports[udev->portnum - 1] will cause a null pointer dereference.

Recommendations: At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

NULL Pointer Dereference

Weakness Enumeration

CWE-476

Related Identifiers

BDU:2025-09627

CVE-2025-38134

OPENSUSE-SU-2025:20081-1

SUSE-SU-2025:21074-1

SUSE-SU-2025:21139-1

SUSE-SU-2025:21179-1

USN-7769-1

USN-7769-2

USN-7769-3

USN-7770-1

USN-7771-1

USN-7789-1

USN-7789-2

Affected Products

Astra Linux

Linuxmint

Linux Kernel

Red Os

Suse

Ubuntu

References · 1471

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/38xxx/CVE-2025-38134.json · Exploit
• https://ubuntu.com/security/CVE-2025-38062 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-38047 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-38291 · Vendor Advisory
• https://osv.dev/vulnerability/USN-7770-1 · Vendor Advisory
• https://git.kernel.org/stable/c/8fa544bff8466062e42949c93f3e528f4be5624b · Patch
• https://ubuntu.com/security/CVE-2025-38099 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-38140 · Vendor Advisory
• https://git.kernel.org/stable/c/73fb0ec9436ae87bcae067ce35d6cdd72bade86c · Patch
• https://osv.dev/vulnerability/openSUSE-SU-2025:20081-1 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-38299 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-38287 · Vendor Advisory
• https://osv.dev/vulnerability/USN-7769-3 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-38071 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-38135 · Vendor Advisory