SB20261022371 - Use-after-free in Linux kernel usb dwc2 driver

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Main Vulnerability Database SB20261022371

SB20261022371 - Use-after-free in Linux kernel usb dwc2 driver

Published: October 22, 2026

Security Bulletin ID SB20261022371
CSH Severity
Low
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Local access
Highest impact Denial of service

Breakdown by Severity

Low 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 vulnerability.


1) Use-after-free (CVE-ID: CVE-2026-98762)

CWE-ID: CWE-416 - Use After Free

CVSSv4: 5.7 [CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]


The vulnerability allows a local user to potentially cause a denial of service through a kernel crash.

The vulnerability exists due to a use-after-free in the Linux kernel DWC2 USB host controller driver when host-owned state is freed before the wakeup timer callback has been synchronized and prevented from rearming. A local user can potentially exploit the race between dwc2_wakeup_detected() and host resource cleanup to access freed memory and cause a denial of service.


Remediation

Install update from vendor's website.

References