SB20260727242 - Improper resource shutdown or release in Linux kernel usb misc driver

CSH
CYBERSECURITY HELP
Sign In REGISTER

Main Vulnerability Database SB20260727242

SB20260727242 - Improper resource shutdown or release in Linux kernel usb misc driver

Published: July 27, 2026

Security Bulletin ID SB20260727242
CSH Severity
Low
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Physical access
Highest impact Partial DoS

Breakdown by Severity

Low 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 vulnerability.


1) Improper resource shutdown or release (CVE-ID: CVE-2026-64338)

CWE-ID: CWE-404 - Improper Resource Shutdown or Release

CVSSv4: CVSS:4.0/AV:P/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear


The vulnerability allows a local attacker to cause a denial of service.

The vulnerability exists due to improper resource shutdown or release in uss720_probe() when handling a probe failure after reading the 1284 register. A local attacker can trigger a failed probe with a device that causes get_1284_register() to fail to cause a denial of service.

The issue can leave a registered parport device behind with stale private_data after the common cleanup path releases the associated private data and USB device reference.


Remediation

Install update from vendor's website.

References