SB20260507115 - Improper resource shutdown or release in Linux kernel usb pvrusb2 driver

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Main Vulnerability Database SB20260507115

SB20260507115 - Improper resource shutdown or release in Linux kernel usb pvrusb2 driver

Published: May 7, 2026

Security Bulletin ID SB20260507115
CSH Severity
Low
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Local 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-2026-43223)

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

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


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

The vulnerability exists due to improper resource shutdown or release in pvr2_send_request_ex() when submitting USB request blocks. A local user can trigger a failure after a write URB has been submitted but before the corresponding read URB is submitted to cause a denial of service.

The issue is triggered when read URB submission fails while the write URB remains active and is later reused.


Remediation

Install update from vendor's website.

References