SB20260528207 - Improper resource shutdown or release in Linux kernel tpm st33zp24 driver

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Main Vulnerability Database SB20260528207

SB20260528207 - Improper resource shutdown or release in Linux kernel tpm st33zp24 driver

Published: May 28, 2026

Security Bulletin ID SB20260528207
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) Improper resource shutdown or release (CVE-ID: CVE-2026-45871)

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:H/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 st33zp24_send() in the st33zp24 TPM driver when handling a get_burstcount() timeout error. A local user can trigger the error condition to cause a denial of service.

The issue occurs because locality acquired earlier is not released when get_burstcount() returns -EBUSY on timeout.


Remediation

Install update from vendor's website.

References