CVE-2026-45871
kernel: tpm: st33zp24: Fix missing cleanup on get_burstcount() error
Severity
LowRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · May 27, 2026
Updated · June 27, 2026
Description
A flaw was found in the Linux kernel's Trusted Platform Module (TPM) subsystem. When the get_burstcount() function encounters an error, the st33zp24 driver fails to release a previously acquired resource. This oversight can lead to resource exhaustion, potentially allowing a local attacker to cause a Denial of Service (DoS) by making the TPM device unavailable.
CVSS score applicability
The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.
Mitigation
No mitigation is specified in collected source.
CVSS / CWE
CVSS 3.1 · 5.5CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CWE-772 · Missing Release of Resource after Effective Lifetime