CVE-2023-54309
kernel: tpm: tpm_vtpm_proxy: fix a race condition in /dev/vtpmx creation
Severity
LowRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · December 30, 2025
Updated · July 22, 2026
Description
A race condition was found in the vTPM proxy driver. The /dev/vtpmx device becomes accessible before the workqueue is initialized, potentially causing memory corruption if accessed during the initialization window.
Statement
Exploitation requires accessing /dev/vtpmx during a narrow window at module load time. This affects virtualization environments using vTPM. The race window is very short, making reliable exploitation difficult.
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 · 4.7CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
CWE-908 · Use of Uninitialized Resource