What’s Vulnerable › Vulnerabilities

CVE-2023-54309: tpm: tpm_vtpm_proxy: fix a race condition in /dev/vtpmx creation

• Severity: unknown
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2025-12-30 · updated 2026-06-17

Description

In the Linux kernel, the following vulnerability has been resolved: tpm: tpm_vtpm_proxy: fix a race condition in /dev/vtpmx creation /dev/vtpmx is made visible before 'workqueue' is initialized, which can lead to a memory corruption in the worst case scenario. Address this by initializing 'workqueue' as the very first step of the driver initialization.

Affected products

• Linux kernel: 4.8 — fixed in 6.5

How to fix

Upgrade to a fixed version: Linux kernel 6.5. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/04e8697d26613ccea760cf57eb20a5a27f788c0f
• https://git.kernel.org/stable/c/092db954e2c3c5ba6c0ce990c7da72cf8f3b9c51
• https://git.kernel.org/stable/c/509d21f1c4bb9d35d397fca3226165b156a7639f
• https://git.kernel.org/stable/c/86b9820395f226b8f33cbae9599deebf8af1ce72
• https://git.kernel.org/stable/c/99b998fb9d7d2d2d9dbb3e19db2d0ade02f5a604
• https://git.kernel.org/stable/c/9ff7fcb3a2ed0e9b895bb5b4c13872d584a8815b
• https://git.kernel.org/stable/c/e08295290c53a3cf174c236721747a01b9550ae2
• https://git.kernel.org/stable/c/f4032d615f90970d6c3ac1d9c0bce3351eb4445c

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