Incorrect Page Free Bug in tee: optee

Kernel Updated 02 Oct 2025

Summary

30/12/2021

Disclosed on

N/A

Severity

No i

Fix available

Unrated

Severity

Not published

CVSS Score

GSD-2021-1002841: tee: optee: Fix incorrect page free bug. Affects Kernel versions >= ec185dd3ab257dc2a60953fdf1b6622f524cc5b7, < 91e94e42f6fc49635f1a16d8ae3f79552bcfda29. No fix is published. How to fix ↓

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Background

The tee: optee package is a component of the Linux Kernel ecosystem. It provides a Trusted Execution Environment (TEE) for secure execution of code on ARM-based systems. The TEE ensures the isolation and protection of sensitive data and processes. However, a vulnerability has been discovered in the package that could potentially lead to security breaches and unauthorized access to sensitive information.

Vulnerability Detail

The vulnerability in tee: optee is related to an incorrect page free bug. This bug allows an attacker to free a page that is still in use, leading to memory corruption and potential exploitation. If successfully exploited, an attacker could gain unauthorized access to sensitive data, execute arbitrary code, or cause a denial-of-service (DoS) condition. The vulnerability was introduced in version v5.14 of the Linux Kernel and has been fixed in version v5.15.12.

How To Fix

No fixed version is published for this vulnerability.

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Workaround

There is no specific workaround available for this vulnerability. It is crucial to update to the fixed version of the Linux Kernel to ensure the security of the system.

Conclusion

The incorrect page free bug in tee: optee poses a significant security risk, potentially allowing unauthorized access to sensitive data and execution of arbitrary code. It is crucial to update the Linux Kernel to version v5.15.12 or later to mitigate this vulnerability. For further support and assistance in vulnerability remediation, please contact DevNack.com.

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FAQ

What is tee: optee?

tee: optee is a Trusted Execution Environment (TEE) component of the Linux Kernel ecosystem. It provides a secure execution environment for ARM-based systems.

What is the impact of this vulnerability?

The vulnerability allows an attacker to free a page that is still in use, leading to memory corruption and potential exploitation. This could result in unauthorized access to sensitive data, arbitrary code execution, or a denial-of-service (DoS) condition.