Incorrect Page Free Bug in tee: optee
Summary
GSD-2021-1002797: tee: optee: Fix incorrect page free bug. Affects Kernel versions >= 3c712f14d8a9354a8807c15c64c8dd334499cc42, < 806142c805cacd098e61bdc0f72c778a2389fe4a. No fix is published. How to fix ↓
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Background
The tee: optee package is a component of the Linux Kernel that provides support for Trusted Execution Environments (TEEs). TEEs are isolated execution environments that ensure the confidentiality and integrity of sensitive data. The optee driver in the tee subsystem is responsible for managing communication between the kernel and the TEE. This vulnerability affects versions of the Linux Kernel from v5.4.140 to v5.4.168.
Vulnerability Detail
The vulnerability in tee: optee is related to an incorrect page free bug. This bug allows an attacker to free an incorrect page, leading to potential memory corruption and privilege escalation attacks. The impact and attack plausibility of this vulnerability have not been proven yet. However, if successfully exploited, an attacker could gain elevated privileges and compromise the security of the TEE environment.
How To Fix
No fixed version is published for this vulnerability.
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Workaround
There is no specific workaround provided for this vulnerability. Users are advised to update their Linux Kernel to the latest version as mentioned in the 'how_to_fix' section.
Conclusion
The incorrect page free bug in tee: optee can potentially lead to memory corruption and privilege escalation attacks. It is important to update the Linux Kernel to the latest version to mitigate this vulnerability. For further support on vulnerability remediation, please contact DevNack.com.
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FAQ
tee: optee is a component of the Linux Kernel that provides support for Trusted Execution Environments (TEEs). TEEs are isolated execution environments that ensure the confidentiality and integrity of sensitive data.
If successfully exploited, this vulnerability can lead to memory corruption and privilege escalation attacks, compromising the security of the TEE environment.
To fix this vulnerability, update your Linux Kernel to the latest version as mentioned in the 'how_to_fix' section.
No specific workarounds are provided for this vulnerability. Updating the Linux Kernel to the latest version is the recommended solution.
Regularly check for security updates and apply them promptly. Keeping the system up to date with the latest patches and fixes is crucial for maintaining security.
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