EFI: Do not import certificates from UEFI Secure Boot for T2 Macs (Kernel)
Summary
GSD-2022-1003502: efi: Do not import certificates from UEFI Secure Boot for T2 Macs. Affects Kernel versions < c072cab98bac11f6ef9db640fb51834d9552e2e6. No fix is published. How to fix ↓
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Background
The Kernel is a fundamental component of the Linux operating system that manages the system's resources and facilitates communication between hardware and software. It plays a crucial role in ensuring the stability and security of the system. The EFI (Extensible Firmware Interface) is a specification that defines the interface between the operating system and the firmware on the computer. UEFI Secure Boot is a feature that ensures only trusted software is executed during the boot process. T2 Macs are Macintosh computers equipped with the Apple T2 Security Chip, which provides enhanced security features. This vulnerability specifically affects T2 Macs running Linux Kernel.
Vulnerability Detail
The vulnerability involves the improper importation of certificates from UEFI Secure Boot for T2 Macs in the EFI module of the Linux Kernel. Importing these certificates can lead to potential security risks and compromise the integrity of the system. The impact and attack plausibility of this vulnerability have not been proven yet. However, it is crucial to address this issue to prevent any potential security breaches.
How To Fix
No fixed version is published for this vulnerability.
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Workaround
There is no specific workaround mentioned for this vulnerability.
Conclusion
The EFI vulnerability in the Linux Kernel, which involves the improper importation of certificates from UEFI Secure Boot for T2 Macs, poses a potential security risk to the integrity of the system. To mitigate this risk, it is crucial to update the Linux Kernel to version v5.10.121 or later. For further support and assistance in vulnerability remediation, please contact DevNack.com.
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FAQ
The impact of this vulnerability is not yet proven. However, it has the potential to compromise the security and integrity of T2 Macs running Linux Kernel.
You can use tools like Vulert Playground (https://vulert.com/scanner) to check if your system is affected by this vulnerability. Vulert Playground allows you to analyze your application's manifest file, such as package-lock.json, to identify open-source vulnerabilities in real-time.
There are no specific temporary measures mentioned for this vulnerability. It is recommended to update the Linux Kernel to the fixed version as soon as possible.
Yes, all T2 Macs running Linux Kernel are potentially affected by this vulnerability. It is important to update the Kernel to mitigate the risk.
You can find more information about this vulnerability in the Linux Kernel's Git repository at https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/. The specific commit c072cab98bac11f6ef9db640fb51834d9552e2e6 addresses this vulnerability.
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