Vulnerability in Kernel: selinux: add proper NULL termination to the secclass_map permissions
Summary
GSD-2021-1000306: selinux: add proper NULL termination to the secclass_map permissions. Affects Kernel versions >= ec27c3568a34c7fe5fcf4ac0a354eda77687f7eb, < 336dc1d637f3c889785a718fe791580e01bc2a93. No fix is published. How to fix ↓
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Background
The Kernel is a critical component of the Linux operating system that manages communication between hardware and software. It provides essential functions and services to enable the proper functioning of the system. SELinux (Security-Enhanced Linux) is a security module within the Kernel that enforces access control policies to protect the system from unauthorized access and potential security threats. It uses a set of security classes and permissions defined in the secclass_map to determine access rights for processes and resources.
Vulnerability Detail
The vulnerability identified in the Kernel's SELinux module is related to the secclass_map permissions. The secclass_map is a data structure that maps security classes to permissions. However, it lacks proper NULL termination, which can lead to potential security issues. An attacker may exploit this vulnerability to bypass access control restrictions and gain unauthorized access to resources or execute malicious code. The impact and attack plausibility of this vulnerability have not been proven yet.
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. It is advised to update the Kernel to the latest version as mentioned in the 'how_to_fix' section.
Conclusion
The vulnerability in the Kernel's SELinux module related to the secclass_map permissions can be mitigated by updating the Kernel to version v5.12.4 or later. This update ensures proper NULL termination and reduces the risk of unauthorized access and potential security threats. For further support on vulnerability remediation, please contact DevNack.com.
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FAQ
The Kernel is a critical component of the Linux operating system that manages communication between hardware and software.
SELinux (Security-Enhanced Linux) is a security module within the Kernel that enforces access control policies to protect the system from unauthorized access and potential security threats.
The secclass_map permissions are a set of security classes and permissions defined in SELinux that determine access rights for processes and resources.
The impact of this vulnerability is not yet proven. However, it could potentially allow attackers to bypass access control restrictions and gain unauthorized access to resources or execute malicious code.
To fix this vulnerability, update the Linux Kernel to version v5.12.4 or later, which includes the necessary fix for the secclass_map permissions.
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