Vulnerability in Kernel: KVM: x86: Handle SRCU initialization failure during page track init
Summary
GSD-2021-1001708: KVM: x86: Handle SRCU initialization failure during page track init. Affects Kernel versions < 4664318f73e496cd22c71b10888e75434a123e23. 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 system resources and facilitates communication between hardware and software. It provides essential functionalities such as process management, memory management, and device drivers. The Kernel is responsible for ensuring the security and stability of the entire system. However, a vulnerability has been identified in the Kernel's KVM (Kernel-based Virtual Machine) module, specifically in the x86 architecture. This vulnerability relates to the handling of SRCU (Synchronizing RCU) initialization failure during page track initialization.
Vulnerability Detail
The vulnerability arises when the SRCU initialization fails during the initialization of page tracking in the KVM module. This failure can lead to potential security risks, although the exact impact and attack plausibility have not been proven yet. The vulnerability has been addressed in the Linux Kernel version v5.14.10 through commit 4664318f73e496cd22c71b10888e75434a123e23. It is crucial to update to this version or a subsequent release to mitigate the vulnerability.
How To Fix
No fixed version is published for this vulnerability.
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Conclusion
In conclusion, a vulnerability has been identified in the Kernel's KVM module related to the handling of SRCU initialization failure during page track initialization. It is crucial to update the Linux Kernel to version v5.14.10 or later to mitigate this vulnerability. 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 system resources and facilitates communication between hardware and software.
KVM (Kernel-based Virtual Machine) is a module in the Linux Kernel that allows the host system to act as a hypervisor and run multiple virtual machines.
SRCU (Synchronizing RCU) is a synchronization mechanism used in the Linux Kernel to allow concurrent read access to shared data structures.
The exact impact and attack plausibility of this vulnerability have not been proven yet. However, it is important to address the vulnerability to ensure the security and stability of the system.
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