KVM: PPC: Book3S HV: Fix stack handling in idle_kvm_start_guest()
Summary
GSD-2021-1002046: KVM: PPC: Book3S HV: Fix stack handling in idle_kvm_start_guest(). Affects Kernel versions >= 10d91611f426d4bafd2a83d966c36da811b2f7ad, < fbd724c49bead048ae9fc1a5b7bff2fb3e54f855. No fix is published. How to fix ↓
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Background
The Kernel package is a critical component of the Linux operating system. It provides the core functionality and interfaces for various hardware devices, system resources, and software components. The KVM (Kernel-based Virtual Machine) subsystem within the Kernel package enables the hosting of virtual machines on Linux systems. The PowerPC (PPC) architecture is supported by the Book3S HV implementation of KVM. This vulnerability specifically affects the stack handling in the idle_kvm_start_guest() function within the Book3S HV code.
Vulnerability Detail
The idle_kvm_start_guest() function in the Book3S HV implementation of KVM for PowerPC architecture has a stack handling issue. This vulnerability could potentially be exploited by an attacker to execute arbitrary code or cause a denial-of-service condition. The specific technical details of the stack handling issue are not provided in the vulnerability report.
How To Fix
No fixed version is published for this vulnerability.
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Workaround
No workaround is mentioned in the vulnerability report.
Conclusion
In conclusion, the KVM: PPC: Book3S HV: Fix stack handling in idle_kvm_start_guest() vulnerability affects the Book3S HV implementation of KVM for PowerPC architecture in the Linux Kernel package. It is recommended to update the Kernel package to version v5.10.76 or later to fix this vulnerability. No workaround is mentioned in the vulnerability report. If you have further questions or need assistance with vulnerability remediation, you can reach out to DevNack.com.
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FAQ
This vulnerability could potentially allow an attacker to execute arbitrary code or cause a denial-of-service condition on a system running the affected version of the Linux Kernel with the Book3S HV implementation of KVM for PowerPC architecture.
You can use the Vulert Playground at Vulert Scanner to check if your system is affected by this vulnerability. Simply upload your package-lock.json file to the playground and it will alert you in real-time if your system is vulnerable.
The vulnerability report does not mention any known exploits. However, it is always recommended to apply security patches and updates promptly to mitigate the risk of potential exploits.
The vulnerability report does not provide specific details on the conditions required for exploitation. It is advisable to assume that any system running the affected version of the Linux Kernel with the Book3S HV implementation of KVM for PowerPC architecture is potentially vulnerable.
For more details on this vulnerability, you can refer to the vulnerability report in the GSD database. The link to the report is provided in the 'source' field of the 'database_specific' section in the vulnerability details.
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