Vulnerability in Kernel Package: irqchip/gic-v3
Summary
GSD-2021-1000115: irqchip/gic-v3: Do not enable irqs when handling spurious interrups. Affects Kernel versions >= 3f1f3234bc2db1c16b9818b9a15a5d58ad45251c, < ea817ac1014c04f47885532b55f5d0898deadfba. No fix is published. How to fix ↓
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Background
The Kernel package is a crucial component of the Linux operating system, responsible for managing the system's core functionality and providing an interface between hardware and software. It includes various subsystems, such as the irqchip/gic-v3, which handles interrupt requests. The irqchip/gic-v3 subsystem is specifically designed for systems using the ARM Generic Interrupt Controller (GIC) version 3. This vulnerability affects the irqchip/gic-v3 subsystem and can potentially lead to security issues.
Vulnerability Detail
The vulnerability in irqchip/gic-v3 involves enabling interrupts when handling spurious interrupts. Spurious interrupts are interrupts that are falsely triggered by the system. By enabling interrupts during the handling of spurious interrupts, an attacker could potentially exploit this behavior to gain unauthorized access or disrupt the system. The impact and attack plausibility of this vulnerability have not been proven yet. The vulnerability was introduced in version v5.1 of the Linux Kernel by commit 3f1f3234bc2db1c16b9818b9a15a5d58ad45251c and has been fixed in version v5.11.20 by commit ea817ac1014c04f47885532b55f5d0898deadfba.
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 vulnerability in the Kernel package's irqchip/gic-v3 subsystem, which involves enabling interrupts when handling spurious interrupts, has the potential to lead to unauthorized access or system disruption. It is crucial to update the Linux Kernel package to version v5.11.20 or later to mitigate this vulnerability. Regularly updating the Kernel package is essential for maintaining the security of the system. For further support on vulnerability remediation, you can reach out to DevNack.com.
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FAQ
The impact of this vulnerability is not yet proven. However, if successfully exploited, it could lead to unauthorized access or system disruption.
You can use tools like Vulert (https://vulert.com) to check if your system is affected by this vulnerability. Vulert uses a manifest file like package-lock.json to monitor and alert in real-time for open-source vulnerabilities in the software.
There is no known exploit for this vulnerability at the moment. However, it is always recommended to apply security patches and updates to mitigate potential risks.
The specific prerequisites for exploiting this vulnerability are not mentioned in the provided information.
You can refer to the provided references link for more detailed information about this vulnerability.
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