Fix priority mask handling in irqchip/gic-v3
Summary
GSD-2022-1002765: irqchip/gic-v3: Fix priority mask handling. Affects Kernel versions >= f32c926651dcd1683f4d896ee52609000a62a3dc, < 7179d484c7a7901b96a17abe04a43a3e12df4580. No fix is published. How to fix ↓
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Background
The Kernel package is a crucial component of the Linux operating system. It provides the core functionality and acts as an interface between the hardware and software layers. The irqchip/gic-v3 module within the Kernel package is responsible for handling interrupts on ARM-based systems. It ensures proper prioritization and distribution of interrupts to the relevant processors. However, a vulnerability has been identified in the priority mask handling mechanism of irqchip/gic-v3.
Vulnerability Detail
The vulnerability in irqchip/gic-v3 arises from a flaw in the priority mask handling. This flaw could potentially allow an attacker to manipulate interrupt priorities and gain unauthorized access to sensitive resources or disrupt the normal functioning of the system. The vulnerability was introduced in version v5.1 of the Linux Kernel and has been fixed in version v5.18.3. It is important to note that the impact and attack plausibility of this vulnerability have not been proven.
How To Fix
No fixed version is published for this vulnerability.
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Workaround
No specific workaround has been mentioned for this vulnerability.
Conclusion
The vulnerability in irqchip/gic-v3 related to priority mask handling poses a potential risk to the security and stability of ARM-based systems running the Linux Kernel. It is recommended to update the Kernel package to version v5.18.3 or later to mitigate this vulnerability. For further assistance or support in vulnerability remediation, please contact DevNack.com.
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FAQ
The impact of this vulnerability is currently unknown as the actual attack plausibility has not been proven. However, if successfully exploited, it could lead to unauthorized access or disruption of system functionality.
You can use Vulert's playground (https://vulert.com/scanner) to check if your system is affected by this vulnerability. Simply upload your package-lock.json file and Vulert will analyze it in real-time to identify any open-source vulnerabilities, including this one.
Yes, a patch for this vulnerability has been included in version v5.18.3 of the Linux Kernel. It is recommended to update to this version or a later one to fix the vulnerability.
The remote exploitability of this vulnerability has not been determined. It is advisable to apply the necessary updates and security measures to mitigate any potential risks.
You can refer to the vulnerability details in the GSD database maintained by the Cloud Security Alliance. The specific vulnerability ID is GSD-2022-1002765. The link to the details is available in the source field of the database entry (https://github.com/cloudsecurityalliance/gsd-database/blob/main/2022/1002xxx/GSD-2022-1002765.json).
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