RISC-V Kernel: Fast Call Path of crash_kexec() Vulnerability
Summary
GSD-2022-1005950: RISC-V: Add fast call path of crash_kexec(). Affects Kernel versions < 814d83c5e1272ad86d364bad71d0f4236a4a555e. No fix is published. How to fix ↓
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Background
The RISC-V Kernel is a component of the Linux operating system that supports the RISC-V architecture. It provides essential functionality for managing system resources, handling hardware interactions, and facilitating communication between software components. The crash_kexec() function is a critical part of the kernel that is responsible for initiating a kernel crash dump in the event of a system crash. This allows for analysis and debugging of the crash to identify the root cause and potential fixes.
Vulnerability Detail
The RISC-V Kernel is vulnerable to a security issue related to the fast call path of the crash_kexec() function. The vulnerability allows an attacker to potentially exploit the crash_kexec() function to execute arbitrary code or trigger a denial-of-service condition. The impact and attack plausibility of this vulnerability have not been proven yet. It is important to note that this vulnerability has been fixed in the Linux Kernel version v5.4.211 by commit 814d83c5e1272ad86d364bad71d0f4236a4a555e.
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 RISC-V Kernel is vulnerable to a security issue related to the fast call path of the crash_kexec() function. It is recommended to update the kernel to version v5.4.211 or later to mitigate this vulnerability. For further support on vulnerability remediation, please contact DevNack.com.
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FAQ
The impact of this vulnerability is not yet proven, but it has the potential to allow an attacker to execute arbitrary code or cause a denial-of-service condition.
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 provide real-time monitoring and alerts for open-source vulnerabilities, including this one.
Yes, a patch is available in the Linux Kernel version v5.4.211. It is recommended to update to this version or a later one to fix the vulnerability.
There are no known exploits for this vulnerability at the moment. However, it is always important to promptly apply security patches to mitigate potential risks.
You can find more information about this vulnerability in the GSD-2022-1005950 entry of the GSD Database maintained by the Cloud Security Alliance. The source link is available at https://github.com/cloudsecurityalliance/gsd-database/blob/main/2022/1005xxx/GSD-2022-1005950.json.
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