Memory Leak in Renesas-rpc-if in Linux Kernel
Summary
GSD-2022-1000966: memory: renesas-rpc-if: fix platform-device leak in error path. Affects Kernel versions >= ca7d8b980b67f133317525c4273e144116ee1ae5, < 66b9b707ea4dcafca92b6261c6924652914e3b73. No fix is published. How to fix ↓
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Background
The Renesas-rpc-if is a memory management component in the Linux Kernel. It provides an interface for communication between the Renesas RPC (Remote Procedure Call) protocol and the platform devices. The RPC protocol is commonly used in embedded systems for inter-process communication. The vulnerability in the Renesas-rpc-if component leads to a memory leak in the error path, which can result in resource exhaustion and potential system instability.
Vulnerability Detail
The vulnerability in the Renesas-rpc-if component of the Linux Kernel allows for a memory leak in the error path. When an error occurs during the execution of the RPC protocol, the component fails to properly release allocated resources, leading to a memory leak. This can result in the depletion of available memory, potentially causing system instability and denial of service. The vulnerability was introduced in version v5.9 of the Linux Kernel and has been fixed in version v5.17.4.
How To Fix
No fixed version is published for this vulnerability.
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Workaround
There is no specific workaround provided for this vulnerability. The recommended solution is to update the Linux Kernel to the fixed version.
Conclusion
The memory leak vulnerability in the Renesas-rpc-if component of the Linux Kernel can lead to resource exhaustion and system instability. It is recommended to update the Linux Kernel to version v5.17.4 or later to fix this vulnerability. For further support on vulnerability remediation, please contact DevNack.com.
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FAQ
The vulnerability can lead to a memory leak, potentially causing resource exhaustion and system instability.
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 and the Vulert Playground will analyze it for any known vulnerabilities.
At the time of this report, there is no known exploit for this vulnerability. However, it is important to apply the fix as soon as possible to mitigate any potential risks.
The vulnerability itself does not provide remote code execution capabilities. However, if an attacker can trigger the error path in the Renesas-rpc-if component, they may be able to cause a memory leak remotely, potentially leading to denial of service.
The recommended solution is to update the Linux Kernel to the fixed version. However, if updating is not feasible, you can consider implementing custom patches or workarounds specific to your system. It is important to thoroughly test any custom solutions to ensure they do not introduce additional vulnerabilities.
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