Vulnerability in Kernel: misc: fastrpc: fix list iterator in fastrpc_req_mem_unmap_impl
Summary
GSD-2022-1002652: misc: fastrpc: fix list iterator in fastrpc_req_mem_unmap_impl. Affects Kernel versions >= 5c1b97c7d7b736e6439af4f43a65837bc72f56c1, < 2d12905aad462383f4e7a5fdb024d2b7ae2d10cf. No fix is published. How to fix ↓
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Background
The Kernel is a crucial component of the Linux operating system, responsible for managing system resources and facilitating communication between hardware and software. It provides essential functionalities and services to ensure the proper functioning of the system. One of its components, the fastrpc module, is used for fast remote procedure calls (RPC) between different processes. This module allows efficient communication and data transfer between processes. However, a vulnerability has been identified in the fastrpc_req_mem_unmap_impl function, which can lead to potential security risks.
Vulnerability Detail
The vulnerability in the fastrpc_req_mem_unmap_impl function within the Kernel's fastrpc module allows for a list iterator issue. This vulnerability was introduced in version v5.18 of the Linux Kernel by commit 5c1b97c7d7b736e6439af4f43a65837bc72f56c1 and was fixed in version v5.18.3 by commit 2d12905aad462383f4e7a5fdb024d2b7ae2d10cf. The impact and attack plausibility of this vulnerability have not been proven yet. However, if exploited, it could potentially lead to unauthorized access, privilege escalation, or denial of service. The specific technical details of the vulnerability are not provided in the available information.
How To Fix
No fixed version is published for this vulnerability.
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Conclusion
The vulnerability in the fastrpc_req_mem_unmap_impl function of the Kernel's fastrpc module can potentially lead to security risks such as unauthorized access, privilege escalation, or denial of service. It is crucial to update the Linux Kernel to version v5.18.3 or later to fix this vulnerability. For more information and assistance, you can contact Devnack at DevNack.com.
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FAQ
The impact of this vulnerability could potentially include unauthorized access, privilege escalation, or denial of service. However, the actual impact and attack plausibility have not been proven yet.
You can use the Vulert Playground at Vulert Scanner to check if your system is affected by this vulnerability. Vulert monitors and alerts in real-time for open-source vulnerabilities, using just a manifest file like package-lock.json.
No specific workaround is mentioned in the available information. It is recommended to update the Linux Kernel to the latest stable version to fix the vulnerability.
You can refer to the commit 2d12905aad462383f4e7a5fdb024d2b7ae2d10cf in the Linux Kernel's Git repository at https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/. This commit includes the fix for the list iterator issue in the fastrpc_req_mem_unmap_impl function.
For further support on vulnerability remediation, you can reach out to Devnack at info@devnack.com.
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