Vulnerability in RDMA/rtrs-clt package: destroy sysfs after removing session from active list
Summary
UVI-2021-1000359: RDMA/rtrs-clt: destroy sysfs after removing session from active list. Affects Kernel versions >= 6a98d71daea186247005099758af549e6afdd244, < b64415c6b3476cf9fa4d0aea3807065b8403a937. No fix is published. How to fix ↓
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Background
The RDMA/rtrs-clt package is a component of the Linux Kernel ecosystem. It provides functionality for Remote Direct Memory Access (RDMA) and is responsible for managing the sysfs (system file system) after removing a session from the active list. The sysfs is a virtual file system that provides a view of the kernel's device hierarchy and allows userspace applications to interact with device drivers and other kernel subsystems. This vulnerability affects versions of the Linux Kernel from v5.8 to v5.10.36.
Vulnerability Detail
The vulnerability in the RDMA/rtrs-clt package occurs when the sysfs is not properly destroyed after removing a session from the active list. This can potentially lead to a variety of security issues, although the exact impact and attack plausibility have not been proven. Attackers may be able to exploit this vulnerability to gain unauthorized access, escalate privileges, or cause denial-of-service conditions. The vulnerability was introduced in version v5.8 of the Linux Kernel and has been fixed in version v5.10.37.
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. However, users can mitigate the risk by ensuring that their systems are running an updated version of the Linux Kernel. Additionally, it is recommended to follow security best practices such as restricting access to vulnerable systems and implementing network segmentation.
Conclusion
The vulnerability in the RDMA/rtrs-clt package, which involves the improper destruction of sysfs after removing a session from the active list, can potentially lead to various security issues. It is recommended to update the Linux Kernel to version v5.10.37 or later to fix this vulnerability. Users can obtain the latest version of the kernel source code and compile it, or wait for their Linux distribution to release an updated package. For further support on vulnerability remediation, please contact DevNack.com.
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FAQ
The RDMA/rtrs-clt package is a component of the Linux Kernel ecosystem that provides functionality for Remote Direct Memory Access (RDMA). It is responsible for managing the sysfs after removing a session from the active list.
The sysfs is a virtual file system in Linux that provides a view of the kernel's device hierarchy. It allows userspace applications to interact with device drivers and other kernel subsystems.
The exact impact of this vulnerability is not yet proven. However, it could potentially allow attackers to gain unauthorized access, escalate privileges, or cause denial-of-service conditions.
To fix this vulnerability, it is recommended to update the Linux Kernel to version v5.10.37 or later. Users can obtain the latest version of the kernel source code from the official Linux Kernel repository and compile it according to the provided instructions.
There is no specific workaround mentioned for this vulnerability. However, users can mitigate the risk by ensuring that their systems are running an updated version of the Linux Kernel and following security best practices.
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