USBIP Refcount Leak Vulnerability in Linux Kernel
Summary
GSD-2022-1003870: usb: usbip: fix a refcount leak in stub_probe(). Affects Kernel versions >= 3ff67445750a84de67faaf52c6e1895cb09f2c56, < 247d3809e45a34d9e1a3a2bb7012e31ed8b46031. No fix is published. How to fix ↓
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Background
The Linux Kernel is the core component of the Linux operating system, responsible for managing system resources and providing essential functionalities. USBIP is a kernel driver that allows remote USB devices to be used over a network. It enables users to share USB devices between multiple machines, providing flexibility and convenience. However, a vulnerability has been discovered in the USBIP driver that can lead to a refcount leak, potentially impacting the stability and security of the system.
Vulnerability Detail
The USBIP driver in the Linux Kernel suffers from a refcount leak vulnerability in the stub_probe() function. This vulnerability was introduced in version v3.19 and fixed in version v4.19.247. An attacker could exploit this vulnerability to cause a refcount leak, which may result in resource exhaustion and system instability. The impact and attack plausibility of this vulnerability have not been proven yet.
How To Fix
No fixed version is published for this vulnerability.
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Workaround
No workaround has been provided for this vulnerability.
Conclusion
The USBIP refcount leak vulnerability in the Linux Kernel can lead to resource exhaustion and system instability. It is crucial to update the Linux Kernel to version v4.19.247 or later to mitigate this vulnerability. For further support and assistance with vulnerability remediation, please contact DevNack.com.
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FAQ
The USBIP driver is a kernel component that allows remote USB devices to be used over a network, enabling users to share USB devices between multiple machines.
A refcount leak occurs when the reference count of a resource is not properly managed, leading to a gradual depletion of system resources and potential instability.
The impact of this vulnerability can include resource exhaustion, system instability, and potential security risks.
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You can find more information about this vulnerability in the Open Source Vulnerability Database at https://github.com/cloudsecurityalliance/gsd-database/blob/main/2022/1003xxx/GSD-2022-1003870.json
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