Refcount Leak in fsl_rio_setup in Kernel
Summary
GSD-2022-1003036: powerpc/fsl_rio: Fix refcount leak in fsl_rio_setup. Affects Kernel versions >= abc3aeae3aaa5c319d02f12649e17ea5929999aa, < c70dd353d37158e06bf8d450d4b31a7091609924. No fix is published. How to fix ↓
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Background
The Kernel is a critical component of the Linux operating system that provides core functionalities and interfaces with hardware devices. It is responsible for managing system resources, including memory, processes, and input/output operations. The fsl_rio_setup function in the powerpc/fsl_rio module is used to configure the RapidIO subsystem on Freescale PowerPC platforms. RapidIO is a high-performance interconnect technology commonly used in embedded systems. However, a refcount leak vulnerability has been identified in the fsl_rio_setup function, which can lead to resource exhaustion and potential system instability.
Vulnerability Detail
The refcount leak vulnerability in fsl_rio_setup arises from a failure to properly release resources when an error occurs during the setup process. This can result in a gradual depletion of system resources, such as memory or file descriptors, leading to a denial-of-service condition or other unpredictable behavior. An attacker may be able to exploit this vulnerability to exhaust system resources and cause a system crash or disrupt normal operations. The vulnerability was introduced in version v3.3 of the Linux Kernel and has been fixed in version v5.17.14.
How To Fix
No fixed version is published for this vulnerability.
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Conclusion
The refcount leak vulnerability in fsl_rio_setup can lead to resource exhaustion and potential system instability. It is crucial to update the Linux Kernel to version v5.17.14 or later to mitigate this vulnerability. Users can also utilize the Vulert Playground (https://vulert.com/scanner) to assess their system's vulnerability status and receive real-time alerts for open-source vulnerabilities. For further support on vulnerability remediation, please contact DevNack.com.
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FAQ
The vulnerability can result in resource exhaustion and potential system instability, leading to a denial-of-service condition or other unpredictable behavior.
You can use the Vulert Playground (https://vulert.com/scanner) to check if your system is affected by this vulnerability. It provides real-time monitoring and alerts for open-source vulnerabilities.
No specific workaround has been provided for this vulnerability. It is recommended to update the Linux Kernel to the fixed version.
The vulnerability was introduced in version v3.3 of the Linux Kernel and has been fixed in version v5.17.14.
At the time of this report, no known exploits have been identified for this vulnerability. However, it is important to apply the necessary updates to mitigate the risk.
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