Refcount Leak Bug in xtensa: xtfpga Setup
Summary
GSD-2022-1004826: xtensa: xtfpga: Fix refcount leak bug in setup. Affects Kernel versions < 0715d0e60052662c3f225342062f174dd721d1c7. No fix is published. How to fix ↓
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Background
The xtensa: xtfpga is a component in the Linux Kernel that provides support for the Xtensa FPGA platform. It allows users to configure and utilize FPGA devices on systems running the Linux operating system. The xtensa: xtfpga setup function is responsible for initializing the necessary resources and preparing the FPGA for operation.
Vulnerability Detail
The vulnerability identified in the xtensa: xtfpga setup function is a refcount leak bug. This bug leads to a failure in properly releasing resources when setting up the FPGA, resulting in a refcount leak. An attacker could potentially exploit this vulnerability to exhaust system resources, leading to a denial-of-service condition or other unexpected behavior. 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 refcount leak bug in the xtensa: xtfpga setup function of the Linux Kernel has the potential to cause resource exhaustion and unexpected behavior. It is recommended to update the Linux Kernel to version v4.19.250 or later to mitigate this vulnerability. For further support on vulnerability remediation, please contact DevNack.com.
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FAQ
The impact of this vulnerability could potentially lead to a denial-of-service condition or other unexpected behavior due to resource exhaustion.
You can use Vulert's playground (https://vulert.com/scanner) to check if your system is affected by this vulnerability. Vulert uses a manifest file like package-lock.json to monitor and alert in real-time for open-source vulnerabilities in the software.
No, there is currently no known exploit for this vulnerability.
The recommended mitigation is to update the Linux Kernel to version v4.19.250 or later, which includes the fix for this vulnerability.
You can find more information about this vulnerability in the Open Source Vulnerability Database (OSVDB) entry GSD-2022-1004826 (https://github.com/cloudsecurityalliance/gsd-database/blob/main/2022/1004xxx/GSD-2022-1004826.json).
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