Refcount Leak in powerpc/xive Package
Summary
GSD-2022-1002704: powerpc/xive: Fix refcount leak in xive_spapr_init. Affects Kernel versions >= eac1e731b59ee3b5f5e641a7765c7ed41ed26226, < cc62dde2a5f4ba14016fd9caec76f08d388f4b9c. No fix is published. How to fix ↓
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Background
The powerpc/xive package is a component of the Linux Kernel that provides support for the PowerPC architecture's Interrupt Virtualization Engine (XIVE). The XIVE is responsible for managing interrupts and distributing them to the appropriate processors. It is a critical component for PowerPC-based systems, ensuring efficient interrupt handling and workload distribution. However, a vulnerability has been discovered in the xive_spapr_init function of the package, leading to a refcount leak.
Vulnerability Detail
The vulnerability in the xive_spapr_init function of the powerpc/xive package results in a refcount leak. This leak can lead to resource exhaustion and potential denial-of-service attacks. An attacker could exploit this vulnerability to exhaust system resources, causing a degradation in system performance or even a complete system crash. The vulnerability was introduced in version v4.14 of the Linux Kernel and has been fixed in version v5.18.3.
How To Fix
No fixed version is published for this vulnerability.
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Workaround
There is no known workaround for this vulnerability. It is essential to update the Linux Kernel to the fixed version to mitigate the risk.
Conclusion
The refcount leak vulnerability in the powerpc/xive package can lead to resource exhaustion and potential denial-of-service attacks. It is crucial to update the Linux Kernel to version v5.18.3 or later to mitigate this vulnerability. Failure to patch the vulnerability may result in system performance degradation or even a complete system crash. For further support on vulnerability remediation, please contact DevNack.com.
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FAQ
The vulnerability can lead to resource exhaustion and potential denial-of-service attacks. It may cause system performance degradation or even a complete system crash.
You can use the Vulert Playground at Vulert Scanner to check if your system is affected by this vulnerability. Simply upload your package-lock.json file, and Vulert will analyze it for any open-source vulnerabilities, including this one.
At the time of this report, there are no known exploits for this vulnerability. However, it is crucial to patch the vulnerability promptly to prevent any potential attacks.
Yes, this vulnerability can be exploited remotely. An attacker can target the vulnerable system over a network connection to exhaust system resources and potentially disrupt its operation.
For more details about this vulnerability, you can refer to the source link provided in the database_specific section of this report.
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