Refcount Leak in powerpc/xics Package
Summary
GSD-2022-1003049: powerpc/xics: fix refcount leak in icp_opal_init(). Affects Kernel versions < 2357bd7499a81c70b460e2191852bbfc7b63c354. No fix is published. How to fix ↓
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Background
The powerpc/xics package is a component of the Linux Kernel, specifically designed for the PowerPC architecture. It provides support for the Interrupt Controller Subsystem (ICS) on PowerPC systems. The ICS is responsible for managing interrupts and delivering them to the appropriate processors. The powerpc/xics package is an essential part of the kernel's functionality on PowerPC-based machines.
Vulnerability Detail
The vulnerability identified as GSD-2022-1003049 in the powerpc/xics package involves a refcount leak in the icp_opal_init() function. This function is responsible for initializing the ICS driver for PowerPC systems running on OpenPOWER firmware. The refcount leak occurs when the icp_opal_init() function is called multiple times, leading to a gradual depletion of system resources. An attacker could potentially exploit this vulnerability to exhaust system resources, resulting in a denial-of-service (DoS) condition. 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
There is no specific workaround mentioned for this vulnerability.
Conclusion
The refcount leak vulnerability in the powerpc/xics package can be mitigated by updating the Linux Kernel to version v5.17.14 or later. This fix resolves the issue and prevents potential resource exhaustion leading to a denial-of-service condition. For further support on vulnerability remediation, please contact DevNack.com.
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FAQ
The powerpc/xics package is a component of the Linux Kernel that provides support for the Interrupt Controller Subsystem (ICS) on PowerPC systems.
The impact of this vulnerability is a potential denial-of-service (DoS) condition due to resource exhaustion.
To fix this vulnerability, update the Linux Kernel to version v5.17.14 or later.
No specific workaround has been mentioned for this vulnerability.
For more details, refer to the vulnerability ID GSD-2022-1003049 in the GSD database.
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