Vulnerability in Kernel: bus: mhi: pci_generic
Summary
GSD-2021-1000122: bus: mhi: pci_generic: Remove WQ_MEM_RECLAIM flag from state workqueue. Affects Kernel versions >= 8f70397876872789b2a5deba804eb6216fb5deb7, < abd1510c08a13c88d24b622a83c82e87ff1d3135. No fix is published. How to fix ↓
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Background
The Kernel is a crucial component of the Linux operating system, responsible for managing system resources and facilitating communication between hardware and software. The bus subsystem in the Kernel provides support for various bus types, including the MHI (Mobile High-Definition Link) bus. The pci_generic driver is used for MHI devices connected via PCI (Peripheral Component Interconnect). This vulnerability specifically affects the pci_generic driver in the bus subsystem.
Vulnerability Detail
The vulnerability in the bus: mhi: pci_generic driver involves the incorrect usage of the WQ_MEM_RECLAIM flag in the state workqueue. The WQ_MEM_RECLAIM flag is used to indicate that the workqueue should reclaim memory when idle. However, in this case, it is erroneously set for the state workqueue, which can lead to memory leaks and potential resource exhaustion. An attacker with local access to the system could exploit this vulnerability to exhaust system resources, leading to a denial-of-service (DoS) condition. It is important to note that the impact and attack plausibility of this vulnerability have not been proven.
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 vulnerability in the bus: mhi: pci_generic driver of the Kernel can potentially lead to a denial-of-service (DoS) condition. It is crucial to update the Linux Kernel to version v5.11.20 or later to address 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 (DoS) condition, as it can result in memory leaks and resource exhaustion.
An attacker with local access to the system would be able to exploit this vulnerability.
There is no known evidence of this vulnerability being exploited at the moment.
The recommended solution is to update the Linux Kernel to version v5.11.20 or later, which includes the fix for this vulnerability.
No, this vulnerability requires a code fix in the Kernel and cannot be mitigated through configuration changes.
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