PCI: endpoint: Fix NULL pointer dereference for ->get_features() in Kernel
Summary
GSD-2021-1000335: PCI: endpoint: Fix NULL pointer dereference for ->get_features(). Affects Kernel versions >= 2c04c5b8eef797dca99699cfb55ff42dd3c12c23, < bbed83d7060e07a5d309104d25a00f0a24441428. No fix is published. How to fix ↓
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Background
The Kernel is a crucial component of the Linux operating system that manages the system's resources and facilitates communication between hardware and software. It provides essential functions and services to enable the proper functioning of the system. However, a vulnerability has been identified in the Kernel related to the PCI endpoint subsystem. This vulnerability can lead to a NULL pointer dereference when accessing the ->get_features() function.
Vulnerability Detail
The vulnerability arises due to a NULL pointer dereference in the ->get_features() function of the PCI endpoint subsystem. This can occur when the function is called without proper validation, leading to a crash or potential privilege escalation. An attacker may exploit this vulnerability to execute arbitrary code or cause a denial-of-service condition. The vulnerability was introduced in Kernel version v5.1 and has been fixed in version v5.10.38.
How To Fix
No fixed version is published for this vulnerability.
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Conclusion
The Kernel is susceptible to a NULL pointer dereference vulnerability in the PCI endpoint subsystem. This vulnerability can lead to crashes, privilege escalation, and potential code execution. It is crucial to update the Kernel to version v5.10.38 or later to mitigate this vulnerability. For further support and assistance in vulnerability remediation, please contact DevNack.com.
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FAQ
The vulnerability can potentially allow an attacker to execute arbitrary code or cause a denial-of-service condition.
You can use Vulert's playground at Vulert Scanner to check if your system is affected by this vulnerability. Simply upload your package-lock.json file, and Vulert will provide real-time alerts for open-source vulnerabilities, including this one.
No specific workaround has been provided for this vulnerability. It is recommended to update the Kernel to the fixed version.
The vulnerability was introduced in Kernel version v5.1 and has been fixed in version v5.10.38.
You can find more information about this vulnerability in the GSD-2021-1000335 entry of the GSD database maintained by the Cloud Security Alliance. The link to the entry is available in the references section.
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