hwrng: cavium - fix NULL but dereferenced coccicheck error in Kernel
Summary
GSD-2022-1001159: hwrng: cavium - fix NULL but dereferenced coccicheck error. Affects Kernel versions < e47b12f9415169eceda6770fcf45802e0c8d2a66. No fix is published. How to fix ↓
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Background
The Kernel is a crucial component of the Linux operating system that provides core functionality and acts as a bridge between hardware and software. It manages system resources, facilitates communication between different software components, and ensures the stability and security of the system. The hwrng (hardware random number generator) subsystem in the Kernel is responsible for generating random numbers using hardware-based entropy sources. This vulnerability specifically affects the Cavium hwrng driver in the Kernel.
Vulnerability Detail
The vulnerability in the Cavium hwrng driver involves a NULL pointer dereference error. This error occurs when the driver attempts to access or dereference a NULL pointer, leading to a system crash or potential privilege escalation. An attacker could potentially exploit this vulnerability to crash the system or gain elevated privileges. The vulnerability has been identified and fixed in the Linux Kernel version v5.17.2 by commit e47b12f9415169eceda6770fcf45802e0c8d2a66.
How To Fix
No fixed version is published for this vulnerability.
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Conclusion
The hwrng: cavium - fix NULL but dereferenced coccicheck error vulnerability in the Kernel's Cavium hwrng driver can potentially lead to system crashes or privilege escalation. It is crucial to update the Linux Kernel to version v5.17.2 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 lead to a system crash or privilege escalation, allowing an attacker to disrupt the system's operation or gain unauthorized access.
No, there is no known workaround for this vulnerability. It is recommended to update the Kernel to the fixed version.
You can use the Vulert Playground (https://vulert.com/scanner) to check if your system is affected by this vulnerability. Simply upload your package-lock.json file and the Vulert tool will analyze it for any open-source vulnerabilities, including this one.
The exact exploitability of this vulnerability is not yet proven. However, in general, if an attacker can gain access to the system or execute arbitrary code, they may be able to exploit this vulnerability.
You can find more information about this vulnerability in the GSD-2022-1001159 JSON file available on the Cloud Security Alliance's GitHub repository (https://github.com/cloudsecurityalliance/gsd-database/blob/main/2022/1001xxx/GSD-2022-1001159.json).
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