Vulnerability in Kernel: scsi_host_alloc() Error Handling
Summary
GSD-2021-1000907: scsi: core: Fix error handling of scsi_host_alloc(). Affects Kernel versions < 79296e292d67fa7b5fb8d8c27343683e823872c8. 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 providing an interface between hardware and software. It includes various subsystems, including the SCSI (Small Computer System Interface) core, which handles communication with SCSI devices such as hard drives and tape drives. The scsi_host_alloc() function is used to allocate and initialize a SCSI host structure. However, a vulnerability has been discovered in the error handling of this function.
Vulnerability Detail
The vulnerability in the scsi_host_alloc() function of the Kernel's SCSI core could potentially lead to security issues. Although the impact and attack plausibility have not been proven, it is essential to address this vulnerability promptly. The vulnerability has been assigned the ID GSD-2021-1000907 and is fixed in Linux Kernel version v5.4.126 by commit 79296e292d67fa7b5fb8d8c27343683e823872c8.
How To Fix
No fixed version is published for this vulnerability.
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Workaround
No specific workaround has been mentioned for this vulnerability.
Conclusion
The vulnerability in the scsi_host_alloc() function of the Kernel's SCSI core should be addressed by updating the Linux Kernel to version v5.4.126 or later. This will ensure the fix for the vulnerability is applied and mitigate any potential security risks. For further support on vulnerability remediation, you can contact DevNack.com.
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FAQ
The impact of this vulnerability is currently unknown as the attack plausibility has not been proven. However, it is recommended to apply the fix as a precautionary measure.
You can use the Vulert Playground (https://vulert.com/scanner) to check if your system is affected by this vulnerability. Simply upload your manifest file (e.g., package-lock.json) and Vulert will analyze it for open-source vulnerabilities in real-time.
Yes, a patch is available in Linux Kernel version v5.4.126. It is recommended to update to this version or a later one to fix the vulnerability.
While no specific temporary measures have been mentioned, it is generally advisable to follow security best practices such as restricting access to vulnerable systems and monitoring for any suspicious activity.
You can find more information about this vulnerability in the GSD-2021-1000907 entry of the GSD Database (https://github.com/cloudsecurityalliance/gsd-database/blob/main/2021/1000xxx/GSD-2021-1000907.json).
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