Vulnerability in Kernel: Fix error handling of scsi_host_alloc()
Summary
UVI-2021-1000849: scsi: core: Fix error handling of scsi_host_alloc(). Affects Kernel versions < 8958181c1663e24a13434448e7d6b96b5d04900a. No fix is published. How to fix ↓
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Background
The Kernel is a critical component of the Linux operating system that provides core functionality and interfaces with hardware devices. It manages 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 responsible for allocating resources for a SCSI host. However, a vulnerability exists in the error handling of this function, which could lead to potential security issues.
Vulnerability Detail
The vulnerability in the scsi_host_alloc() function of the Kernel's SCSI core arises from improper error handling. If an error occurs during the allocation of resources for a SCSI host, the function may not handle it correctly, potentially leaving the system in an inconsistent state. An attacker could exploit this vulnerability to cause a denial-of-service (DoS) condition or execute arbitrary code with elevated privileges. 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 vulnerability in the scsi_host_alloc() function of the Kernel's SCSI core can lead to potential security issues, including a denial-of-service (DoS) condition or arbitrary code execution. It is recommended to update the Linux Kernel to version v4.9.273 or later to fix this vulnerability. For further support on vulnerability remediation, please contact DevNack.com.
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FAQ
The impact of this vulnerability could range from a denial-of-service (DoS) condition to potential execution of arbitrary code with elevated privileges.
You can use the Vulert Playground at Vulert Scanner to check if your system is affected by this vulnerability. Simply upload your manifest file (e.g., package-lock.json) and the Vulert Playground will provide real-time alerts for open-source vulnerabilities, including this one.
Yes, a patch is available in the Linux Kernel version v4.9.273. It is recommended to update your Kernel to this version or a later one to fix the vulnerability.
The remote exploitability of this vulnerability has not been determined yet. However, it is advisable to apply the patch as soon as possible to mitigate any potential risks.
There are no known instances of this vulnerability being exploited at the moment. However, it is crucial to keep your system up to date with the latest security patches to minimize the risk of exploitation.
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