Vulnerability in Kernel: scsi_debug - Sanity check block descriptor length in resp_mode_select()
Summary
GSD-2021-1002715: scsi: scsi_debug: Sanity check block descriptor length in resp_mode_select(). Affects Kernel versions < a9078e791426c2cbbdf28a320c3670f6e0a611e6. 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 functionalities and interfaces with hardware devices. It manages system resources, facilitates communication between software and hardware, and ensures the overall stability and security of the system. The scsi_debug module is a SCSI target driver used for testing and debugging purposes. It emulates a SCSI device and allows developers to simulate various scenarios. However, a vulnerability has been identified in the scsi_debug module that could potentially be exploited by attackers.
Vulnerability Detail
The vulnerability exists in the resp_mode_select() function of the scsi_debug module. It fails to perform a proper sanity check on the length of the block descriptor, which could lead to a buffer overflow or other memory corruption issues. An attacker could exploit this vulnerability by sending a specially crafted SCSI command to a system with the scsi_debug module loaded. Successful exploitation could result in arbitrary code execution, privilege escalation, or denial of service.
How To Fix
No fixed version is published for this vulnerability.
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Workaround
There is no known workaround for this vulnerability. It is essential to apply the recommended fix by updating the Linux Kernel.
Conclusion
The scsi_debug module in the Kernel is vulnerable to a buffer overflow or memory corruption issue due to a lack of proper sanity checks. This vulnerability can be mitigated by updating the Linux Kernel to version v5.10.88 or later. It is crucial to apply the recommended fix to ensure the security and stability of the system. For further support on vulnerability remediation, you can reach out to DevNack.com.
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FAQ
The scsi_debug module is a SCSI target driver used for testing and debugging purposes. It emulates a SCSI device and allows developers to simulate various scenarios.
This vulnerability could potentially allow an attacker to execute arbitrary code, escalate privileges, or cause a denial of service on a system with the scsi_debug module loaded.
To fix this vulnerability, it is recommended to update the Linux Kernel to version v5.10.88 or later. Ensure that your system is running the updated version of the Kernel.
There is no known workaround for this vulnerability. It is crucial to apply the recommended fix by updating the Linux Kernel.
For more details about this vulnerability, you can refer to the source link provided in the database_specific section of the vulnerability details.
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