Kernel: scsi: advansys: Fix kernel pointer leak
Summary
GSD-2021-1002269: scsi: advansys: Fix kernel pointer leak. Affects Kernel versions < cc248790bfdcf879e3094fa248c85bf92cdf9dae. 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 system resources, facilitates communication between software and hardware, and ensures the stability and security of the system. The scsi (Small Computer System Interface) subsystem in the Kernel handles communication with SCSI devices, such as hard drives and tape drives. The advansys driver is responsible for supporting AdvanSys SCSI host adapters. However, a vulnerability has been identified in the advansys driver that could lead to a kernel pointer leak.
Vulnerability Detail
The vulnerability in the advansys driver allows an attacker to leak kernel pointers. Kernel pointers are memory addresses that point to specific locations in the Kernel's memory. By leaking these pointers, an attacker can gain insights into the Kernel's memory layout, potentially aiding in the exploitation of other vulnerabilities or bypassing security mechanisms. The impact and attack plausibility of this vulnerability have not been proven yet. The vulnerability has been fixed in Linux Kernel version v5.4.162 by commit cc248790bfdcf879e3094fa248c85bf92cdf9dae.
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. The recommended approach is to apply the fix by updating the Linux Kernel.
Conclusion
The advansys driver in the Linux Kernel has been found to have a vulnerability that can lead to a kernel pointer leak. While the impact and attack plausibility are not yet proven, it is recommended to update the Linux Kernel to version v5.4.162 or later to mitigate this vulnerability. For further support on vulnerability remediation, you can reach out to DevNack.com.
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FAQ
The impact of this vulnerability is not yet proven. However, leaking kernel pointers can potentially aid attackers in exploiting other vulnerabilities or bypassing security mechanisms.
You can check if your system is affected by this vulnerability by using the Vulert Playground (https://vulert.com/scanner). Simply upload your package-lock.json file to the playground, and it will analyze and alert you if your system is affected.
Yes, a patch for this vulnerability is available in Linux Kernel version v5.4.162. It is recommended to update the Kernel to this version or later.
The remote exploitability of this vulnerability is not yet determined. Further analysis is required to assess the potential for remote exploitation.
You can find more information about this vulnerability in the vulnerability database maintained by the Cloud Security Alliance. The specific vulnerability ID is GSD-2021-1002269. The database entry can be accessed at https://github.com/cloudsecurityalliance/gsd-database/blob/main/2021/1002xxx/GSD-2021-1002269.json.
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