Use After Free Vulnerability in scsi: iscsi
Summary
GSD-2021-1001683: scsi: iscsi: Fix iscsi_task use after free. Affects Kernel versions >= d39df158518ccc3bf24ee18082b5e100c8f014aa, < 1642f51ac0d4f2b55d5748094c49ff8f7191b93c. No fix is published. How to fix ↓
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Background
The scsi: iscsi package is a component of the Linux Kernel, which is responsible for handling SCSI (Small Computer System Interface) commands over an iSCSI (Internet Small Computer System Interface) network. It provides the necessary functionality for connecting and communicating with iSCSI storage devices. The vulnerability in question is related to the handling of iscsi_task objects within the package.
Vulnerability Detail
The vulnerability identified in scsi: iscsi is a use after free issue. This occurs when a program continues to reference memory after it has been freed, leading to potential memory corruption and the possibility of an attacker executing arbitrary code. In this case, the vulnerability specifically affects the iscsi_task object, which is not properly handled, resulting in a use after free condition. 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
No specific workaround has been mentioned for this vulnerability.
Conclusion
The use after free vulnerability in scsi: iscsi has been identified and fixed in the Linux Kernel version v5.14.12. It is crucial to update the Linux Kernel to at least this version to mitigate the risk of exploitation. For further support and assistance in vulnerability remediation, please contact DevNack.com.
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FAQ
scsi: iscsi is a component of the Linux Kernel that handles SCSI commands over an iSCSI network, enabling communication with iSCSI storage devices.
A use after free vulnerability occurs when a program continues to reference memory after it has been freed, potentially leading to memory corruption and the execution of arbitrary code.
The impact of this vulnerability is not yet proven. However, if successfully exploited, it could allow an attacker to execute arbitrary code, potentially compromising the security and integrity of the system.
To fix this vulnerability, it is recommended to update the Linux Kernel to version v5.14.12 or later, which includes the necessary fix for the use after free issue in scsi: iscsi. Follow the official documentation and guidelines provided by the Linux Kernel development team for a successful update.
No specific workaround has been mentioned for this vulnerability. It is advised to update the Linux Kernel to the fixed version as soon as possible.
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