Vulnerability in Kernel: ipmi: ssif: initialize ssif_info->client early
Summary
GSD-2021-1002831: ipmi: ssif: initialize ssif_info->client early. Affects Kernel versions >= c4436c9149c5d2bc0c49ab57ec85c75ea1c4d61c, < 77a7311ca167aa5b7055c549a940a56e73ee5f29. No fix is published. How to fix ↓
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Background
The Kernel is a crucial component of the Linux operating system that provides core functionalities and acts as a bridge between hardware and software. It manages system resources, facilitates communication between different software components, and ensures the overall stability and security of the system. The vulnerability in question affects the Kernel's ipmi (Intelligent Platform Management Interface) subsystem, specifically the ssif (System Interface to Intelligent Platform Management Controller (IPMC) Firmware) driver. This driver is responsible for handling communication with IPMC devices over the System Services Interface (SSI) bus. The vulnerability arises due to a failure to initialize the ssif_info->client structure early in the initialization process, potentially leading to security issues.
Vulnerability Detail
The vulnerability allows an attacker to exploit the uninitialized ssif_info->client structure in the ssif driver. By sending specially crafted IPMI messages to the affected system, an attacker may be able to trigger memory corruption or other security vulnerabilities. The impact and attack plausibility of this vulnerability have not been proven yet, but it is important to address it to mitigate potential risks. The vulnerability was introduced in Kernel version v5.4 and has been fixed in version v5.15.12.
How To Fix
No fixed version is published for this vulnerability.
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Workaround
As this vulnerability has been fixed in the latest version of the Kernel, there is no specific workaround available. It is strongly advised to update the Kernel to the recommended version.
Conclusion
The vulnerability in the Kernel's ipmi ssif driver can be mitigated by updating the Kernel to version v5.15.12 or later. This update ensures that the ssif_info->client structure is properly initialized, reducing the risk of potential exploitation. For further support on vulnerability remediation, please contact DevNack.com.
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FAQ
The Kernel is a critical component of the Linux operating system that provides core functionalities and acts as a bridge between hardware and software.
ipmi stands for Intelligent Platform Management Interface. It is a standardized interface for managing and monitoring computer systems.
The ssif driver is part of the ipmi subsystem in the Kernel. It handles communication with IPMC devices over the System Services Interface (SSI) bus.
The uninitialized ssif_info->client structure can be exploited by an attacker to trigger memory corruption or other security vulnerabilities, potentially leading to unauthorized access or system compromise.
To protect your system, it is recommended to update the Kernel to version v5.15.12 or later, as this includes the necessary fix for the vulnerability.
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