Vulnerability in Kernel: wl1251 - Dynamically Allocate Memory Used for DMA
Summary
GSD-2022-1002788: wl1251: dynamically allocate memory used for DMA. Affects Kernel versions >= a1c510d0adc604bb143c86052bc5be48cbcfa17c, < da03bbfbf5acd1ab0b074617e865ad1e8a5779ef. No fix is published. How to fix ↓
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Background
The Kernel is a crucial component of the Linux operating system, responsible for managing system resources and facilitating communication between hardware and software. It provides essential functionalities such as process management, memory management, and device drivers. The wl1251 module is a wireless LAN driver used for Texas Instruments' WiLink 6.0 family of chips. It enables wireless connectivity on devices using these chips. However, a vulnerability has been discovered in the wl1251 module that involves the improper allocation of memory used for Direct Memory Access (DMA).
Vulnerability Detail
The vulnerability in the wl1251 module arises from the static allocation of memory used for DMA operations. By dynamically allocating memory instead, the module can prevent potential security vulnerabilities. The impact and attack plausibility of this vulnerability have not been proven yet. However, if exploited, an attacker could potentially gain unauthorized access to sensitive information or execute arbitrary code on the affected system. This vulnerability was introduced in version v5.18 of the Linux Kernel and has been fixed in version v5.18.3.
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 Linux Kernel, there is no specific workaround available. It is advisable to update the Kernel to address the issue.
Conclusion
The vulnerability in the wl1251 module of the Linux Kernel, which involves the static allocation of memory used for DMA, has been addressed in version v5.18.3. It is crucial to update the Kernel to ensure the system is protected against potential attacks. 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 manages system resources and facilitates communication between hardware and software.
The wl1251 module is a wireless LAN driver used for Texas Instruments' WiLink 6.0 family of chips. It enables wireless connectivity on devices using these chips.
DMA stands for Direct Memory Access. It is a feature of computer systems that allows certain hardware devices to access system memory directly, bypassing the CPU.
If exploited, this vulnerability could allow an attacker to gain unauthorized access to sensitive information or execute arbitrary code on the affected system.
To protect your system, it is recommended to update the Linux Kernel to version v5.18.3 or later, which includes the necessary fix for this vulnerability.
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