Use-after-free vulnerability in iwlwifi
Summary
GSD-2022-1000307: iwlwifi: fix use-after-free. Affects Kernel versions >= 8e10749fa1a454c1e7214f36cec83241f5a36ef1, < d3b98fe36f8a06ce654049540773256ab59cb53d. No fix is published. How to fix ↓
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Background
The iwlwifi package is a Linux kernel module that provides support for Intel Wireless WiFi Link adapters. It allows users to connect to wireless networks and access the internet wirelessly. The package is an integral part of the Linux kernel and is commonly used in various Linux distributions. However, a use-after-free vulnerability has been discovered in iwlwifi, which could potentially be exploited by attackers to execute arbitrary code or cause a denial of service.
Vulnerability Detail
The use-after-free vulnerability in iwlwifi arises from a programming error that allows a pointer to be accessed after the memory it points to has been freed. This can lead to various issues, including crashes, data corruption, and the execution of malicious code. An attacker who successfully exploits this vulnerability could gain unauthorized access to sensitive information, modify data, or disrupt the normal operation of the system. The vulnerability was introduced in version v4.14.263 of the Linux kernel and has been fixed in version v4.14.268.
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 strongly recommended to apply the fix by updating the Linux kernel.
Conclusion
The use-after-free vulnerability in iwlwifi can have serious security implications, potentially allowing attackers to execute arbitrary code or cause a denial of service. It is crucial to update the Linux kernel to version v4.14.268 or later to mitigate this vulnerability. For further support on vulnerability remediation, please contact DevNack.com.
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FAQ
iwlwifi is a Linux kernel module that provides support for Intel Wireless WiFi Link adapters. It allows users to connect to wireless networks and access the internet wirelessly.
A use-after-free vulnerability is a type of memory corruption bug that occurs when a program continues to use a pointer after the memory it points to has been freed. This can lead to crashes, data corruption, and potentially allow attackers to execute arbitrary code.
An attacker can exploit this vulnerability by crafting a malicious wireless network or by sending specially crafted wireless packets to a vulnerable system. If successful, the attacker may be able to execute arbitrary code, gain unauthorized access to sensitive information, or cause a denial of service.
Yes, this vulnerability has been fixed in Linux Kernel version v4.14.268 by commit d3b98fe36f8a06ce654049540773256ab59cb53d. It was introduced in version v4.14.263 by commit 8e10749fa1a454c1e7214f36cec83241f5a36ef1.
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