Race Condition in cfg80211 Netlink Owner Interface Destruction
Summary
GSD-2022-1000465: cfg80211: fix race in netlink owner interface destruction. Affects Kernel versions >= ea6b2098dd02789f68770fd3d5a373732207be2f, < 241e633cb379c4f332fc1baf2abec95ec840cbeb. No fix is published. How to fix ↓
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Background
The cfg80211 package is a component of the Linux Kernel that provides the framework for wireless configuration. It allows users to manage wireless devices, scan for available networks, and configure wireless settings. The package is responsible for handling netlink messages, which are used for communication between the kernel and user-space processes. Netlink owner interface destruction is a critical function in cfg80211 that is responsible for cleaning up resources when a netlink owner interface is destroyed.
Vulnerability Detail
The vulnerability identified as GSD-2022-1000465 in cfg80211 is a race condition in the netlink owner interface destruction process. A race condition occurs when multiple threads or processes access shared resources simultaneously, leading to unexpected behavior or security vulnerabilities. In this case, the race condition can be triggered during the destruction of a netlink owner interface, potentially resulting in memory corruption or other undefined behavior. An attacker could potentially exploit this vulnerability to execute arbitrary code or cause a denial-of-service condition.
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 recommended to apply the fix by updating the Linux Kernel.
Conclusion
The race condition vulnerability in cfg80211's netlink owner interface destruction process can be mitigated by updating the Linux Kernel to version v5.15.25 or later. Regularly updating the Linux Kernel is recommended to ensure the latest security patches are applied. For further support on vulnerability remediation, please contact DevNack.com.
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FAQ
cfg80211 is a component of the Linux Kernel that provides the framework for wireless configuration.
A race condition occurs when multiple threads or processes access shared resources simultaneously, leading to unexpected behavior or security vulnerabilities.
Netlink owner interface destruction is a critical function in cfg80211 that cleans up resources when a netlink owner interface is destroyed.
The vulnerability could potentially allow an attacker to execute arbitrary code or cause a denial-of-service condition.
To fix the vulnerability, update your Linux Kernel to version v5.15.25 or later.
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