Double Free Vulnerability in mac80211
Summary
GSD-2022-1002516: mac80211: fix potential double free on mesh join. Affects Kernel versions >= 3212d6248faf0efce6b7a718e198feecce0eea05, < 615716af8644813355e014314a0bc1e961250f5a. No fix is published. How to fix ↓
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Background
The mac80211 package is a subsystem in the Linux Kernel that provides support for wireless LAN devices. It is responsible for managing the wireless network interface and implementing various protocols and algorithms for wireless communication. The mac80211 package is a critical component for enabling wireless connectivity on Linux systems.
Vulnerability Detail
The vulnerability identified as GSD-2022-1002516 in mac80211 is related to a potential double free issue that can occur during the process of joining a mesh network. A double free vulnerability arises when a program attempts to free a memory block that has already been freed, leading to memory corruption and potential exploitation by an attacker. In this case, the vulnerability can be triggered when a device attempts to join a mesh network, potentially allowing an attacker 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 specific workaround provided for this vulnerability. The recommended approach is to apply the fix by updating the Linux Kernel to the latest version.
Conclusion
The double free vulnerability in mac80211 can pose a significant security risk, potentially allowing attackers to execute arbitrary code or disrupt the functionality of the affected system. It is crucial to promptly update the Linux Kernel to the recommended version to mitigate this vulnerability. For further support and assistance in vulnerability remediation, please contact DevNack.com.
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FAQ
mac80211 is a subsystem in the Linux Kernel that provides support for wireless LAN devices and manages wireless network interfaces.
A double free vulnerability occurs when a program attempts to free a memory block that has already been freed, leading to memory corruption and potential exploitation.
This vulnerability can be exploited by triggering the double free issue during the process of joining a mesh network, potentially allowing an attacker to execute arbitrary code or cause a denial-of-service condition.
To fix this vulnerability, update the Linux Kernel to version v4.9.309 or later by obtaining the updated kernel from the official Linux Kernel repository.
No specific workaround is provided for this vulnerability. It is recommended to apply the fix by updating the Linux Kernel.
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