Use-after-free race on station removal in mt76
Summary
GSD-2022-1003092: mt76: fix tx status related use-after-free race on station removal. Affects Kernel versions >= bd1e3e7b693c17a04e7d2bd9119daa482b7c7720, < ef7f9f894cfd0b2e471206409a529af4a26ddd55. No fix is published. How to fix ↓
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Background
The mt76 package is a driver for MediaTek MT76x0e, MT76x2e, MT7603, MT7615, MT7628, and MT7688 wireless LAN chips. It provides support for these chips in the Linux Kernel. The package is responsible for managing wireless communication and network connectivity on devices that utilize these MediaTek chips.
Vulnerability Detail
The vulnerability in mt76 is related to a use-after-free race condition that occurs when a station is removed. This race condition can lead to a use-after-free vulnerability, where a reference to freed memory is still accessed. 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.
To fix this vulnerability, it is recommended to update to Linux Kernel version v5.17.14 or later. This version includes the necessary fix for the use-after-free race on station removal. Users can obtain the updated kernel from the official Linux Kernel repository.
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Workaround
There is no known workaround for this vulnerability at this time.
Conclusion
The use-after-free race on station removal vulnerability in mt76 can potentially lead to serious security issues. It is crucial for users of the affected package to update to the fixed version of the Linux Kernel to ensure the security and stability of their systems. For further support and assistance with vulnerability remediation, please contact DevNack.com.
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FAQ
mt76 is a driver package for MediaTek wireless LAN chips in the Linux Kernel.
A use-after-free vulnerability occurs when a program continues to use memory after it has been freed, which can lead to unpredictable behavior and potential security issues.
An attacker could potentially exploit this vulnerability by crafting malicious network traffic or by leveraging other vulnerabilities to trigger the use-after-free condition.
The impact of this vulnerability can vary depending on the attacker's capabilities and the specific context in which it is exploited. Possible consequences include arbitrary code execution or denial-of-service conditions.
Yes, the vulnerability has been fixed in Linux Kernel version v5.17.14. Users are advised to update to this version or a later one to mitigate the risk.
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