mac80211: Limit Injected VHT MCS/NSS in ieee80211_parse_tx_radiotap
Summary
UVI-2021-1001596: mac80211: limit injected vht mcs/nss in ieee80211_parse_tx_radiotap. Affects Kernel versions >= 646e76bb5daf4ca38438c69ffb72cccb605f3466, < ab85997465b972d39d9747fc16311fa5773374b2. 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 implements the IEEE 802.11 wireless networking standard and handles the transmission and reception of wireless frames. The package is responsible for managing the communication between the kernel and wireless network drivers. This vulnerability affects the mac80211 package in the Linux Kernel.
Vulnerability Detail
The vulnerability in mac80211 allows an attacker to inject malicious VHT (Very High Throughput) MCS (Modulation and Coding Scheme) and NSS (Number of Spatial Streams) values in the ieee80211_parse_tx_radiotap function. By exploiting this vulnerability, an attacker can manipulate the transmitted wireless frames, potentially leading to various security issues such as unauthorized access, information disclosure, or denial of service attacks.
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 essential to update the Linux Kernel to the fixed version.
Conclusion
The mac80211 package in the Linux Kernel is vulnerable to an issue that allows for the injection of malicious VHT MCS/NSS values. This vulnerability can have serious security implications, including unauthorized access and denial of service attacks. It is crucial to update the Linux Kernel to version v5.4.151 or later to mitigate this vulnerability. For further support on 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 implements the IEEE 802.11 wireless networking standard.
VHT MCS (Very High Throughput Modulation and Coding Scheme) and NSS (Number of Spatial Streams) are parameters used in wireless communication to determine the data rate and spatial multiplexing capabilities.
Exploiting this vulnerability can lead to unauthorized access, information disclosure, or denial of service attacks by manipulating transmitted wireless frames.
To fix this vulnerability, update the Linux Kernel to version v5.4.151 or later, which includes the necessary fix for the mac80211 package.
No, there is no known workaround for this vulnerability. Updating the Linux Kernel is the recommended solution.
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