mac80211: Limit Injected VHT MCS/NSS in ieee80211_parse_tx_radiotap
Summary
GSD-2021-1001649: mac80211: limit injected vht mcs/nss in ieee80211_parse_tx_radiotap. Affects Kernel versions >= 646e76bb5daf4ca38438c69ffb72cccb605f3466, < 1282bb00835ff79d2d9c023055d514df5b4de260. No fix is published. How to fix ↓
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Background
The mac80211 is a subsystem in the Linux kernel that provides the implementation of the IEEE 802.11 wireless networking stack. It is responsible for managing wireless network interfaces and handling various operations related to wireless communication. The vulnerability affects the mac80211 subsystem in the Linux kernel.
Vulnerability Detail
The vulnerability in mac80211 allows an attacker to inject VHT (Very High Throughput) MCS (Modulation and Coding Scheme) and NSS (Number of Spatial Streams) values in the ieee80211_parse_tx_radiotap function. This can lead to potential security issues, although the actual impact and attack plausibility have not been proven. The vulnerability was introduced in version v4.7 of the Linux kernel and is fixed in version v5.10.71.
How To Fix
No fixed version is published for this vulnerability.
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Workaround
There is no specific workaround mentioned for this vulnerability.
Conclusion
The mac80211 vulnerability allows for the injection of VHT MCS/NSS values, potentially leading to security issues. It is recommended to update the Linux kernel to version v5.10.71 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 implements the IEEE 802.11 wireless networking stack.
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.
ieee80211_parse_tx_radiotap is a function in the mac80211 subsystem that parses the radiotap header of transmitted frames.
You can check the version of your Linux kernel by running the command 'uname -r' in a terminal.
No known exploit for this vulnerability has been reported at the moment.
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