mac80211: Limit Injected VHT MCS/NSS in ieee80211_parse_tx_radiotap
Summary
GSD-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 the implementation of the IEEE 802.11 wireless networking stack. It is responsible for managing wireless network interfaces and handling communication between devices. The vulnerability in mac80211 arises from a limitation in the parsing of transmitted radiotap headers, specifically related to the injected VHT MCS/NSS values. This vulnerability can potentially be exploited by an attacker to manipulate the transmitted data and cause various security issues.
Vulnerability Detail
The vulnerability in mac80211 allows for the injection of VHT MCS/NSS values in the ieee80211_parse_tx_radiotap function. This can lead to potential security risks, although the exact impact and attack plausibility have not been proven. The vulnerability was introduced in version v4.7 of the Linux Kernel and has been fixed in version v5.4.151. The fix limits the injected VHT MCS/NSS values, mitigating the potential risks associated with this vulnerability.
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 related to the limitation in injected VHT MCS/NSS values has been described. It is recommended to update the Linux Kernel to version v5.4.151 or later to mitigate this vulnerability. For further support on vulnerability remediation, you can 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.
The exact impact of this vulnerability is not proven, but it has the potential to be exploited for various security risks.
To fix this vulnerability, update the Linux Kernel to version v5.4.151 or later.
No specific workaround has been mentioned for this vulnerability.
For more information, you can refer to the provided references link in the vulnerability details.
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