Late Beacon Hrtimer Handling Vulnerability in mac80211-hwsim
Summary
UVI-2021-1001648: mac80211-hwsim: fix late beacon hrtimer handling. Affects Kernel versions >= 01e59e467ecf976c782eecd4dc99644802cc60e2, < 2c204cf594df3b9468368dc9d0b24d482d93cda7. No fix is published. How to fix ↓
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Background
The mac80211-hwsim package is a software simulator for the mac80211 wireless LAN driver framework in the Linux kernel. It allows developers to test and experiment with wireless networking features without the need for physical hardware. The package provides a virtual environment that emulates wireless devices and their interactions. However, a vulnerability has been discovered in the handling of late beacons in the hrtimer component of mac80211-hwsim.
Vulnerability Detail
The late beacon hrtimer handling vulnerability in mac80211-hwsim allows an attacker to exploit a flaw in the software's handling of hrtimers associated with late beacons. By manipulating these hrtimers, an attacker could potentially disrupt the normal operation of the wireless networking functionality provided by mac80211-hwsim. The impact of this vulnerability could range from denial of service (DoS) attacks to potential privilege escalation or information disclosure.
How To Fix
No fixed version is published for this vulnerability.
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Workaround
No workaround has been provided for this vulnerability. It is recommended to apply the fix mentioned in the 'how_to_fix' section.
Conclusion
The late beacon hrtimer handling vulnerability in mac80211-hwsim can be mitigated by updating the Linux Kernel to a version that includes the necessary fix. It is important to promptly apply this update to ensure the security and stability of the wireless networking functionality provided by mac80211-hwsim. For further support on vulnerability remediation, please contact DevNack.com.
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FAQ
mac80211-hwsim is a software simulator for the mac80211 wireless LAN driver framework in the Linux kernel. It provides a virtual environment for testing and experimenting with wireless networking features.
The vulnerability could lead to denial of service (DoS) attacks, privilege escalation, or information disclosure.
To fix this vulnerability, update the Linux Kernel to version v5.10.71 or later.
No workaround has been provided. It is recommended to apply the fix mentioned in the 'how_to_fix' section.
For more details, refer to the vulnerability report at the following source: https://github.com/cloudsecurityalliance/gsd-database/blob/main/2021/1001xxx/UVI-2021-1001648.json
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