Vulnerability in batman-adv: Avoid WARN_ON timing related checks
Summary
GSD-2021-1000914: batman-adv: Avoid WARN_ON timing related checks. Affects Kernel versions >= ef0a937f7a1450d3a133ccd83c9c7d07587e7a00, < e7fbd8184fa9e85f0d648c499841cb7ff6dec9f4. No fix is published. How to fix ↓
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Background
The batman-adv package is a component of the Linux Kernel ecosystem. It provides the functionality for the Batman-Advanced (batman-adv) mesh networking protocol. This protocol allows nodes in a wireless ad-hoc network to communicate with each other, forming a distributed network without the need for a centralized infrastructure. The batman-adv package is widely used in various applications, including community networks, IoT deployments, and wireless mesh networks. However, a vulnerability has been discovered in batman-adv that could potentially be exploited by attackers.
Vulnerability Detail
The vulnerability in batman-adv is related to timing checks performed by the WARN_ON macro. The WARN_ON macro is used in the code to issue a warning message if a certain condition is met. However, due to timing-related issues, these checks can be triggered incorrectly, leading to false positive warnings or even system crashes. Although the actual impact and attack plausibility of this vulnerability have not been proven, it is important to address it to ensure the stability and security of systems using batman-adv.
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. The recommended solution is to update the Linux Kernel to the fixed version.
Conclusion
In conclusion, a vulnerability has been identified in batman-adv that could lead to false positive warnings or system crashes. It is crucial to update the Linux Kernel to version v5.4.128 or later to mitigate this vulnerability. For further support on vulnerability remediation, you can contact DevNack.com.
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FAQ
Batman-Advanced (batman-adv) is a mesh networking protocol used in the Linux Kernel ecosystem. It allows nodes in a wireless ad-hoc network to communicate with each other, forming a distributed network without the need for a centralized infrastructure.
The impact of this vulnerability is not yet proven. However, it could potentially result in false positive warnings or system crashes due to incorrect timing checks in batman-adv.
To fix this vulnerability, it is recommended to update the Linux Kernel to version v5.4.128 or later, which includes the necessary fix for batman-adv.
No specific workarounds are mentioned for this vulnerability. Updating the Linux Kernel to the fixed version is the recommended solution.
For more information about this vulnerability, you can refer to the provided references link in the vulnerability details section.
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