Race Condition Vulnerability in veth Package
Summary
GSD-2022-1000319: veth: fix races around rq->rx_notify_masked. Affects Kernel versions >= 948d4f214fde43743c57aae0c708bff44f6345f2, < 8f0ea3777590c16222d4251a49e31dd376ff5ac1. No fix is published. How to fix ↓
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Background
The veth package is a virtual Ethernet device driver in the Linux Kernel. It provides a virtual network interface that can be used for communication between different network namespaces or containers. The veth driver allows packets to be sent between two virtual Ethernet devices, acting as the endpoints of a virtual Ethernet cable. This vulnerability affects versions of the Linux Kernel starting from v4.19, introduced by commit 948d4f214fde43743c57aae0c708bff44f6345f2, and is fixed in version v4.19.230 by commit 8f0ea3777590c16222d4251a49e31dd376ff5ac1.
Vulnerability Detail
The vulnerability in the veth package is related to a race condition around the rx_notify_masked field in the request queue (rq) structure. This race condition can lead to inconsistent state and potential security vulnerabilities. While the actual impact and attack plausibility have not been proven, it is important to address this vulnerability to ensure the stability and security of the system.
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 race condition vulnerability in the veth package can lead to security vulnerabilities and inconsistent system state. It is crucial to update the Linux Kernel to version v4.19.230 or later to mitigate this issue. For further support and assistance in vulnerability remediation, please contact DevNack.com.
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FAQ
The veth package is a virtual Ethernet device driver in the Linux Kernel that provides a virtual network interface for communication between network namespaces or containers.
A race condition is a situation in which the behavior of a system depends on the relative timing of events, which can lead to unpredictable and potentially harmful outcomes.
The impact of this vulnerability is not yet proven, but it has the potential to result in security vulnerabilities and inconsistent system state.
To fix this vulnerability, update the Linux Kernel to version v4.19.230 or later, which includes the necessary fix.
For more information about this vulnerability, refer to the official Linux Kernel repository and the provided references.
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