Race Condition Vulnerability in ibmvnic Package
Summary
GSD-2022-1001515: ibmvnic: fix race between xmit and reset. Affects Kernel versions >= 7ed5b31f4a6695a21f617df07646e9b15c6c1d29, < 475f9cce98b63bc145b4efa66fa51175d4cb345f. No fix is published. How to fix ↓
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Background
The ibmvnic package is a driver for IBM Virtual NIC devices in the Linux Kernel. It provides support for network connectivity in IBM Power Systems. The package allows virtual NIC devices to communicate with the underlying hardware and enables network functionality for virtual machines running on IBM Power Systems. However, a race condition vulnerability has been discovered in the ibmvnic package, which can lead to unexpected behavior and potential security risks.
Vulnerability Detail
The race condition vulnerability in the ibmvnic package occurs when there is a race between the transmission (xmit) of network packets and the reset operation. This vulnerability can be exploited by an attacker to cause a denial-of-service (DoS) condition or potentially execute arbitrary code. The race condition arises due to improper synchronization between the xmit and reset operations, allowing for inconsistent state transitions and potential memory corruption. This vulnerability was introduced in version v5.4 of the Linux Kernel and has been fixed in version v5.16.19.
How To Fix
No fixed version is published for this vulnerability.
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Workaround
As a temporary workaround, users can disable the ibmvnic driver or unload the module to prevent potential exploitation of the race condition vulnerability. This can be achieved by executing the following commands as root:
modprobe -r ibmvnic
Conclusion
In conclusion, the race condition vulnerability in the ibmvnic package can pose a significant risk to systems running the affected versions of the Linux Kernel. It is crucial to update to the fixed version (v5.16.19 or later) or apply the recommended workaround to mitigate the vulnerability. For further support and assistance in vulnerability remediation, please contact DevNack.com.
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FAQ
The race condition vulnerability in the ibmvnic package can lead to a denial-of-service (DoS) condition or potential execution of arbitrary code. An attacker may be able to disrupt network connectivity or gain unauthorized access to the system.
You can use the Vulert Playground (https://vulert.com/scanner) to check if your system is affected by this vulnerability. Simply upload your package-lock.json file and Vulert will analyze it for any open-source vulnerabilities, including the race condition vulnerability in the ibmvnic package.
Yes, a patch for this vulnerability has been released in version v5.16.19 of the Linux Kernel. It is recommended to update to this version or a later one to mitigate the risk.
As a temporary workaround, you can disable the ibmvnic driver or unload the module to prevent potential exploitation of the race condition vulnerability. However, it is strongly advised to update to the fixed version of the Linux Kernel as soon as possible.
You can find more information about this vulnerability in the GSD-2022-1001515 JSON file available on the GitHub repository of the Cloud Security Alliance's GSD Database (https://github.com/cloudsecurityalliance/gsd-database/blob/main/2022/1001xxx/GSD-2022-1001515.json).
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