net: ipv6: ensure we call ipv6_mc_down() at most once
Summary
GSD-2022-1000700: net: ipv6: ensure we call ipv6_mc_down() at most once. Affects Kernel versions >= 3ce62a84d53cd3d3cc5377bbf339e9b08ddf9c36, < 72124e65a70b84e6303a5cd21b0ac1f27d7d61a4. No fix is published. How to fix ↓
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Background
The vulnerability affects the Kernel package in the Linux ecosystem. The Kernel is the core component of the operating system that manages system resources and provides an interface for software to interact with the hardware. It includes various subsystems, including networking. The vulnerability specifically impacts the IPv6 multicast (ipv6_mc) functionality in the Kernel.
Vulnerability Detail
The vulnerability arises from a flaw in the IPv6 multicast implementation, where the function ipv6_mc_down() is called multiple times, potentially leading to incorrect behavior or crashes. The vulnerability was introduced in version v3.18 of the Linux Kernel and has been fixed in version v5.16.13. The impact and attack plausibility of the vulnerability have not yet been proven.
How To Fix
No fixed version is published for this vulnerability.
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Workaround
No specific workaround has been provided for this vulnerability.
Conclusion
The vulnerability in the Kernel package's IPv6 multicast functionality can potentially lead to incorrect behavior or crashes. It is recommended to update the Linux Kernel to version v5.16.13 or later to mitigate this vulnerability. For further support on vulnerability remediation, please contact DevNack.com.
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FAQ
The impact of this vulnerability is currently unknown as the attack plausibility has not been proven. However, it could potentially lead to incorrect behavior or crashes in systems utilizing the affected Kernel version.
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 to the playground and it will provide real-time monitoring and alerts for open-source vulnerabilities.
Yes, a patch for this vulnerability is available in version v5.16.13 of the Linux Kernel. It is recommended to update to this version or later to mitigate the vulnerability.
There are currently no known exploits for this vulnerability. However, it is still important to apply the patch or update to the fixed version to ensure the system is protected.
You can find more information about this vulnerability in the GSD-2022-1000700.json file available in the GSD database on GitHub (https://github.com/cloudsecurityalliance/gsd-database/blob/main/2022/1000xxx/GSD-2022-1000700.json).
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