Null Pointer Dereference in net: nexthop
Summary
GSD-2021-1002437: net: nexthop: fix null pointer dereference when IPv6 is not enabled. Affects Kernel versions >= 53010f991a9f5e4ed2db705ddde6ff32709192a2, < 7b6f44856da5ba0b1aa61403eb9fddd272156503. No fix is published. How to fix ↓
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Background
The net package in the Linux Kernel is responsible for handling network-related operations. It provides various functionalities for managing network interfaces, routing, and traffic control. The nexthop component within the net package is responsible for selecting the next hop for routing packets. This vulnerability affects the nexthop component when IPv6 is not enabled.
Vulnerability Detail
The vulnerability in the nexthop component arises from a null pointer dereference when IPv6 is not enabled. This means that under certain conditions, a null pointer is accessed, leading to a crash or potential code execution. The impact and attack plausibility of this vulnerability have not been proven yet.
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 null pointer dereference vulnerability in the net: nexthop component of the Linux Kernel can be fixed by updating to version v5.4.163 or later. It is recommended to apply the update to ensure the vulnerability is addressed. For further support on vulnerability remediation, please contact DevNack.com.
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FAQ
The impact of this vulnerability is not yet proven. However, it could potentially lead to crashes or code execution.
You can use the Vulert Playground at Vulert Scanner to check if your system is affected by this vulnerability. Simply upload your package-lock.json file to the playground and it will alert you in real-time.
There is no known exploit for this vulnerability at the moment.
It is recommended to update the Linux Kernel to the latest version to fully address this vulnerability. Mitigating the risk without updating may not provide complete protection.
You can find more information about this vulnerability in the GSD-2021-1002437.json file available at https://github.com/cloudsecurityalliance/gsd-database.
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