Openvswitch: Fix Setting IPv6 Fields Causing HW Csum Failure
Summary
GSD-2022-1000912: openvswitch: Fix setting ipv6 fields causing hw csum failure. Affects Kernel versions >= 3fdbd1ce11e5c0d7cafbe44c942c5cad61113d7b, < 99e6d88878090929953f68cf3e15ee72a9a37941. No fix is published. How to fix ↓
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Background
Openvswitch is a software-based virtual switch that is commonly used in virtualized environments to connect virtual machines (VMs) and physical networks. It provides network connectivity and enables communication between VMs and external networks. Openvswitch is a part of the Linux Kernel ecosystem and is widely used in various Linux distributions.
This vulnerability in Openvswitch affects the handling of IPv6 fields, which can result in hardware checksum (hw csum) failures. The issue was introduced in version v3.8 of the Linux Kernel and has been fixed in version v4.19.232.
The vulnerability can potentially lead to network connectivity issues and incorrect checksum calculations, which may impact the integrity and reliability of network communications.
Vulnerability Detail
The vulnerability arises from a flaw in the Openvswitch code that handles the setting of IPv6 fields. When certain IPv6 fields are modified, it can cause hardware checksum failures. This can result in incorrect checksum calculations and network connectivity issues.
An attacker could potentially exploit this vulnerability to manipulate network traffic, bypass security controls, or cause denial-of-service conditions.
The vulnerability was fixed in Linux Kernel version v4.19.232 by commit 99e6d88878090929953f68cf3e15ee72a9a37941.
How To Fix
No fixed version is published for this vulnerability.
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Workaround
There is no specific workaround available for this vulnerability. The recommended solution is to update the Linux Kernel to the fixed version.
Conclusion
The vulnerability in Openvswitch that caused hardware checksum failures when setting IPv6 fields has been fixed in Linux Kernel version v4.19.232. It is important to update the Linux Kernel to the fixed version to ensure network connectivity and integrity. For further support on vulnerability remediation, please contact DevNack.com.
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FAQ
Openvswitch is a software-based virtual switch used in virtualized environments to connect virtual machines (VMs) and physical networks.
The vulnerability can result in network connectivity issues and incorrect checksum calculations, potentially impacting the integrity and reliability of network communications.
To fix this vulnerability, update the Linux Kernel to version v4.19.232 or later.
The vulnerability could potentially be exploited remotely if an attacker can send specially crafted network traffic to the affected system.
Yes, the vulnerability has been fixed in Linux Kernel version v4.19.232.
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