Openvswitch: Stack Out-of-Bounds Read Vulnerability
Summary
GSD-2021-1000111: openvswitch: fix stack OOB read while fragmenting IPv4 packets. Affects Kernel versions >= d52e5a7e7ca49457dd31fc8b42fb7c0d58a31221, < d841d3cf5297fde4ce6a41ff35451d0e82917f3e. 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. It provides network connectivity and switching capabilities for virtual machines. The vulnerability in Openvswitch allows for a stack out-of-bounds read while fragmenting IPv4 packets.
Vulnerability Detail
The stack out-of-bounds read vulnerability in Openvswitch occurs during the process of fragmenting IPv4 packets. An attacker can exploit this vulnerability to read data from adjacent memory locations, potentially leading to information disclosure or a denial of service. The vulnerability was introduced in version v4.16 of the Linux Kernel and has been fixed in version v5.11.20.
How To Fix
No fixed version is published for this vulnerability.
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Workaround
There is no known workaround for this vulnerability.
Conclusion
The stack out-of-bounds read vulnerability in Openvswitch can be mitigated by updating the Linux Kernel to version v5.11.20 or later. It is important to apply the necessary patches to ensure the security of the system. 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 provide network connectivity and switching capabilities for virtual machines.
A stack out-of-bounds read vulnerability occurs when a program reads data from a memory location outside the bounds of a stack buffer. This can lead to information disclosure or a denial of service.
The vulnerability in Openvswitch could potentially allow an attacker to read sensitive data from adjacent memory locations or cause a denial of service.
To fix this vulnerability, update the Linux Kernel to version v5.11.20 or later by applying the commit d841d3cf5297fde4ce6a41ff35451d0e82917f3e.
No, there is no known workaround for this vulnerability.
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