Openvswitch: Stack Out-of-Bounds Read Vulnerability

Kernel Updated 02 Oct 2025

Summary

31/05/2021

Disclosed on

N/A

Severity

No i

Fix available

Unrated

Severity

Not published

CVSS Score

GSD-2021-1000145: openvswitch: fix stack OOB read while fragmenting IPv4 packets. Affects Kernel versions >= d52e5a7e7ca49457dd31fc8b42fb7c0d58a31221, < a1478374b0bda89b4277a8afd39208271faad4be. 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 and physical networks. It provides network virtualization capabilities and is widely used in cloud computing platforms. The vulnerability in Openvswitch allows for a stack out-of-bounds read while fragmenting IPv4 packets.

Vulnerability Detail

The vulnerability in Openvswitch arises when fragmenting IPv4 packets. It results in a stack out-of-bounds read, which can potentially lead to information disclosure or a denial of service. An attacker could exploit this vulnerability by sending specially crafted IPv4 packets to a vulnerable system. This vulnerability was introduced in version 4.16 of the Linux Kernel and was fixed in version 5.10.36. 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 stack out-of-bounds read vulnerability in Openvswitch while fragmenting IPv4 packets can have serious security implications. It is crucial to update the Linux Kernel to version 5.10.36 or later to mitigate this vulnerability. For further support on vulnerability remediation, please contact DevNack.com.

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