CVE-2026-99047: gve: fix XSK buffer leak when rings are stopped

Published Oct 23, 2026

Updated

In the Linux kernel, the following vulnerability has been resolved:

gve: fix XSK buffer leak when rings are stopped

GVE does not free XSK buffers when resetting ring state as a part of stopping queues. This causes all XSK buffers which are posted to the NIC to be leaked.

Free XSK buffers attached to an allocated bufstate when stopping rings.

This issue was hit in production.

Affected Software

1 affected component

Linux Linux kernel

Event History

Oct 23, 2026

CVE Published

via MITRE·12:22 PM

Data Sourced

via MITRE·12:22 PM

Description

Frequently Asked Questions

Which systems are exposed to this leak?

Systems using the Linux kernel GVE driver with XSK buffers posted to the NIC are exposed when their queues are stopped and ring state is reset.

What condition triggers the issue?

The leak occurs when queues are stopped: GVE resets ring state but does not free XSK buffers attached to an allocated buffer state. Buffers previously posted to the NIC can then remain leaked.

How can I tell whether a system may already be affected?

A potentially affected system has used GVE with XSK buffers and has stopped queues or reset ring state. The provided information does not specify a diagnostic, log message, or version range for confirming leaked buffers.

CVE-2026-99047: gve: fix XSK buffer leak when rings are stopped

Affected Software

Event History

Frequently Asked Questions

Which systems are exposed to this leak?

What condition triggers the issue?

How can I tell whether a system may already be affected?

Company

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Frequently Asked Questions

Which systems are exposed to this leak?

What condition triggers the issue?

How can I tell whether a system may already be affected?