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

Severity: unknown
Exploited in the wild: not listed in CISA KEV
EPSS: 0.2% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-10-23 · updated 2026-10-23

Description

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 buf_state when stopping rings. This issue was hit in production.

Affected products

Linux kernel: 6.17 — fixed in 7.3

How to fix

Upgrade to a fixed version: Linux kernel 7.3. Check the vendor advisory for mitigations.

References

https://git.kernel.org/stable/c/506f9de069d07a72b9887ce3edd2fdf32f4953aa
https://git.kernel.org/stable/c/73670ddb91a4d22e1deb3efd962242de1ec48e90
https://git.kernel.org/stable/c/7a7e6bbbf0586c1f62f0cc7d9a2877d8a5e5aaf7

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