SB20261023108 - Memory leak in Linux kernel google gve driver

Description

This security bulletin contains information about 1 vulnerability.

1) Memory leak (CVE-ID: CVE-2026-99047)

CWE-ID: CWE-401 - Missing release of memory after effective lifetime

CVSSv4: 6.7 [CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

The vulnerability allows a local privileged user to exhaust XSK buffer resources, potentially causing a denial of service.

The vulnerability exists due to failure to release XSK buffers in the Linux kernel GVE driver's gve_rx_reset_ring_dqo() function when resetting receive ring state during queue shutdown. A local privileged user can trigger affected queue-stop operations to leak buffers posted to the NIC, potentially exhausting buffer resources and causing a denial of service.

Remediation

Install update from vendor's website.

References

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