SB20261023107 - Memory leak in Linux kernel google gve driver

Description

This security bulletin contains information about 1 vulnerability.

1) Memory leak (CVE-ID: CVE-2026-99046)

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

CVSSv4: 2 [CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]

The vulnerability allows a local user to potentially exhaust memory and cause a denial of service.

The vulnerability exists due to failure to release XSK buffers in the Linux kernel gve driver's gve_rx_dqo() function when processing RX completion descriptors with the error bit set. A local user can potentially trigger repeated processing of these descriptors to accumulate unreleased buffers and exhaust available memory.

The leak occurs when using AF_XDP zero-copy mode.

Remediation

Install update from vendor's website.

References

• https://git.kernel.org/stable/c/06656aaa7e43ae62b673c2244d27099b8b94a70d
• https://git.kernel.org/stable/c/889f763874855c575429f75946132a53c573aa14
• https://git.kernel.org/stable/c/9fed6a8ab8a5bacba2c709cb19d2dd6d2fa9112e