Google: sys-kernel/cchost-kernel-6_12, sys-kernel/csql-kernel-6_12, sys-kernel/lakitu-kernel-6_12, sys-kernel/lakitu-nc-kernel-6_12: security update to 19506.299.161

high Tenable Self-Hosted Container Security Plugin ID 469444

Description

There are packages installed that are affected by a vulnerability referenced in the following CVE:

- In the Linux kernel, the following vulnerability has been resolved: gve: fix Rx queue stall on alloc
failure When the system is under extreme memory pressure, page allocations can fail during the Rx buffer
refill loop. If the number of buffers posted to hardware falls below a critical low threshold and the
refill loop exits due to allocation failures, the queue can stall: 1. The device drops incoming packets
because there are no descriptors. 2. Since no packets are processed, no Rx completions are generated. 3.
Because no completions occur, NAPI is never scheduled, preventing the refill loop from running again even
after memory is freed. This results in a permanent queue stall. Resolve this by introducing a starvation
recovery timer for each Rx queue. If the number of buffers posted to hardware falls below a critical low
threshold, start a timer to periodically reschedule NAPI. Once NAPI runs and successfully refills the
queue above the threshold, the timer is not rescheduled. The threshold is set to 32 because a single
maximum-sized Receive Segment Coalescing (RSC) packet can consume up to 19 descriptors in the Rx path.
Lower thresholds (such as 8 or 16) would be insufficient to process a complete maximum-sized RSC packet,
risking packet drops or unexpected hardware behavior under memory pressure. Setting the threshold to 32
guarantees a safe margin to handle at least one full RSC packet. (CVE-2026-68129)

Solution

Update the sys-kernel/cchost-kernel-6_12 library and its related packages to version 19506.299.161 or later.

Plugin Details

Severity: High

ID: 469444

Version: Revision 1.5

Type: Local

Family: Google COS Security Checks

Published: 10/3/2026

Updated: 10/6/2026

Supported Sensors: Tenable Cloud Security, Tenable Self-Hosted Container Security

Risk Information

VPR

Risk Factor: Low

Score: 3

Percentile: 23.58

Vendor

Vendor Severity: LOW

CVSS v2

Risk Factor: High

Base Score: 7.8

Temporal Score: 5.8

Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:C

CVSS Score Source: CVE-2026-68129

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.5

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

Exploit Ease: No known exploits are available

Vulnerability Publication Date: 8/10/2026

Reference Information

CVE: CVE-2026-68129

Detections

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