Google: sys-kernel/cchost-kernel-6_18, sys-kernel/csql-kernel-6_18, sys-kernel/lakitu-kernel-6_18, sys-kernel/lakitu-nc-kernel-6_18: security update to 20198.0.0

medium Tenable Cloud Security Plugin ID 475787

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: ice: add missing xa_destroy for
sched_node_ids Commit 16dfa49406bc ("ice: Introduce new parameters in ice_sched_node") added a
sched_node_ids xarray to the port info structure, but never called xa_destroy on it. Since xarrays can
allocate internal memory, this can result in a memory leak even if every element in the xarray has been
removed. The xarray is currently embedded in the port_info structure. This appears to have been done
because its use is within functions that take the port_info as a primary argument. However, this
complicates managing the lifecycle of the field. The port_info structure is allocated in ice_init_hw()
using devm, and it is not released until the devm cleanup when the driver is unloaded. The ice_init_hw()
function is called in many places, including devlink reload, and possibly during DDP load after updating
the Tx scheduler layout. Adding a call of xa_destroy to the ice_deinit_hw() causes Sashiko to raise
multiple concerns due to potential ordering issues and possible ways that port_info could be a dangling
reference. To handle this, move the sched_node_ids out of port_info and into the hw structure. All users
of the array already have a pointer to hw anyways, and there is only one sched_node_ids per adapter. While
here, remove the overly verbose comment explaining the nature of the sched_node_ids xarray. Add the
missing xa_destroy to the cleanup path and to ice_deinit_hw(), ensuring that we properly release the
xarray memory. This was caught by Sashiko during development of unrelated code. (CVE-2026-97979)

Solution

Update the sys-kernel/cchost-kernel-6_18 library and its related packages to version 20198.0.0 or later.

Plugin Details

Severity: Medium

ID: 475787

Version: Revision 1.1

Type: Local

Family: Google COS Security Checks

Published: 10/16/2026

Updated: 10/16/2026

Risk Information

VPR

Risk Factor: Low

Score: 3

Percentile: 23.63

Vendor

Vendor Severity: LOW

CVSS v2

Risk Factor: High

Base Score: 7.2

Temporal Score: 5.3

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

CVSS Score Source: CVE-2026-97979

CVSS v3

Risk Factor: Medium

Base Score: 5.5

Temporal Score: 4.8

Vector: CVSS:3.0/AV:L/AC:L/PR:L/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: 9/25/2026

Reference Information

CVE: CVE-2026-97979

Detections

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