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 Self-Hosted Container Security Plugin ID 475493

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: x86/amd_node: Fix potential NULL
pointer dereference amd_smn_read/write() are exported functions around __amd_smn_rw(), so they are always
available even if amd_smn_init() fails. In that case, 'amd_roots' is NULL and __amd_smn_rw() will access
uninitialized memory. Then, commit: 83518453074d ("x86/amd_node: Add SMN offsets to exclusive region
access") added the 'smn_exclusive' flag, which indicated the calls to
pci_request_config_region_exclusive() succeeded, to prevent concurrent userspace access. Commit:
0a4b61d9c2e4 ("x86/amd_node: Fix AMD root device caching") re-ordered initialization so
pci_request_config_region_exclusive() is called earlier and a failure exits amd_smn_init() before
allocating 'amd_roots'. The setting of 'smn_exclusive' moved to the end of amd_smn_init(), after
'amd_roots' is allocated. It became redundant and can be removed. Replace 'smn_exclusive' with directly
checking 'amd_roots', to fix a potential NULL pointer dereference and to simplify the logic. [ bp: Reorg
commit message, touchup comment. ] [ mingo: Rebase & further touchups. ] (CVE-2026-97947)

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: 475493

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: 23.7

Vendor

Vendor Severity: LOW

CVSS v2

Risk Factor: Medium

Base Score: 4.9

Temporal Score: 3.6

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

CVSS Score Source: CVE-2026-97947

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-2026-97947

Detections

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