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 475538

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: net: fix a resource leak in
copy_net_ns() error handling path Currently, preinit_net() does two things: (1) call ns_common_init()
which might fail (2) initialize resources which does not fail However, preinit_net() is returning early
when (1) fails, and copy_net_ns() is jumping to the dec_ucounts: label. As a result, resources allocated
by net_alloc() are leaking. We need to call key_remove_domain() and net_passive_dec() in order to release
resources allocated by net_alloc(). We cannot simply jump to the put_userns: label when preinit_net()
failed, for (2) is not yet done. But we can reorder (1) and (2), for there is no dependency between (1)
and (2). Therefore, this patch decouples (1) from preinit_net() and changes preinit_net() back to a void
function, and calls ns_common_init() after preinit_net() succeeded. Then, we can jump to immediately after
ns_common_free() of the put_userns: label. (CVE-2026-90077)

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: 475538

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: 23.62

Vendor

Vendor Severity: LOW

CVSS v2

Risk Factor: Low

Base Score: 2.1

Temporal Score: 1.6

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

CVSS Score Source: CVE-2026-90077

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: 9/17/2026

Reference Information

CVE: CVE-2026-90077

Detections

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