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 475657

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: tls: reject the combination of TLS and
sockmap TLS and sockmap (BPF psock) integration hides a lot of latent bugs. Bugs which may be more or less
relevant for real users but they are definitely exploitable. We could not find anyone actively using this
integration so let's reject this config. Adding a TLS socket to a sockmap was already rejected by
sk_psock_init() through the inet_csk_has_ulp() check. We need to reject the attempts to configure the TLS
keys (rather than adding the ULP itself) because checking prior to the ULP installation is tricky without
risking a race with sockmap getting added in parallel (sockmap does not hold the socket lock). This patch
is a minimal rejection of the feature. Subsequent patch in the series will do a light dead code removal.
Full cleanup would require a major rewrite of the Tx path, we don't need skmsg any more. (CVE-2026-93824)

Solution

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

See Also

https://storage.googleapis.com/cos-oval-vulnerability-feed/cos-138.oval.xml.tar.gz

Plugin Details

Severity: Medium

ID: 475657

Version: Revision 1.1

Type: Local

Published: 10/16/2026

Updated: 10/16/2026

Risk Information

VPR

Risk Factor: Low

Score: 3

Percentile: 23.74

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-2026-93824

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: 9/24/2026

Reference Information

CVE: CVE-2026-93824