Google: sys-kernel/cchost-kernel-6_12, sys-kernel/cchost-kernel-6_18, sys-kernel/csql-kernel-6_12, sys-kernel/csql-kernel-6_18, sys-kernel/lakitu-kernel-6_12, sys-kernel/lakitu-kernel-6_18, sys-kernel/lakitu-nc-kernel-6_12, sys-kernel/lakitu-nc-kernel-6_18: security update to 19862.0.0

high Tenable Self-Hosted Container Security Plugin ID 470320

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: netfilter: nfnetlink_osf: fix
potential NULL dereference in ttl check The nf_osf_ttl() function accessed skb->dev to perform a local
interface address lookup without verifying that the device pointer was valid. Additionally, the
implementation utilized an in_dev_for_each_ifa_rcu loop to match the packet source address against local
interface addresses. It assumed that packets from the same subnet should not see a decrement on the
initial TTL. A packet might appear it is from the same subnet but it actually isn't especially in modern
environments with containers and virtual switching. Remove the device dereference and interface loop.
Replace the logic with a switch statement that evaluates the TTL according to the ttl_check.
(CVE-2026-52998)

Solution

Update the sys-kernel/cchost-kernel-6_12 library and its related packages to version 19862.0.0 or later.

Plugin Details

Severity: High

ID: 470320

Version: Revision 1.6

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: Medium

Score: 5.7

Percentile: 96.04

Vendor

Vendor Severity: HIGH

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-2026-52998

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: 6/3/2026

Reference Information

CVE: CVE-2026-52998

Detections

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