Google: sys-kernel/cchost-kernel-6_12, sys-kernel/csql-kernel-6_12, sys-kernel/lakitu-kernel-6_12, sys-kernel/lakitu-nc-kernel-6_12: security update to 19506.224.80

high Tenable Cloud Security Plugin ID 468892

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: ppp: require CAP_NET_ADMIN in target
netns for unattached ioctls /dev/ppp open is currently authorized against file->f_cred->user_ns, while
unattached administrative ioctls operate on current->nsproxy->net_ns. As a result, a local unprivileged
user can create a new user namespace with CLONE_NEWUSER, gain CAP_NET_ADMIN only in that new user
namespace, and still issue PPPIOCNEWUNIT, PPPIOCATTACH, or PPPIOCATTCHAN against an inherited network
namespace. Require CAP_NET_ADMIN in the user namespace that owns the target network namespace before
handling unattached PPP administrative ioctls. This preserves normal pppd operation in the network
namespace it is actually privileged in, while rejecting the userns-only inherited-netns case.
(CVE-2026-53075)

Solution

Update the sys-kernel/cchost-kernel-6_12 library and its related packages to version 19506.224.80 or later.

Plugin Details

Severity: High

ID: 468892

Version: Revision 1.1

Type: Local

Family: Google COS Security Checks

Published: 10/3/2026

Updated: 10/3/2026

Risk Information

VPR

Risk Factor: High

Score: 7.8

Percentile: 99.33

Vendor

Vendor Severity: HIGH

CVSS v2

Risk Factor: Medium

Base Score: 6.8

Temporal Score: 5.3

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

CVSS Score Source: CVE-2026-53075

CVSS v3

Risk Factor: High

Base Score: 8.8

Temporal Score: 7.9

Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

Temporal Vector: CVSS:3.0/E:P/RL:O/RC:C

Vulnerability Information

Exploit Available: true

Exploit Ease: Exploits are available

Vulnerability Publication Date: 6/3/2026

Reference Information

CVE: CVE-2026-53075

Detections

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