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 19506.299.82

high Tenable Self-Hosted Container Security Plugin ID 469869

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: vfio: Remove device debugfs before
releasing devres VFIO device debugfs files created with debugfs_create_devm_seqfile() store a devres
allocated debugfs_devm_entry as inode private data. vfio_unregister_group_dev() currently calls
vfio_device_del() before vfio_device_debugfs_exit(), but device_del() releases devres. This can leave
debugfs entries visible with stale inode private data while unregister waits for userspace references to
drain. Remove the per-device debugfs tree before vfio_device_del(). The debugfs view is diagnostic only,
so losing it at the start of unregister is preferable to preserving entries whose backing storage may
already have been released. Complete the teardown by clearing the per-device debugfs root after removal.
This matches the global debugfs root cleanup and prevents future users from mistaking a removed dentry for
a live debugfs tree during the remainder of unregister. (CVE-2026-64473)

Solution

Update the sys-kernel/cchost-kernel-6_12 library and its related packages to version 19506.299.82 or later.

Plugin Details

Severity: High

ID: 469869

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: 4.9

Percentile: 58.15

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-2026-64473

CVSS v3

Risk Factor: High

Base Score: 8.4

Temporal Score: 7.3

Vector: CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/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: 7/23/2026

Reference Information

CVE: CVE-2026-64473

Detections

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