Detections
Analytics

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 19216.655.6

high Tenable Cloud Security Plugin ID 469470

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: fhandle: reject detached mounts in
 capable_wrt_mount() The recent fhandle RCU fix moved the mount namespace capability check into
 capable_wrt_mount(), so a non-NULL mnt_namespace survives the ns_capable() dereference. The helper still
 assumes the later READ_ONCE(mount->mnt_ns) must be non-NULL because may_decode_fh() checked is_mounted()
 first. That assumption is not stable. A detached mount from open_tree(..., OPEN_TREE_CLONE) can be
 dissolved on fput while open_by_handle_at() is between those checks, and umount_tree() can clear
 mount->mnt_ns. If the helper observes NULL, it dereferences mnt_ns->user_ns and panics. Return false when
 the RCU read observes a detached mount. This keeps the relaxed permission path conservative: a mount no
 longer attached to a namespace cannot authorize open_by_handle_at() access. (CVE-2026-72034)

Solution

Update the sys-kernel/cchost-kernel-6_12 library and its related packages to version 19216.655.6 or later.

See Also

https://storage.googleapis.com/cos-oval-vulnerability-feed/cos-125.oval.xml.tar.gz

Plugin Details

Severity: High

ID: 469470

Version: Revision 1.6

Type: Local

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: 58.16

Vendor

Vendor Severity: LOW

CVSS v2

Risk Factor: Medium

Base Score: 6.8

Temporal Score: 5

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

CVSS Score Source: CVE-2026-72034

CVSS v3

Risk Factor: High

Base Score: 7.8

Temporal Score: 6.8

Vector: CVSS:3.0/AV:L/AC:L/PR:L/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: 8/11/2026

Reference Information

CVE: CVE-2026-72034