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 19506.120.97

medium Tenable Cloud Security Plugin ID 472024

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: nfs: return EISDIR on nfs3_proc_create
if d_alias is a dir If we found an alias through nfs3_do_create/nfs_add_or_obtain /d_splice_alias which
happens to be a dir dentry, we don't return any error, and simply forget about this alias, but the
original dentry we were adding and passed as parameter remains negative. This later causes an oops on
nfs_atomic_open_v23/finish_open since we supply a negative dentry to do_dentry_open. This has been
observed running lustre-racer, where dirs and files are created/removed concurrently with the same name
and O_EXCL is not used to open files (frequent file redirection). While d_splice_alias typically returns a
directory alias or NULL, we explicitly check d_is_dir() to ensure that we don't attempt to perform file
operations (like finish_open) on a directory inode, which triggers the observed oops. (CVE-2026-43470)

Solution

Update the sys-kernel/cchost-kernel-6_12 library and its related packages to version 19506.120.97 or later.

Plugin Details

Severity: Medium

ID: 472024

Version: Revision 1.2

Type: Local

Family: Google COS Security Checks

Published: 10/3/2026

Updated: 10/3/2026

Risk Information

VPR

Risk Factor: Low

Score: 3

Percentile: 23.71

Vendor

Vendor Severity: LOW

CVSS v2

Risk Factor: Medium

Base Score: 4.6

Temporal Score: 3.4

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

CVSS Score Source: CVE-2026-43470

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: 4/30/2026

Reference Information

CVE: CVE-2026-43470

Detections

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