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 19506.448.8

critical Tenable Self-Hosted Container Security Plugin ID 470427

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: nvmet-auth: reject short AUTH_RECEIVE
buffers nvmet_execute_auth_receive() trusts the AUTH_RECEIVE allocation length after checking only that it
is nonzero and matches the transfer length. In the SUCCESS1 and FAILURE1/default states, that lets a
remote NVMe-oF initiator reach the fixed-size DH-HMAC-CHAP response builders with a kmalloc() buffer
shorter than the response, so nvmet_auth_success1() and nvmet_auth_failure1() write past the allocation;
both only WARN_ON the short length and then format the message anyway. Impact: A remote NVMe-oF initiator
with access to an auth-enabled target can trigger a 16-byte heap out-of-bounds write via a one-byte
AUTH_RECEIVE allocation length. Compute the minimum response length for the current DH-HMAC-CHAP step in
nvmet_auth_receive_data_len() and report a zero data length when the host-supplied allocation length is
shorter, so the existing zero-length check in nvmet_execute_auth_receive() rejects the command before any
builder runs. The SUCCESS1 minimum is sizeof(struct nvmf_auth_dhchap_success1_data) plus the HMAC hash
length, because the response hash is written into the rval[] flexible-array tail, so the minimum is state
dependent rather than a flat sizeof. CHALLENGE keeps its existing variable-length guard in
nvmet_auth_challenge(). This is reachable only when in-band DH-HMAC-CHAP authentication is configured on
the target. (CVE-2026-72130)

Solution

Update the sys-kernel/cchost-kernel-6_12 library and its related packages to version 19506.448.8 or later.

Plugin Details

Severity: Critical

ID: 470427

Version: Revision 1.5

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: High

Score: 7.7

Percentile: 99.01

Vendor

Vendor Severity: LOW

CVSS v2

Risk Factor: Critical

Base Score: 10

Temporal Score: 7.4

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

CVSS Score Source: CVE-2026-72130

CVSS v3

Risk Factor: Critical

Base Score: 9.8

Temporal Score: 8.5

Vector: CVSS:3.0/AV:N/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: 8/11/2026

Reference Information

CVE: CVE-2026-72130

Detections

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