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 19216.395.101

medium Tenable Self-Hosted Container Security Plugin ID 469359

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: tpm: Use kfree_sensitive() to free
auth session in tpm_dev_release() tpm_dev_release() uses plain kfree() to free chip->auth, which contains
sensitive cryptographic material including HMAC session keys, nonces, and passphrase data (struct
tpm2_auth). Every other code path that frees this structure uses kfree_sensitive() to zero the memory
before releasing it: both tpm2_end_auth_session() and tpm_buf_check_hmac_response() do so. The
tpm_dev_release() path is the only one that does not, leaving key material in freed slab memory until it
is eventually overwritten. Use kfree_sensitive() for consistency with the rest of the driver and to ensure
session keys are scrubbed during device teardown. (CVE-2026-46283)

Solution

Update the sys-kernel/cchost-kernel-6_12 library and its related packages to version 19216.395.101 or later.

Plugin Details

Severity: Medium

ID: 469359

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: Low

Score: 3

Percentile: 23.75

Vendor

Vendor Severity: MEDIUM

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-2026-46283

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: 5/26/2026

Reference Information

CVE: CVE-2026-46283

Detections

Analytics