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 19506.505.8

medium Tenable Self-Hosted Container Security Plugin ID 472726

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: iommu/sva: Set handle->dev before the
SVA handle is visible iommu_attach_device_pasid() installs the new SVA attach handle in the group PASID
lookup before iommu_sva_bind_device() returns. A concurrent bind can therefore find and reuse the same
handle after iommu_sva_lock is dropped. handle->dev was initialized after dropping iommu_sva_lock. This
leaves a window where a racing bind can return a handle whose dev pointer is still NULL. A subsequent
iommu_sva_unbind_device() can then dereference it via handle->dev->iommu_group. Initialize handle->dev
before releasing iommu_sva_lock so any visible SVA handle is fully initialized. (CVE-2026-89451)

Solution

Update the sys-kernel/cchost-kernel-6_12 library and its related packages to version 19506.505.8 or later.

Plugin Details

Severity: Medium

ID: 472726

Version: Revision 1.3

Type: Local

Family: Google COS Security Checks

Published: 10/5/2026

Updated: 10/6/2026

Supported Sensors: Tenable Cloud Security, Tenable Self-Hosted Container Security

Risk Information

VPR

Risk Factor: Low

Score: 3

Percentile: 23.7

Vendor

Vendor Severity: LOW

CVSS v2

Risk Factor: Medium

Base Score: 4.9

Temporal Score: 3.6

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

CVSS Score Source: CVE-2026-89451

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: 9/11/2026

Reference Information

CVE: CVE-2026-89451

Detections

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