Detections
Analytics

Google: sys-kernel/cchost-kernel-6_18, sys-kernel/csql-kernel-6_18, sys-kernel/lakitu-kernel-6_18, sys-kernel/lakitu-nc-kernel-6_18: security update to 19907.0.0

medium Tenable Self-Hosted Container Security Plugin ID 471236

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/dma: Do not try to iommu_map a 0
 length region in swiotlb iommu_dma_iova_link_swiotlb() processes a mapping that is unaligned in three
 parts, the head, middle and trailer. If the middle is empty because there are no aligned pages it will
 call down to iommu_map() with a 0 size which the iommupt implementation will fail as illegal. It then
 tries to do an error unwind and starts from the wrong spot corrupting the mapping so the eventual
 destruction triggers a WARN_ON. Check for 0 length and avoid mapping and use offset not 0 as the starting
 point to unlink. This is frequently triggered by using some kinds of thunderbolt NVMe drives that trigger
 forced SWIOTLB for unaligned memory. NVMe seems to pass in oddly aligned buffers for the passthrough
 commands from smartctl that hit this condition. (CVE-2026-53164)

Solution

Update the sys-kernel/cchost-kernel-6_18 library and its related packages to version 19907.0.0 or later.

See Also

https://storage.googleapis.com/cos-oval-vulnerability-feed/cos-133.oval.xml.tar.gz

Plugin Details

Severity: Medium

ID: 471236

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: 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-2026-53164

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: 6/25/2026

Reference Information

CVE: CVE-2026-53164