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 19999.44.106

critical Tenable Self-Hosted Container Security Plugin ID 475336

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: KVM: arm64: Correctly handle end of VA
 space TLBI invalidation Our TLB invalidation by VA code is based on comparing two ranges, one defined by
 the TLB, and one defined by the TLBI instruction. Each range is defined by a start and a size. However,
 the way the comparison is done doesn't account for address rollover, as it compares an address with (base
 + size). This works nicely until this expression represent the last page/block in the TTBR1 VA space, as
 the result is a big fat 0. And a failed TLB invalidation. Rewrite the comparison in a way that is immune
 to the address rollover (making the end address inclusive instead of exclusive), and move this into a
 common helper that is used by both VA and IPA invalidations, as suggested by Hyunwoo Kim (although the IPA
 version didn't suffer from this particular problem, obviously). (CVE-2026-89918)

Solution

Update the sys-kernel/cchost-kernel-6_18 library and its related packages to version 19999.44.106 or later.

See Also

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

Plugin Details

Severity: Critical

ID: 475336

Version: Revision 1.1

Type: Local

Published: 10/16/2026

Updated: 10/16/2026

Risk Information

VPR

Risk Factor: Medium

Score: 5

Percentile: 92.82

Vendor

Vendor Severity: HIGH

CVSS v2

Risk Factor: High

Base Score: 7.2

Temporal Score: 5.3

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

CVSS Score Source: CVE-2026-89918

CVSS v3

Risk Factor: Critical

Base Score: 9.3

Temporal Score: 8.1

Vector: CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:C/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: 9/16/2026

Reference Information

CVE: CVE-2026-89918