Google: sys-kernel/cchost-kernel-6_12, sys-kernel/csql-kernel-6_12, sys-kernel/csql-kernel-6_6, sys-kernel/lakitu-kernel-6_12, sys-kernel/lakitu-kernel-6_6, sys-kernel/lakitu-nc-kernel-6_12, sys-kernel/lakitu-nc-kernel-6_6, sys-kernel/lakitu-vgpu-kernel-6_6: security update to 19216.739.5

medium Tenable Self-Hosted Container Security Plugin ID 475088

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: mm/hugetlb: preserve mremap address
delta when skipping page tables move_hugetlb_page_tables() optimizes mremap() by advancing to the last
entry in the page table when the source page table does not exist, either initially or after unsharing a
PMD table. The common loop increment then steps to the first entry in the next page table. However, the
code advances both the source and destination addresses to the last entries in their respective page
tables, which is wrong. The destination address must be advanced only by the same amount as the source
address. If the source and destination offsets within their page tables differ, the destination address
can be advanced too far, causing follow-up issues. Fix this by advancing the destination address by the
source advance distance. With a reproducer, we were able to trigger a kernel panic on x86-64. With this
fix in place, we can no longer reproduce the issue. (CVE-2026-98373)

Solution

Update the sys-kernel/cchost-kernel-6_12 library and its related packages to version 19216.739.5 or later.

See Also

https://storage.googleapis.com/cos-oval-vulnerability-feed/cos-125.oval.xml.tar.gz

Plugin Details

Severity: Medium

ID: 475088

Version: Revision 1.1

Type: Local

Published: 10/16/2026

Updated: 10/16/2026

Risk Information

VPR

Risk Factor: Low

Score: 3

Percentile: 23.67

Vendor

Vendor Severity: LOW

CVSS v2

Risk Factor: Medium

Base Score: 4.4

Temporal Score: 3.3

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

CVSS Score Source: CVE-2026-98373

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: 10/7/2026

Reference Information

CVE: CVE-2026-98373