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 Cloud Security Plugin ID 475070

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: ata: ahci: fail probe if BAR too small
for claimed ports When an AHCI controller is disabled in BIOS, its HOST_CAP register may contain a bogus
value, e.g. 0xFFFFFFFF. Since CAP.NP (Number of Ports) is a zeroes based 5-bit register field, a value of
0x1f means 32 ports. If CAP.NP claims more ports than can physically fit within the mapped BAR region,
accessing port registers beyond the BAR boundary causes a kernel panic. Add validation in ahci_init_one()
to check that the BAR size is sufficient for the number of ports claimed in CAP.NP. The check calculates
the required MMIO size as: required_size = 0x100 (global registers) + max_ports * 0x80 If required_size
exceeds the actual BAR size, the probe fails with -ENODEV, preventing the panic and providing a clear
error message. [cassel: commit log] (CVE-2026-97441)

Solution

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

Plugin Details

Severity: Medium

ID: 475070

Version: Revision 1.1

Type: Local

Family: Google COS Security Checks

Published: 10/16/2026

Updated: 10/16/2026

Risk Information

VPR

Risk Factor: Low

Score: 3

Percentile: 23.62

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-2026-97441

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: 9/24/2026

Reference Information

CVE: CVE-2026-97441

Detections

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