Google: sys-kernel/cchost-kernel-6_12, sys-kernel/csql-kernel-6_12: security update to 19506.0.32

medium Tenable Cloud Security Plugin ID 472020

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: md: suspend array while updating
raid_disks via sysfs In raid1_reshape(), freeze_array() is called before modifying the r1bio memory pool
(conf->r1bio_pool) and conf->raid_disks, and unfreeze_array() is called after the update is completed.
However, freeze_array() only waits until nr_sync_pending and (nr_pending - nr_queued) of all buckets
reaches zero. When an I/O error occurs, nr_queued is increased and the corresponding r1bio is queued to
either retry_list or bio_end_io_list. As a result, freeze_array() may unblock before these r1bios are
released. This can lead to a situation where conf->raid_disks and the mempool have already been updated
while queued r1bios, allocated with the old raid_disks value, are later released. Consequently,
free_r1bio() may access memory out of bounds in put_all_bios() and release r1bios of the wrong size to the
new mempool, potentially causing issues with the mempool as well. Since only normal I/O might increase
nr_queued while an I/O error occurs, suspending the array avoids this issue. Note: Updating raid_disks via
ioctl SET_ARRAY_INFO already suspends the array. Therefore, we suspend the array when updating raid_disks
via sysfs to avoid this issue too. (CVE-2025-71225)

Solution

Update the sys-kernel/cchost-kernel-6_12 library and its related packages to version 19506.0.32 or later.

Plugin Details

Severity: Medium

ID: 472020

Version: Revision 1.4

Type: Local

Family: Google COS Security Checks

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: 3.5

Percentile: 51.94

Vendor

Vendor Severity: LOW

CVSS v2

Risk Factor: Medium

Base Score: 4.5

Temporal Score: 3.3

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

CVSS Score Source: CVE-2025-71225

CVSS v3

Risk Factor: Medium

Base Score: 5.3

Temporal Score: 4.6

Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:L/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: 2/18/2026

Reference Information

CVE: CVE-2025-71225

Detections

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