Google: sys-kernel/cchost-kernel-6_12, sys-kernel/csql-kernel-6_12, sys-kernel/lakitu-kernel-6_12, sys-kernel/lakitu-nc-kernel-6_12: security update to 19506.549.7

high Tenable Cloud Security Plugin ID 475173

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: smb: client: fix missing iov bounds
check in parse_posix_sids() In parse_posix_sids(), sidsbuf_end is calculated using the server-supplied
out_len without being validated against the actual length of the received iov (iov_len). If a server
provides an inflated out_len, sidsbuf_end will point past the end of the iov. This defeats the bounds
guards in posix_info_sid_size(), allowing out-of-bounds reads into adjacent kernel memory. Fix this by
rejecting responses where the calculated sidsbuf_end would exceed the received iov boundaries or cause
pointer wraparound. (CVE-2026-98405)

Solution

Update the sys-kernel/cchost-kernel-6_12 library and its related packages to version 19506.549.7 or later.

Plugin Details

Severity: High

ID: 475173

Version: Revision 1.1

Type: Local

Family: Google COS Security Checks

Published: 10/16/2026

Updated: 10/16/2026

Risk Information

VPR

Risk Factor: Medium

Score: 4.3

Percentile: 53.52

Vendor

Vendor Severity: LOW

CVSS v2

Risk Factor: High

Base Score: 7.8

Temporal Score: 5.8

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

CVSS Score Source: CVE-2026-98405

CVSS v3

Risk Factor: High

Base Score: 7.1

Temporal Score: 6.2

Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/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: 10/14/2026

Reference Information

CVE: CVE-2026-98405

Detections

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