Google: sys-kernel/csql-kernel-6_6, sys-kernel/lakitu-kernel-6_6, sys-kernel/lakitu-nc-kernel-6_6, sys-kernel/lakitu-vgpu-kernel-6_6: security update to 18867.528.3

high Tenable Cloud Security Plugin ID 467133

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: memfd: deny writeable mappings when
implying SEAL_WRITE When SEAL_EXEC is added, SEAL_WRITE is implied to make W^X. But the implied seal is
set after the check that makes sure the memfd can not have any writable mappings. This means one can use
SEAL_EXEC to apply SEAL_WRITE while having writeable mappings. This breaks the contract that SEAL_WRITE
provides and can be used by an attacker to pass a memfd that appears to be write sealed but can still be
modified arbitrarily. Fix this by adding the implied seals before the call for mapping_deny_writable() is
done. (CVE-2026-63952)

Solution

Update the sys-kernel/csql-kernel-6_6 library and its related packages to version 18867.528.3 or later.

Plugin Details

Severity: High

ID: 467133

Version: Revision 1.1

Type: Local

Family: Google COS Security Checks

Published: 10/2/2026

Updated: 10/2/2026

Risk Information

VPR

Risk Factor: Medium

Score: 4.8

Percentile: 57.82

Vendor

Vendor Severity: LOW

CVSS v2

Risk Factor: Medium

Base Score: 6.8

Temporal Score: 5

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

CVSS Score Source: CVE-2026-63952

CVSS v3

Risk Factor: High

Base Score: 8.4

Temporal Score: 7.3

Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

Exploit Ease: No known exploits are available

Vulnerability Publication Date: 6/22/2026

Reference Information

CVE: CVE-2026-63952

Detections

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