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, sys-kernel/tpusev-kernel-6_6: security update to 18613.675.28

medium Tenable Cloud Security Plugin ID 467150

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: vc_screen: fix null-ptr-deref in
vcs_notifier() during concurrent vcs_write A KASAN null-ptr-deref was observed in vcs_notifier(): BUG:
KASAN: null-ptr-deref in vcs_notifier+0x98/0x130 Read of size 2 at addr qmp_cmd_name: qmp_capabilities,
arguments: {} The issue is a race condition in vcs_write(). When the console_lock is temporarily dropped
(to copy data from userspace), the vc_data pointer obtained from vcs_vc() may become stale. After re-
acquiring the lock, vcs_vc() is called again to re-validate the pointer. If the vc has been deallocated in
the meantime, vcs_vc() returns NULL, and the while loop breaks (with written > 0). However, after the
loop, vcs_scr_updated(vc) is still called with the now-NULL vc pointer, leading to a null pointer
dereference in the notifier chain (vcs_notifier dereferences param->vc). Fix this by adding a NULL check
for vc before calling vcs_scr_updated(). (CVE-2026-53385)

Solution

Update the sys-kernel/csql-kernel-6_6 library and its related packages to version 18613.675.28 or later.

Plugin Details

Severity: Medium

ID: 467150

Version: Revision 1.1

Type: Local

Family: Google COS Security Checks

Published: 10/2/2026

Updated: 10/2/2026

Risk Information

VPR

Risk Factor: Low

Score: 3

Percentile: 23.63

Vendor

Vendor Severity: MEDIUM

CVSS v2

Risk Factor: Medium

Base Score: 4.6

Temporal Score: 3.4

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

CVSS Score Source: CVE-2026-53385

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: 7/8/2026

Reference Information

CVE: CVE-2026-53385

Detections

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