Google: sys-kernel/cchost-kernel-6_18, sys-kernel/csql-kernel-6_18, sys-kernel/lakitu-kernel-6_18, sys-kernel/lakitu-nc-kernel-6_18: security update to 19999.44.106

high Tenable Self-Hosted Container Security Plugin ID 475101

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: RDMA/core: Fix potential use after
free in uverbs_free_dmah() When accessing a dmah via the netlink path the only synchronization mechanism
for the said dmah is rdma_restrack_get(). Currently, rdma_restrack_del() is invoked at the end of
uverbs_free_dmah(), which is too late, since by that point vendor-specific resources associated with the
dmah might already be freed. This can leave a short window where the dmah remains accessible through
restrack, leading to a potential use-after-free. Fix this by moving the rdma_restrack_begin_del() call to
the start of uverbs_free_dmah(), ensuring that the dmah is removed from restrack before its internal
resources are released. This guarantees that no new users hold references to a dmah that is in the process
of destruction. In addition, this change preserves the intended inverted order between create and destroy
routines: resources are added to restrack at the end of successful creation, and hence shall be removed
from the restrack first thing during the destruction flow, which keeps the lifecycle management consistent
and predictable. (CVE-2026-93267)

Solution

Update the sys-kernel/cchost-kernel-6_18 library and its related packages to version 19999.44.106 or later.

Plugin Details

Severity: High

ID: 475101

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: 4.9

Percentile: 58.35

Vendor

Vendor Severity: LOW

CVSS v2

Risk Factor: High

Base Score: 7.2

Temporal Score: 5.3

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

CVSS Score Source: CVE-2026-93267

CVSS v3

Risk Factor: High

Base Score: 7.8

Temporal Score: 6.8

Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/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-2026-93267

Detections

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