Google: sys-kernel/cchost-kernel-6_12, sys-kernel/csql-kernel-6_12, sys-kernel/csql-kernel-6_6, sys-kernel/lakitu-kernel-6_12, sys-kernel/lakitu-kernel-6_6, sys-kernel/lakitu-nc-kernel-6_12, sys-kernel/lakitu-nc-kernel-6_6, sys-kernel/lakitu-vgpu-kernel-6_6: security update to 19216.700.7

high Tenable Cloud Security Plugin ID 468874

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 ib_destroy_cq_user() When accessing a CQ via the netlink path the only synchronization mechanism
for the said CQ is rdma_restrack_get(). Currently, rdma_restrack_del() is invoked at the end of
ib_destroy_cq_user(), which is too late, since by that point vendor-specific resources associated with the
CQ might already be freed. This can leave a short window where the CQ 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 ib_destroy_cq_user(), ensuring that the CQ is removed from restrack before its internal resources are
released. This guarantees that no new users hold references to a CQ 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-2026-92511)

Solution

Update the sys-kernel/cchost-kernel-6_12 library and its related packages to version 19216.700.7 or later.

Plugin Details

Severity: High

ID: 468874

Version: Revision 1.5

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: Medium

Score: 4.9

Percentile: 58.27

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-2026-92511

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: 9/17/2026

Reference Information

CVE: CVE-2026-92511

Detections

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