Google: sys-kernel/cchost-kernel-6_12, sys-kernel/cchost-kernel-6_18, sys-kernel/csql-kernel-6_12, sys-kernel/csql-kernel-6_18, sys-kernel/lakitu-kernel-6_12, sys-kernel/lakitu-kernel-6_18, sys-kernel/lakitu-nc-kernel-6_12, sys-kernel/lakitu-nc-kernel-6_18: security update to 19999.44.21

medium Tenable Self-Hosted Container Security Plugin ID 471328

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/irdma: Fix OOB read during CQ MR
registration Sashiko pointed out an unrelated bug during a previous patch:
https://sashiko.dev/#/patchset/20260512183852.614045-1-jmoroni%40google.com This change fixes the bug by
eliminating the cqmr->split field which was not being set properly and instead just checks the CQ resize
feature flag directly. The cqmr->split field essentially tracks whether IRDMA_FEATURE_CQ_RESIZE is set,
but it was not being set until CQ creation time, which is _after_ CQ memory registration (the only other
place where it is referenced). As a result, it would always be false during MR registration and would
therefore cause irdma_handle_q_mem to populate cqmr->shadow even for GEN_2 HW and beyond: cqmr->shadow =
(dma_addr_t)arr[req->cq_pages]; The issue is that for GEN_2 and beyond, req->cq_pages may be exactly equal
to iwmr->page_cnt and therefore equal to the size of arr, which would cause an OOB read by one.
(CVE-2026-74346)

Solution

Update the sys-kernel/cchost-kernel-6_12 library and its related packages to version 19999.44.21 or later.

Plugin Details

Severity: Medium

ID: 471328

Version: Revision 1.6

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: Low

Score: 3.5

Percentile: 51.45

Vendor

Vendor Severity: LOW

CVSS v2

Risk Factor: Medium

Base Score: 5.2

Temporal Score: 3.8

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

CVSS Score Source: CVE-2026-74346

CVSS v3

Risk Factor: Medium

Base Score: 6.1

Temporal Score: 5.3

Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:L/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: 8/11/2026

Reference Information

CVE: CVE-2026-74346

Detections

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