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 19999.44.21

high Tenable Cloud Security Plugin ID 470110

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: dma-fence: Make
dma_fence_dedup_array() robust against 0-count input dma_fence_dedup_array() returns 1 when called with
num_fences == 0: the for-loop body never executes, j stays at 0, and the final `return ++j` yields 1. This
contradicts both the kernel-doc ("Return: Number of unique fences remaining in the array") and the natural
expectation that 0 input gives 0 output. The caller __dma_fence_unwrap_merge() bails out via the `if
(count == 0 || count == 1)` fast path and so is save. But amdgpu_userq_wait_*() could reach the dedup call
with a zero local count and dereference an uninitialized fence slot in the array. Make the contract match
the documentation by returning 0 early. This also skips an unnecessary sort() call on an empty array.
(CVE-2026-72095)

Solution

Update the sys-kernel/cchost-kernel-6_18 library and its related packages to version 19999.44.21 or later.

Plugin Details

Severity: High

ID: 470110

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: Medium

Score: 4.9

Percentile: 58.13

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-2026-72095

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: 8/15/2026

Reference Information

CVE: CVE-2026-72095

Detections

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