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 20085.0.0

critical Tenable Self-Hosted Container Security Plugin ID 471369

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: xdp: reject clones that overrun
skb_shared_info tailroom xdpf_clone() clones broadcast copies into a single page and sets frame_sz to
PAGE_SIZE. __xdp_build_skb_from_frame() later treats that page like a normal XDP frame and expects the
usual skb_shared_info tailroom at the end of the buffer. The current check only rejects frames whose
linear xdp_frame header, headroom, and packet data exceed PAGE_SIZE. A source frame backed by a larger
allocation can still satisfy that check while extending into the clone's required shared-info area. When
such a clone is converted back into an skb, build_skb_around() places skb_shared_info over live packet
bytes and later writes can corrupt XDP return metadata. Reject clones unless their linear area fits inside
SKB_WITH_OVERHEAD(PAGE_SIZE), matching the tailroom requirement already enforced by the XDP-to-skb
conversion path. (CVE-2026-74616)

Solution

Update the sys-kernel/cchost-kernel-6_18 library and its related packages to version 20085.0.0 or later.

Plugin Details

Severity: Critical

ID: 471369

Version: Revision 1.3

Type: Local

Family: Google COS Security Checks

Published: 10/3/2026

Updated: 10/3/2026

Supported Sensors: Tenable Cloud Security, Tenable Self-Hosted Container Security

Risk Information

VPR

Risk Factor: Medium

Score: 6.9

Percentile: 96.53

Vendor

Vendor Severity: LOW

CVSS v2

Risk Factor: Critical

Base Score: 10

Temporal Score: 7.4

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

CVSS Score Source: CVE-2026-74616

CVSS v3

Risk Factor: Critical

Base Score: 9.8

Temporal Score: 8.5

Vector: CVSS:3.0/AV:N/AC:L/PR:N/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: 8/22/2026

Reference Information

CVE: CVE-2026-74616

Detections

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