Detections
Analytics

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 20198.0.0

high Tenable Self-Hosted Container Security Plugin ID 475790

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: xsk: honor XDP_TX_METADATA in zero-
 copy path The zero-copy path reads TX metadata whenever the UMEM has metadata space, even if the
 descriptor does not set XDP_TX_METADATA. Pass descriptor options through the metadata helpers and ignore
 metadata unless the option is set. This does not fix the existing per-WQE metadata handling for mlx5
 MPWQEs. Only the descriptor that starts a session passes through xsk_tx_metadata_request() and configures
 offload state shared by the batch. Metadata on descriptors joining an open session is therefore not
 validated and does not configure its requested offloads. In addition, a non-NULL metadata pointer from
 such a descriptor is treated as a timestamp completion request even when XDP_TXMD_FLAGS_TIMESTAMP is not
 set, so its metadata union can be overwritten with an unrequested timestamp. Fixing mixed metadata states
 within one MPWQE requires a separate change. (CVE-2026-90086)

Solution

Update the sys-kernel/cchost-kernel-6_18 library and its related packages to version 20198.0.0 or later.

See Also

https://storage.googleapis.com/cos-oval-vulnerability-feed/cos-138.oval.xml.tar.gz

Plugin Details

Severity: High

ID: 475790

Version: Revision 1.1

Type: Local

Published: 10/16/2026

Updated: 10/16/2026

Risk Information

VPR

Risk Factor: Medium

Score: 4.3

Percentile: 53.42

Vendor

Vendor Severity: LOW

CVSS v2

Risk Factor: High

Base Score: 7.8

Temporal Score: 5.8

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

CVSS Score Source: CVE-2026-90086

CVSS v3

Risk Factor: High

Base Score: 7.1

Temporal Score: 6.2

Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/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-2026-90086