Google: sys-kernel/cchost-kernel-6_12, sys-kernel/csql-kernel-6_12, sys-kernel/lakitu-kernel-6_12, sys-kernel/lakitu-nc-kernel-6_12: security update to 19506.448.8

high Tenable Self-Hosted Container Security Plugin ID 469747

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: netfilter: nft_fib: reject fib
expression on the netdev egress hook A fib expression in a netdev egress base chain dereferences
nft_in(pkt), NULL on the transmit path, causing a NULL pointer dereference at eval. nft_fib_validate()
masks the hook with NF_INET_* values, but netdev hook numbers are a separate enum that aliases them
(NF_NETDEV_EGRESS == NF_INET_LOCAL_IN), so an egress chain passes validation and then faults. Add
nft_fib_netdev_validate() that limits each result/flag to the netdev hook where the device it reads
exists: the input-device cases (OIF, OIFNAME, ADDRTYPE with F_IIF) to ingress, the output-device case
(ADDRTYPE with F_OIF) to egress, ADDRTYPE with no device flag to both. Also restrict nft_fib_validate() to
NFPROTO_IPV4/IPV6/INET so its NF_INET_* masks are not applied to another family's hooks. (CVE-2026-72254)

Solution

Update the sys-kernel/cchost-kernel-6_12 library and its related packages to version 19506.448.8 or later.

See Also

https://storage.googleapis.com/cos-oval-vulnerability-feed/cos-129.oval.xml.tar.gz

Plugin Details

Severity: High

ID: 469747

Version: Revision 1.6

Type: Local

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

Percentile: 23.58

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:N/A:C

CVSS Score Source: CVE-2026-72254

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.5

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/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-2026-72254