Google: sys-kernel/cchost-kernel-6_12, sys-kernel/csql-kernel-6_12, sys-kernel/csql-kernel-6_6, sys-kernel/lakitu-kernel-6_12, sys-kernel/lakitu-kernel-6_6, sys-kernel/lakitu-nc-kernel-6_12, sys-kernel/lakitu-nc-kernel-6_6, sys-kernel/lakitu-vgpu-kernel-6_6: security update to 19216.739.5

high Tenable Cloud Security Plugin ID 475021

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/core: Reject unregistering
netdevs in ib_get_eth_speed ib_device_get_netdev() intentionally returns a referenced net_device even when
it is unregistering, so matching and cleanup callers can still find the association. The reference keeps
struct net_device allocated, but does not guarantee that the device remains operational.
ib_get_eth_speed() uses the returned device operationally by invoking its ethtool callback. Although that
call is made under RTNL, the function does not verify the registration state first. An asynchronous RDMA
port query can therefore call into a netdev after NETDEV_UNREGISTER and ndo_uninit have completed. Check
for NETREG_REGISTERED while holding RTNL and return -ENODEV for a device which is being unregistered.
Keeping RTNL across the check and the ethtool operation prevents unregister from starting between them.
Keep the speed fallback and warning under RTNL as well, so the warning can safely read netdev->name. Drop
the netdev reference before releasing RTNL once all accesses to the device are complete. (CVE-2026-98359)

Solution

Update the sys-kernel/cchost-kernel-6_12 library and its related packages to version 19216.739.5 or later.

Plugin Details

Severity: High

ID: 475021

Version: Revision 1.1

Type: Local

Family: Google COS Security Checks

Published: 10/16/2026

Updated: 10/16/2026

Risk Information

VPR

Risk Factor: Medium

Score: 4.9

Percentile: 58.52

Vendor

Vendor Severity: LOW

CVSS v2

Risk Factor: Medium

Base Score: 6

Temporal Score: 4.4

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

CVSS Score Source: CVE-2026-98359

CVSS v3

Risk Factor: High

Base Score: 7

Temporal Score: 6.1

Vector: CVSS:3.0/AV:L/AC:H/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: 10/6/2026

Reference Information

CVE: CVE-2026-98359

Detections

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