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 19506.299.36

medium Tenable Cloud Security Plugin ID 469251

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: net: Drop the lock in
skb_may_tx_timestamp() skb_may_tx_timestamp() may acquire sock::sk_callback_lock. The lock must not be
taken in IRQ context, only softirq is okay. A few drivers receive the timestamp via a dedicated interrupt
and complete the TX timestamp from that handler. This will lead to a deadlock if the lock is already
write-locked on the same CPU. Taking the lock can be avoided. The socket (pointed by the skb) will remain
valid until the skb is released. The ->sk_socket and ->file member will be set to NULL once the user
closes the socket which may happen before the timestamp arrives. If we happen to observe the pointer while
the socket is closing but before the pointer is set to NULL then we may use it because both pointer (and
the file's cred member) are RCU freed. Drop the lock. Use READ_ONCE() to obtain the individual pointer.
Add a matching WRITE_ONCE() where the pointer are cleared. (CVE-2026-43216)

Solution

Update the sys-kernel/cchost-kernel-6_12 library and its related packages to version 19506.299.36 or later.

Plugin Details

Severity: Medium

ID: 469251

Version: Revision 1.5

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: Low

Score: 3

Percentile: 23.72

Vendor

Vendor Severity: LOW

CVSS v2

Risk Factor: Medium

Base Score: 4.6

Temporal Score: 3.4

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

CVSS Score Source: CVE-2026-43216

CVSS v3

Risk Factor: Medium

Base Score: 5.5

Temporal Score: 4.8

Vector: CVSS:3.0/AV:L/AC:L/PR:L/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: 5/6/2026

Reference Information

CVE: CVE-2026-43216

Detections

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