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 19506.448.36

medium Tenable Cloud Security Plugin ID 470048

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: nvme-tcp: fix usage of page_frag_cache
nvme uses page_frag_cache to preallocate PDU for each preallocated request of block device. Block devices
are created in parallel threads, consequently page_frag_cache is used in not thread-safe manner. That
leads to incorrect refcounting of backstore pages and premature free. That can be catched by !sendpage_ok
inside network stack: WARNING: CPU: 7 PID: 467 at ../net/core/skbuff.c:6931
skb_splice_from_iter+0xfa/0x310. tcp_sendmsg_locked+0x782/0xce0 tcp_sendmsg+0x27/0x40
sock_sendmsg+0x8b/0xa0 nvme_tcp_try_send_cmd_pdu+0x149/0x2a0 Then random panic may occur. Fix that by
serializing the usage of page_frag_cache. (CVE-2026-80862)

Solution

Update the sys-kernel/cchost-kernel-6_12 library and its related packages to version 19506.448.36 or later.

Plugin Details

Severity: Medium

ID: 470048

Version: Revision 1.6

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: 23.66

Vendor

Vendor Severity: LOW

CVSS v2

Risk Factor: Medium

Base Score: 4.9

Temporal Score: 3.6

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

CVSS Score Source: CVE-2026-80862

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: 9/4/2026

Reference Information

CVE: CVE-2026-80862

Detections

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