Detections
Analytics

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 19216.532.42

critical Tenable Self-Hosted Container Security Plugin ID 468829

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: skmsg: preserve sg.copy across SG
 transforms The sk_msg sg.copy bitmap is part of the scatterlist entry ownership state. A set bit tells
 sk_msg_compute_data_pointers() not to expose the entry through writable BPF ctx->data. This protects
 entries backed by pages that are not private to the sk_msg, such as splice-backed file page-cache pages.
 Several sk_msg transform paths move, copy, split, or compact msg->sg.data[] entries without moving the
 matching sg.copy bit. This can make an externally backed entry arrive at a new slot with a clear copy bit.
 A later SK_MSG verdict can then expose sg_virt(sge) as writable ctx->data and BPF stores can modify the
 original page cache. Keep sg.copy synchronized with sg.data[] whenever entries are transferred, shifted,
 split, or copied into a new sk_msg. Clear the bit when an entry is replaced by a newly allocated private
 page or freed. This covers the BPF pull/push/pop helpers, sk_msg_shift_left/right(), sk_msg_xfer(), and
 tls_split_open_record(), including the partial tail entry created during TLS open-record splitting.
 (CVE-2026-63830)

Solution

Update the sys-kernel/cchost-kernel-6_12 library and its related packages to version 19216.532.42 or later.

See Also

https://storage.googleapis.com/cos-oval-vulnerability-feed/cos-125.oval.xml.tar.gz

Plugin Details

Severity: Critical

ID: 468829

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: Medium

Score: 6.5

Percentile: 96.83

Vendor

Vendor Severity: LOW

CVSS v2

Risk Factor: High

Base Score: 9.7

Temporal Score: 7.2

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

CVSS Score Source: CVE-2026-63830

CVSS v3

Risk Factor: Critical

Base Score: 9.4

Temporal Score: 8.2

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:L

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

Exploit Ease: No known exploits are available

Vulnerability Publication Date: 7/8/2026

Reference Information

CVE: CVE-2026-63830