Detections
Analytics

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 19506.299.60

high Tenable Cloud Security Plugin ID 470194

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: keys: Pin request_key_auth payload in
 instantiate paths A: request_key() B: KEYCTL_INSTANTIATE_IOV ================ =========================
 create auth key store rka in auth key wait for helper get auth key load rka from auth key copy user
 payload sleep on #PF helper completed detach and free rka destroy auth key wake up use rka->target_key
 **USE-AFTER-FREE** Give request_key_auth payloads a refcount. Take a payload reference while authkey->sem
 stabilizes the payload and revocation state. Hold that reference across the instantiate and reject paths.
 Drop the auth key owning reference from revoke and destroy. [jarkko: Replaced the first two paragraphs of
 text with an actual concurrency scenario.] (CVE-2026-63823)

Solution

Update the sys-kernel/cchost-kernel-6_12 library and its related packages to version 19506.299.60 or later.

See Also

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

Plugin Details

Severity: High

ID: 470194

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: 4.9

Percentile: 58.27

Vendor

Vendor Severity: LOW

CVSS v2

Risk Factor: Medium

Base Score: 6.8

Temporal Score: 5

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

CVSS Score Source: CVE-2026-63823

CVSS v3

Risk Factor: High

Base Score: 7.8

Temporal Score: 6.8

Vector: CVSS:3.0/AV:L/AC:L/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: 7/8/2026

Reference Information

CVE: CVE-2026-63823