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 19506.448.8

medium Tenable Self-Hosted Container Security Plugin ID 470374

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/sched: act_api: fix TOCTOU NULL
 deref on a->goto_chain tcf_action_exec() handles TC_ACT_GOTO_CHAIN by first checking
 rcu_access_pointer(a->goto_chain) and then calling tcf_action_goto_chain_exec(), which does a second,
 independent rcu_dereference_bh(a->goto_chain) read and immediately dereferences chain->filter_chain. A
 concurrent tcf_action_set_ctrlact() (e.g. the gact replace path) can clear a->goto_chain between the two
 reads, so the second read returns NULL and tcf_action_goto_chain_exec() dereferences NULL. Fix the race by
 doing a single rcu_dereference_bh() read of a->goto_chain in tcf_action_exec(), checking it once for NULL,
 and passing the resulting chain pointer into tcf_action_goto_chain_exec(). This turns the split check/use
 into a single check/use on one value. (CVE-2026-74740)

Solution

Update the sys-kernel/cchost-kernel-6_12 library and its related packages to version 19506.448.8 or later.

See Also

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

Plugin Details

Severity: Medium

ID: 470374

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: Low

Score: 3

Percentile: 23.61

Vendor

Vendor Severity: LOW

CVSS v2

Risk Factor: High

Base Score: 7.2

Temporal Score: 5.3

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

CVSS Score Source: CVE-2026-74740

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: 8/26/2026

Reference Information

CVE: CVE-2026-74740