Detections
Analytics

Google: sys-kernel/cchost-kernel-6_12, sys-kernel/cchost-kernel-6_18, sys-kernel/csql-kernel-6_12, sys-kernel/csql-kernel-6_18, sys-kernel/lakitu-kernel-6_12, sys-kernel/lakitu-kernel-6_18, sys-kernel/lakitu-nc-kernel-6_12, sys-kernel/lakitu-nc-kernel-6_18: security update to 19999.44.21

high Tenable Cloud Security Plugin ID 470458

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: bpf: Clear rb node linkage when
 freeing bpf_rb_root bpf_rb_root_free() detaches the root by copying the current rb_root_cached and then
 replacing the live root with RB_ROOT_CACHED. It then walks the copied root and drops each object contained
 in the tree. This leaves the rb node state intact while dropping the object. If the object is refcounted
 and survives the drop, its bpf_rb_node_kern still contains an owner pointer to the freed root and stale rb
 tree linkage. If a later bpf_rb_root allocation reuses the same address, bpf_rbtree_remove() can
 incorrectly pass the owner check and call rb_erase_cached() on a node whose rb pointers belong to the old
 tree. Mirror the list draining behavior by marking nodes as busy while the root is being detached, then
 clear the rb node and release the owner before dropping the containing object. This makes surviving nodes
 unowned and safe to reject from remove or accept for a later add. (CVE-2026-74344)

Solution

Update the sys-kernel/cchost-kernel-6_12 library and its related packages to version 19999.44.21 or later.

See Also

https://storage.googleapis.com/cos-oval-vulnerability-feed/cos-133.oval.xml.tar.gz

Plugin Details

Severity: High

ID: 470458

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: 58.13

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-2026-74344

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: 8/15/2026

Reference Information

CVE: CVE-2026-74344