Detections
Analytics

Google: sys-kernel/cchost-kernel-6_18, sys-kernel/csql-kernel-6_18, sys-kernel/lakitu-kernel-6_18, sys-kernel/lakitu-nc-kernel-6_18: security update to 20198.0.0

high Tenable Self-Hosted Container Security Plugin ID 475792

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: Check ancestor frames for rbtree
 callbacks bpf_rbtree_add() invokes its comparator while the caller holds the root lock. The native
 insertion code retains raw parent and link pointers across the callback, so the verifier prohibits
 unlocking, consuming tree nodes, or changing RCU state from that callback. in_rbtree_lock_required_cb()
 only checks the innermost verifier frame. Static subprogram calls are permitted while holding a spin lock,
 and such a call pushes a frame without in_callback_fn set. Consequently, all callback restrictions
 disappear in the nested frame. The subprogram can unlock the tree, remove and drop the node being
 compared, then relock. Native insertion resumes with the stale parent pointer and links freed memory into
 the tree. Walk all active frames for the rbtree callback instead. Benign static subprograms remain
 permitted, while callback restrictions follow execution into nested frames. (CVE-2026-98047)

Solution

Update the sys-kernel/cchost-kernel-6_18 library and its related packages to version 20198.0.0 or later.

See Also

https://storage.googleapis.com/cos-oval-vulnerability-feed/cos-138.oval.xml.tar.gz

Plugin Details

Severity: High

ID: 475792

Version: Revision 1.1

Type: Local

Published: 10/16/2026

Updated: 10/16/2026

Risk Information

VPR

Risk Factor: Medium

Score: 4.9

Percentile: 58.34

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-2026-98047

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: 9/25/2026

Reference Information

CVE: CVE-2026-98047