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 20162.0.0

high Tenable Self-Hosted Container Security Plugin ID 475767

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: SUNRPC: always drain cache_cleaner
 before destroying a cache_detail sunrpc_destroy_cache_detail() only cancels the global cache_cleaner
 delayed_work when cache_list is empty. During per-netns teardown cache_list is never empty because
 init_net's caches remain registered, so the cancel never fires. After unlink, the caller proceeds to
 cache_destroy_net() which kfrees the cache_detail while cache_clean() may still hold a dangling pointer to
 it. The result is a use-after-free: cache_dequeue() takes cd->queue_lock on freed memory, and cache_put()
 dereferences cd->cache_put as a function pointer from freed slab. Drop the list_empty guard so that
 cancel_delayed_work_sync() always runs, ensuring any in-flight cache_clean() completes before the
 cache_detail is freed. Re-arm the cleaner afterwards if other caches are still registered.
 (CVE-2026-89548)

Solution

Update the sys-kernel/cchost-kernel-6_18 library and its related packages to version 20162.0.0 or later.

See Also

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

Plugin Details

Severity: High

ID: 475767

Version: Revision 1.1

Type: Local

Published: 10/16/2026

Updated: 10/16/2026

Risk Information

VPR

Risk Factor: Medium

Score: 4.9

Percentile: 58.42

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-2026-89548

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: 9/11/2026

Reference Information

CVE: CVE-2026-89548