Google: sys-kernel/csql-kernel-6_6, sys-kernel/lakitu-kernel-6_6, sys-kernel/lakitu-nc-kernel-6_6, sys-kernel/lakitu-vgpu-kernel-6_6, sys-kernel/tpusev-kernel-6_6: security update to 18613.675.28

high Tenable Self-Hosted Container Security Plugin ID 466001

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: blk-cgroup: fix UAF in
__blkcg_rstat_flush() When multiple blkgs in the same blkcg are released concurrently, a use-after-free
can occur. The race happens when one blkg's __blkcg_rstat_flush() removes another blkg's iostat entries
via llist_del_all(). The second blkg sees an empty list and proceeds to free itself while the first is
still iterating over its entries. Move the flush from __blkg_release() (RCU callback) to blkg_release()
(before call_rcu). This ensures the RCU grace period waits for any concurrent flush's rcu_read_lock()
section to complete before freeing. (CVE-2026-63802)

Solution

Update the sys-kernel/csql-kernel-6_6 library and its related packages to version 18613.675.28 or later.

Plugin Details

Severity: High

ID: 466001

Version: Revision 1.3

Type: Local

Family: Google COS Security Checks

Published: 10/2/2026

Updated: 10/3/2026

Supported Sensors: Tenable Cloud Security, Tenable Self-Hosted Container Security

Risk Information

VPR

Risk Factor: Medium

Score: 4.9

Percentile: 58.17

Vendor

Vendor Severity: HIGH

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-2026-63802

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-2026-63802

Detections

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