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 19999.44.28

high Tenable Cloud Security Plugin ID 471470

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: perf: Reject exited events as group
leaders perf_event_remove_on_exec() sets remove-on-exec events to the EXIT state and detaches their group
relationships. The event's file descriptor can remain open, however, and perf_event_open() currently
accepts that event as a group leader because its early validation rejects only REVOKED and DEAD events. A
new sibling can consequently be linked to the detached leader. When the leader is closed,
perf_group_detach() observes that its PERF_ATTACH_GROUP bit is already clear and skips the new sibling.
The sibling then retains a group_leader pointer to the freed event. Reject group leaders in the EXIT
state. Perform the check while holding the shared context mutex so that an exec in the target task cannot
detach the leader between validation and group attachment. [peterz: make the earlier test fully
consistent] (CVE-2026-74753)

Solution

Update the sys-kernel/cchost-kernel-6_18 library and its related packages to version 19999.44.28 or later.

Plugin Details

Severity: High

ID: 471470

Version: Revision 1.5

Type: Local

Family: Google COS Security Checks

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: 58.15

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-2026-74753

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: 8/26/2026

Reference Information

CVE: CVE-2026-74753

Detections

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