Google: sys-kernel/cchost-kernel-6_12, sys-kernel/csql-kernel-6_12, sys-kernel/lakitu-kernel-6_12, sys-kernel/lakitu-nc-kernel-6_12: security update to 19506.299.60

high Tenable Cloud Security Plugin ID 469757

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: nfsd: avoid leaking pre-allocated
openowner on unconfirmed retry race When find_or_alloc_open_stateowner() encounters an unconfirmed owner,
it calls release_openowner() and sets oo = NULL. Control then falls through past the `if (oo)` guard --
which would have freed any pre-allocated `new` -- and unconditionally executes `new =
alloc_stateowner(...)`. If `new` was already allocated on a prior iteration, the pointer is silently
overwritten and the previous allocation (slab object + owner name buffer) is leaked. This requires a race:
two NFSv4.0 OPEN threads with the same owner string, where a concurrent thread inserts a new unconfirmed
owner into the hash between retry iterations. The window is narrow but repeatable under adversarial
conditions. Fix by adding `goto retry` after `oo = NULL` so the already-allocated `new` is reused on the
next iteration rather than overwritten. (CVE-2026-53394)

Solution

Update the sys-kernel/cchost-kernel-6_12 library and its related packages to version 19506.299.60 or later.

Plugin Details

Severity: High

ID: 469757

Version: Revision 1.6

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: Low

Score: 3

Percentile: 23.76

Vendor

Vendor Severity: HIGH

CVSS v2

Risk Factor: High

Base Score: 7.8

Temporal Score: 5.8

Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:C

CVSS Score Source: CVE-2026-53394

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.5

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/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-2026-53394

Detections

Analytics