Detections
Analytics

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 19506.448.8

medium Tenable Cloud Security Plugin ID 469569

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: xen/gntdev: fix error handling in
 ioctl When gntdev_ioctl_map_grant_ref() fails to copy the operation result back to userspace after
 successfully adding the mapping to the list, the error path returns -EFAULT without releasing the
 reference acquired by gntdev_alloc_map(). The mapping remains in priv->maps with a refcount of 1, causing
 a memory leak and a dangling list entry. Additionally, gntdev_add_map() may modify map->index to avoid
 overlap with existing mappings. Therefore, the index returned to userspace must be obtained after
 gntdev_add_map() completes. Fix this by holding the mutex across gntdev_add_map(), retrieving the correct
 index, and copy_to_user(). If copy_to_user() fails, remove the mapping from the list and release the
 reference while still holding the lock. Fix these issues by properly handling all error cases.
 (CVE-2026-72138)

Solution

Update the sys-kernel/cchost-kernel-6_12 library and its related packages to version 19506.448.8 or later.

See Also

https://storage.googleapis.com/cos-oval-vulnerability-feed/cos-129.oval.xml.tar.gz

Plugin Details

Severity: Medium

ID: 469569

Version: Revision 1.6

Type: Local

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: 23.61

Vendor

Vendor Severity: LOW

CVSS v2

Risk Factor: Low

Base Score: 3.8

Temporal Score: 2.8

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

CVSS Score Source: CVE-2026-72138

CVSS v3

Risk Factor: Medium

Base Score: 4.7

Temporal Score: 4.1

Vector: CVSS:3.0/AV:L/AC:H/PR:L/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: 8/11/2026

Reference Information

CVE: CVE-2026-72138