Detections
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Chainguard: linux-qemu-melange: security update to 6.18.49-r2

high Tenable Self-Hosted Container Security Plugin ID 472551

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: smb/client: fix chown/chgrp with SMB3
 POSIX Extensions Ownership (chown) and group (chgrp) modifications were being ignored when mounting with
 SMB3 POSIX Extensions unless CIFS_MOUNT_CIFS_ACL or CIFS_MOUNT_MODE_FROM_SID were also explicitly set. Fix
 this by checking for posix_extensions in cifs_setattr_nounix() when updating UID and GID, ensuring that
 id_mode_to_cifs_acl() is called to map and set the ownership/group information on the server.
 (CVE-2026-64388)

Solution

Update the linux-qemu-melange library and its related packages to version 6.18.49-r2 or later.

Plugin Details

Severity: High

ID: 472551

Version: Revision 1.1

Type: Local

Published: 10/3/2026

Updated: 10/3/2026

Risk Information

VPR

Risk Factor: Medium

Score: 4.9

Percentile: 58.27

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-2026-64388

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: 7/25/2026

Reference Information

CVE: CVE-2026-64388