Virtuozzo 7 : readykernel-patch (VZA-2017-094)

Medium Nessus Plugin ID 103880


The remote Virtuozzo host is missing a security update.


According to the version of the vzkernel package and the readykernel-patch installed, the Virtuozzo installation on the remote host is affected by the following vulnerability :

- A flaw was discovered in the key management subsystem of the Linux kernel. It allowed to pass NULL payload with non-zero payload length as parameters to sys_add_key() and the KEYCTL_UPDATE operation of sys_keyctl(). A local unprivileged user could exploit this to cause a kernel crash (NULL pointer dereference).

Note that Tenable Network Security has extracted the preceding description block directly from the Virtuozzo security advisory.
Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.


Update the readykernel patch.

See Also

Plugin Details

Severity: Medium

ID: 103880

File Name: Virtuozzo_VZA-2017-094.nasl

Version: $Revision: 3.2 $

Type: local

Published: 2017/10/18

Modified: 2018/01/30

Dependencies: 12634

Risk Information

Risk Factor: Medium


Base Score: 4.9

Temporal Score: 3.6

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

Temporal Vector: CVSS2#E:U/RL:OF/RC:C


Base Score: 5.5

Temporal Score: 4.8

Vector: CVSS:3.0/AV:L/AC:L/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

CPE: p-cpe:/a:virtuozzo:virtuozzo:readykernel, cpe:/o:virtuozzo:virtuozzo:7

Required KB Items: Host/local_checks_enabled, Host/Virtuozzo/release, Host/Virtuozzo/rpm-list, Host/readykernel-info

Exploit Available: false

Exploit Ease: No known exploits are available

Patch Publication Date: 2017/10/16

Reference Information

CVE: CVE-2017-15274

OSVDB: 167222