Alpine: xen: security update to 4.9.1-r4

high Tenable Self-Hosted Container Security Plugin ID 407906

Description

There are packages installed that are affected by multiple vulnerabilities referenced in the following CVEs:

- An issue was discovered in Xen through 4.10.x allowing x86 PV guest OS users to cause a denial of service
(host OS CPU hang) via non-preemptable L3/L4 pagetable freeing. (CVE-2018-7540)

- An issue was discovered in Xen through 4.10.x allowing guest OS users to cause a denial of service
(hypervisor crash) or gain privileges by triggering a grant-table transition from v2 to v1.
(CVE-2018-7541)

- An issue was discovered in Xen 4.8.x through 4.10.x allowing x86 PVH guest OS users to cause a denial of
service (NULL pointer dereference and hypervisor crash) by leveraging the mishandling of configurations
that lack a Local APIC. (CVE-2018-7542)

See Also

https://security.alpinelinux.org/vuln/CVE-2018-7540

https://security.alpinelinux.org/vuln/CVE-2018-7541

https://security.alpinelinux.org/vuln/CVE-2018-7542

Plugin Details

Severity: High

ID: 407906

Version: Revision 1.25

Type: Local

Published: 10/31/2023

Updated: 7/2/2026

Supported Sensors: Agentless Assessment, Tenable Cloud Security, Tenable Self-Hosted Container Security

Risk Information

VPR

Risk Factor: Medium

Score: 5

Percentile: 95.11

CVSS v2

Risk Factor: Medium

Base Score: 6.1

Temporal Score: 4.5

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

CVSS Score Source: CVE-2018-7541

CVSS v3

Risk Factor: High

Base Score: 8.8

Temporal Score: 7.7

Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/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: 2/27/2018

Reference Information

CVE: CVE-2018-7540, CVE-2018-7541, CVE-2018-7542

BID: 103174, 103177

IAVA: 2018-A-0094-S