Alpine: multiple xen packages: security update to 4.16.1-r6

high Tenable Cloud Security Plugin ID 407834

Description

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

- insufficient TLB flush for x86 PV guests in shadow mode For migration as well as to work around kernels
unaware of L1TF (see XSA-273), PV guests may be run in shadow paging mode. To address XSA-401, code was
moved inside a function in Xen. This code movement missed a variable changing meaning / value between old
and new code positions. The now wrong use of the variable did lead to a wrong TLB flush condition,
omitting flushes where such are necessary. (CVE-2022-33745)

- Xenstore: Guests can crash xenstored Due to a bug in the fix of XSA-115 a malicious guest can cause
xenstored to use a wrong pointer during node creation in an error path, resulting in a crash of xenstored
or a memory corruption in xenstored causing further damage. Entering the error path can be controlled by
the guest e.g. by exceeding the quota value of maximum nodes per domain. (CVE-2022-42309)

Plugin Details

Severity: High

ID: 407834

Version: Revision 1.38

Type: Local

Family: Alpine Linux Local Security Checks

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: 6.8

Temporal Score: 5

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

CVSS Score Source: CVE-2022-42309

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: 12/2/2021

Reference Information

CVE: CVE-2022-33745, CVE-2022-42309

IAVB: 2021-B-0068-S, 2022-B-0048-S

Detections

Analytics