Detections
Analytics

Alpine: xen: security update to 4.15.3-r2

high Tenable Cloud Security Plugin ID 407819

Description

There are packages installed that are affected by a vulnerability referenced in the following CVE:

 - 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)

See Also

https://security.alpinelinux.org/vuln/CVE-2022-33745

Plugin Details

Severity: High

ID: 407819

Version: Revision 1.32

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: 6.8

Temporal Score: 5

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

CVSS Score Source: CVE-2022-33745

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

IAVB: 2021-B-0068-S