Alpine: multiple xwayland packages: security update to 21.1.4-r0

high Tenable Self-Hosted Container Security Plugin ID 426548

Description

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

- A flaw was found in xorg-x11-server in versions before 21.1.2 and before 1.20.14. An out-of-bounds access
can occur in the SProcRenderCompositeGlyphs function. The highest threat from this vulnerability is to
data confidentiality and integrity as well as system availability. (CVE-2021-4008)

- A flaw was found in xorg-x11-server in versions before 21.1.2 and before 1.20.14. An out-of-bounds access
can occur in the SProcXFixesCreatePointerBarrier function. The highest threat from this vulnerability is
to data confidentiality and integrity as well as system availability. (CVE-2021-4009)

- A flaw was found in xorg-x11-server in versions before 21.1.2 and before 1.20.14. An out-of-bounds access
can occur in the SProcScreenSaverSuspend function. The highest threat from this vulnerability is to data
confidentiality and integrity as well as system availability. (CVE-2021-4010)

- A flaw was found in xorg-x11-server in versions before 21.1.2 and before 1.20.14. An out-of-bounds access
can occur in the SwapCreateRegister function. The highest threat from this vulnerability is to data
confidentiality and integrity as well as system availability. (CVE-2021-4011)

Plugin Details

Severity: High

ID: 426548

Version: Revision 1.5

Type: Local

Family: Alpine Linux Local Security Checks

Published: 5/16/2025

Updated: 7/2/2026

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

Risk Information

VPR

Risk Factor: Medium

Score: 4.9

Percentile: 57.12

CVSS v2

Risk Factor: High

Base Score: 7.2

Temporal Score: 5.3

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

CVSS Score Source: CVE-2021-4011

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: 12/17/2021

Reference Information

CVE: CVE-2021-4008, CVE-2021-4009, CVE-2021-4010, CVE-2021-4011

Detections

Analytics