Detections
Analytics

Alpine: multiple xorg-server packages: security update to 21.1.25-r0

high Tenable Cloud Security Plugin ID 473835

Description

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

 - A use after free caused by missing lifecycle management of gesture sprites in GestureBuildSprite() in
 X.Org X Server before 21.1.25 and XWayland before 24.1.14 could be used by authenticated X clients to
 crash the X server or potentially execute code. (CVE-2026-93536)

 - A double free in XKB SetGeometryin X.Org X Server before 21.1.25 and X Wayland before 24.1.14 could be
 used by attached clients to cause a crash or potentially code in the x server context. (CVE-2026-88812)

 - A use-after-free in present_clear_window_notifies() in the X.org X Server before 21.1.25 and X Wayland
 before 24.1.14 could be used by malicious X clients to crash or potentially execute code in the X server
 context. (CVE-2026-93515)

 - A use-after-free caused by lack of lifecycle management when adding / removing XInput master devices in
 X.org X Server before 21.1.25 and XWayland before 24.1.14 could be used by authenticated X Clients to
 crash the X server or potentially execute code in X server context. (CVE-2026-93516)

 - A heap buffer overflow in handling GLX RenderLarge request where dataBytes exceeds cmdlen in X.org X
 server before 21.1.25 and XWayland before 24.1.14 that could be be triggered by an authenticated X client
 could cause crashes or code execution in X server context. (CVE-2026-93517)

Solution

Update the xorg-server library and its related packages to version 21.1.25-r0 or later.

See Also

https://security.alpinelinux.org/vuln/CVE-2026-88812

https://security.alpinelinux.org/vuln/CVE-2026-93515

https://security.alpinelinux.org/vuln/CVE-2026-93516

https://security.alpinelinux.org/vuln/CVE-2026-93517

https://security.alpinelinux.org/vuln/CVE-2026-93518

https://security.alpinelinux.org/vuln/CVE-2026-93519

https://security.alpinelinux.org/vuln/CVE-2026-93520

https://security.alpinelinux.org/vuln/CVE-2026-93521

https://security.alpinelinux.org/vuln/CVE-2026-93522

https://security.alpinelinux.org/vuln/CVE-2026-93523

https://security.alpinelinux.org/vuln/CVE-2026-93524

https://security.alpinelinux.org/vuln/CVE-2026-93536

Plugin Details

Severity: High

ID: 473835

Version: Revision 1.3

Type: Local

Published: 10/8/2026

Updated: 10/29/2026

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

Risk Information

VPR

Risk Factor: Medium

Score: 4.9

Percentile: 58.38

CVSS v2

Risk Factor: High

Base Score: 7.5

Temporal Score: 5.5

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

CVSS Score Source: CVE-2026-93536

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

CVSS Score Source: CVE-2026-93523

CVSS v4

Risk Factor: High

Base Score: 8.5

Threat Score: 5.9

Threat Vector: CVSS:4.0/E:U

Vector: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

CVSS Score Source: CVE-2026-93517

Vulnerability Information

Exploit Ease: No known exploits are available

Reference Information

CVE: CVE-2026-88812, CVE-2026-93515, CVE-2026-93516, CVE-2026-93517, CVE-2026-93518, CVE-2026-93519, CVE-2026-93520, CVE-2026-93521, CVE-2026-93522, CVE-2026-93523, CVE-2026-93524, CVE-2026-93536