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TI-2020-11218 Aliases CVE-2020-14347GHSA-7m6m-38f5-wg3j

A flaw was found in the way xserver memory was not properly initialized.

Priority LOW 25CWE-665Published · Updated

Key facts

Attack vector
Local
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
High · None · None
Fix status
Partial Red Hat: 9 fixed, 3 without a fix

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and Red Hat.

Summary

A flaw was found in the way xserver memory was not properly initialized. This could leak parts of server memory to the X client. In cases where Xorg server runs with elevated privileges, this could result in possible ASLR bypass. Xorg-server before version 1.20.9 is vulnerable.

Why it matters now

EPSS 0.00379 32nd percentileScored 2026-11-07
Fix Partial Red Hat: 2 advisoriesRed Hat: 9 fixed, 3 without a fix

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
The Xorg Projectxorg-x11-server1.20.9—No fix listedCNA
  • xorg-x11-server VendorThe Xorg Project Affected 1.20.9 Fixed in — No fix listed CNA

CPE configurations NVD · 7

CPEVersionsRoleVendor
cpe:2.3:a:x.org:x_server:*:*:*:*:*:*:*:*before 1.20.9Vulnerablex.org
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*9.0VulnerableDebian
cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*10.0VulnerableDebian
cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:esm:*:*:*14.04VulnerableCanonical
cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:esm:*:*:*16.04VulnerableCanonical
cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*18.04VulnerableCanonical
cpe:2.3:o:canonical:ubuntu_linux:20.04:*:*:*:lts:*:*:*20.04VulnerableCanonical
  • cpe:2.3:a:x.org:x_server:*:*:*:*:*:*:*:* Versions before 1.20.9 Vulnerable ·x.org
  • cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* Versions 9.0 Vulnerable ·Debian
  • cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:* Versions 10.0 Vulnerable ·Debian
  • cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:esm:*:*:* Versions 14.04 Vulnerable ·Canonical
  • cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:esm:*:*:* Versions 16.04 Vulnerable ·Canonical
  • cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:* Versions 18.04 Vulnerable ·Canonical
  • cpe:2.3:o:canonical:ubuntu_linux:20.04:*:*:*:lts:*:*:* Versions 20.04 Vulnerable ·Canonical

Remediation

Red Hat 2 advisories

  • RHSA-2021:1804 Released 2021-05-18 · Red Hat rating Moderate
    userspace graphics, xorg-x11, and mesa security, bug fix, and enhancement update
    • Red Hat CodeReady Linux Builder (v. 8) libinput-devel-1.16.3-1.el8, libwacom-devel-1.6-2.el8, mesa-libOSMesa-devel-20.3.3-2.el8 +3
    • Red Hat Enterprise Linux AppStream (v. 8) egl-wayland-1.1.5-3.el8, libX11-1.6.8-4.el8, libX11-common-1.6.8-4.el8 +38
  • RHSA-2020:5408 Released 2020-12-14 · Red Hat rating Important
    xorg-x11-server security update
    • Red Hat Enterprise Linux Client (v. 7) xorg-x11-server-1.20.4-15.el7_9, xorg-x11-server-Xephyr-1.20.4-15.el7_9, xorg-x11-server-Xorg-1.20.4-15.el7_9 +1
    • Red Hat Enterprise Linux Client Optional (v. 7) xorg-x11-server-Xdmx-1.20.4-15.el7_9, xorg-x11-server-Xnest-1.20.4-15.el7_9, xorg-x11-server-Xvfb-1.20.4-15.el7_9 +3
    • Red Hat Enterprise Linux ComputeNode Optional (v. 7) xorg-x11-server-1.20.4-15.el7_9, xorg-x11-server-Xdmx-1.20.4-15.el7_9, xorg-x11-server-Xephyr-1.20.4-15.el7_9 +7
    • Red Hat Enterprise Linux Server (v. 7) xorg-x11-server-1.20.4-15.el7_9, xorg-x11-server-Xephyr-1.20.4-15.el7_9, xorg-x11-server-Xorg-1.20.4-15.el7_9 +1
    • Red Hat Enterprise Linux Server Optional (v. 7) xorg-x11-server-Xdmx-1.20.4-15.el7_9, xorg-x11-server-Xnest-1.20.4-15.el7_9, xorg-x11-server-Xvfb-1.20.4-15.el7_9 +4
    • Red Hat Enterprise Linux Workstation (v. 7) xorg-x11-server-1.20.4-15.el7_9, xorg-x11-server-Xephyr-1.20.4-15.el7_9, xorg-x11-server-Xorg-1.20.4-15.el7_9 +1
    • Red Hat Enterprise Linux Workstation Optional (v. 7) xorg-x11-server-Xdmx-1.20.4-15.el7_9, xorg-x11-server-Xnest-1.20.4-15.el7_9, xorg-x11-server-Xvfb-1.20.4-15.el7_9 +3

Vendor assessments

Red Hat

Red Hat rating: Moderate. Red Hat's page for this CVE →

ProductStatusPlan or fix
Red Hat Enterprise Linux 5AffectedNo fix planned: Out of support scope
Red Hat Enterprise Linux 6AffectedNo fix planned: Out of support scope
Red Hat Enterprise Linux 9AffectedNo fix yet
Red Hat CodeReady Linux Builder (v. 8)Fixed RHSA-2021:1804
Red Hat Enterprise Linux AppStream (v. 8)Fixed RHSA-2021:1804
Red Hat Enterprise Linux Client (v. 7)Fixed RHSA-2020:5408
Red Hat Enterprise Linux Client Optional (v. 7)Fixed RHSA-2020:5408
Red Hat Enterprise Linux ComputeNode Optional (v. 7)Fixed RHSA-2020:5408
Red Hat Enterprise Linux Server (v. 7)Fixed RHSA-2020:5408
Red Hat Enterprise Linux Server Optional (v. 7)Fixed RHSA-2020:5408
Red Hat Enterprise Linux Workstation (v. 7)Fixed RHSA-2020:5408
Red Hat Enterprise Linux Workstation Optional (v. 7)Fixed RHSA-2020:5408

Timeline

  1. 2026-10-02 Threatist record created from CVE-2020-14347
  2. 2026-10-03 Alias added: GHSA-7m6m-38f5-wg3j

References

Patch 1

Advisory 9

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences