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Unscored USN-5193-1 4 CVEs

xorg-server, xorg-server-hwe-18.04, xwayland vulnerabilities

Published Dec 14, 2021 · Updated Apr 22, 2026

Ecosystem: Ubuntu

Summary

Jan-Niklas Sohn discovered that the X.Org X Server incorrectly handled
certain inputs. An attacker could use this issue to cause the server to
crash, resulting in a denial of service, or possibly execute arbitrary
code and escalate privileges.

Fixed packages 3

ReleasePackageFixed in
Ubuntu · 18.04 LTS 18.04:LTS xorg-server 2:1.19.6-1ubuntu4.10
Ubuntu · 18.04 LTS 18.04:LTS xorg-server-hwe-18.04 2:1.20.8-2ubuntu2.2~18.04.6
Ubuntu · 20.04 LTS 20.04:LTS xorg-server 2:1.20.13-1ubuntu1~20.04.2

Vulnerabilities 4

References

  • report
    https://ubuntu.com/security/CVE-2021-4008
  • report
    https://ubuntu.com/security/CVE-2021-4009
  • report
    https://ubuntu.com/security/CVE-2021-4010
  • report
    https://ubuntu.com/security/CVE-2021-4011