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OpenAdvisories
High USN-4487-1 2 CVEs

libx11 vulnerabilities

Published Sep 2, 2020 · Updated Apr 22, 2026

Summary

Todd Carson discovered that libx11 incorrectly handled certain memory
operations. A local attacker could possibly use this issue to escalate
privileges. (CVE-2020-14344)

Jayden Rivers discovered that libx11 incorrectly handled locales. A local
attacker could possibly use this issue to escalate privileges.
(CVE-2020-14363)

Fixed packages 3

ReleasePackageFixed in
Ubuntu · 16.04 LTS 16.04:LTS libx11 2:1.6.3-1ubuntu2.2
Ubuntu · 18.04 LTS 18.04:LTS libx11 2:1.6.4-3ubuntu0.3
Ubuntu · 20.04 LTS 20.04:LTS libx11 2:1.6.9-2ubuntu1.1

Vulnerabilities 2

References

  • report
    https://ubuntu.com/security/CVE-2020-14344
  • report
    https://ubuntu.com/security/CVE-2020-14363