{"id":"USN-4905-1","summary":"xorg-server, xorg-server-hwe-16.04, xorg-server-hwe-18.04 vulnerability","details":"Jan-Niklas Sohn discovered that the X.Org X Server incorrectly handled\ncertain lengths of XInput extension ChangeFeedbackControl requests. An\nattacker could use this issue to cause the server to crash, resulting in a\ndenial of service, or possibly execute arbitrary code.\n","modified":"2026-04-22T10:13:51.798175Z","published":"2021-04-13T14:51:00Z","related":["UBUNTU-CVE-2021-3472"],"upstream":["CVE-2021-3472","UBUNTU-CVE-2021-3472"],"references":[{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-4905-1"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2021-3472"}],"affected":[{"package":{"name":"xorg-server","ecosystem":"Ubuntu:16.04:LTS","purl":"pkg:deb/ubuntu/xorg-server@2:1.18.4-0ubuntu0.12?arch=source&distro=xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2:1.18.4-0ubuntu0.12"}]}],"versions":["2:1.17.2-1ubuntu9","2:1.17.2-1ubuntu10","2:1.17.3-2ubuntu1","2:1.17.3-2ubuntu2","2:1.17.3-2ubuntu3","2:1.17.3-2ubuntu4","2:1.18.1-1ubuntu3","2:1.18.1-1ubuntu4","2:1.18.3-1ubuntu1","2:1.18.3-1ubuntu2","2:1.18.3-1ubuntu2.2","2:1.18.3-1ubuntu2.3","2:1.18.4-0ubuntu0.1","2:1.18.4-0ubuntu0.2","2:1.18.4-0ubuntu0.3","2:1.18.4-0ubuntu0.4","2:1.18.4-0ubuntu0.6","2:1.18.4-0ubuntu0.7","2:1.18.4-0ubuntu0.8","2:1.18.4-0ubuntu0.9","2:1.18.4-0ubuntu0.10","2:1.18.4-0ubuntu0.11"],"ecosystem_specific":{"availability":"No 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