{"id":"CVE-2021-3472","details":"A flaw was found in xorg-x11-server in versions before 1.20.11. An integer underflow can occur in xserver which can lead to a local privilege escalation. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.","modified":"2026-04-16T00:07:02.969516341Z","published":"2021-04-26T15:15:07.857Z","related":["SUSE-SU-2021:1179-1","SUSE-SU-2021:1180-1","SUSE-SU-2021:1181-1","SUSE-SU-2021:1182-1","SUSE-SU-2021:1187-1","SUSE-SU-2021:1188-1","SUSE-SU-2021:14690-1","openSUSE-SU-2021:0554-1","openSUSE-SU-2024:11525-1","openSUSE-SU-2024:11528-1"],"references":[{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/MDF7TAJE7NPZPNVOXSD5HBIFLNPUOD2V/"},{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/MO6S5OPXUDYBSRSVWVLFLJ6AFERG4HNY/"},{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/N63KL3T22HNFT4FJ7VMVF6U5Q4RFJIQF/"},{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PEXPCLMVU25AUZTUXC4MYBGPKOAIM5TW/"},{"type":"ADVISORY","url":"http://www.openwall.com/lists/oss-security/2021/04/13/1"},{"type":"ADVISORY","url":"https://bugzilla.redhat.com/show_bug.cgi?id=1944167"},{"type":"ADVISORY","url":"https://gitlab.freedesktop.org/xorg/xserver/-/commit/7aaf54a1884f71dc363f0b884e57bcb67407a6cd"},{"type":"ADVISORY","url":"https://lists.debian.org/debian-lts-announce/2021/04/msg00013.html"},{"type":"ADVISORY","url":"https://lists.x.org/archives/xorg-announce/2021-April/003080.html"},{"type":"ADVISORY","url":"https://seclists.org/oss-sec/2021/q2/20"},{"type":"ADVISORY","url":"https://security.gentoo.org/glsa/202104-02"},{"type":"ADVISORY","url":"https://www.debian.org/security/2021/dsa-4893"},{"type":"ADVISORY","url":"https://www.tenable.com/plugins/nessus/148701"},{"type":"ADVISORY","url":"https://www.zerodayinitiative.com/advisories/ZDI-21-463/"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=1944167"},{"type":"FIX","url":"http://www.openwall.com/lists/oss-security/2021/04/13/1"},{"type":"FIX","url":"https://bugzilla.redhat.com/show_bug.cgi?id=1944167"},{"type":"FIX","url":"https://gitlab.freedesktop.org/xorg/xserver/-/commit/7aaf54a1884f71dc363f0b884e57bcb67407a6cd"},{"type":"FIX","url":"https://lists.x.org/archives/xorg-announce/2021-April/003080.html"},{"type":"FIX","url":"https://seclists.org/oss-sec/2021/q2/20"},{"type":"ARTICLE","url":"http://www.openwall.com/lists/oss-security/2021/04/13/1"},{"type":"ARTICLE","url":"https://lists.debian.org/debian-lts-announce/2021/04/msg00013.html"},{"type":"ARTICLE","url":"https://lists.x.org/archives/xorg-announce/2021-April/003080.html"},{"type":"ARTICLE","url":"https://seclists.org/oss-sec/2021/q2/20"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://gitlab.freedesktop.org/xorg/xserver","events":[{"introduced":"0"},{"fixed":"7aaf54a1884f71dc363f0b884e57bcb67407a6cd"}]}],"versions":["DAMAGE-XFIXES-BASE","DRI-XFree86-4_3_99_12-merge","DRI-trunk-20040613","DRI-trunk-20040721","DRM-1_0_5","DRM-20040613","DRM-20040721","DRM-20050615","DRM-20051017","DRM-2_0_0","Domain-base","Domain-sync1","Domain-sync2","Domain-sync3","Domain-sync4","MODULAR_COPY","PRE_xf86-4_3_0_1","XACE-SELINUX-BASE","XACE-SELINUX-MERGE","XEVIE-BASE","XEVIE-MERGE","XORG-6_7_99_1","XORG-6_7_99_2","XORG-6_7_99_901","XORG-6_7_99_902","XORG-6_7_99_903","XORG-6_7_99_904","XORG-6_8_0","XORG-6_8_99_1","XORG-6_8_99_10","XORG-6_8_99_11","XORG-6_8_99_12","XORG-6_8_99_13","XORG-6_8_99_14","XORG-6_8_99_15","XORG-6_8_99_16","XORG-6_8_99_2","XORG-6_8_99_3","XORG-6_8_99_4","XORG-6_8_99_5","XORG-6_8_99_6","XORG-6_8_99_7","XORG-6_8_99_8","XORG-6_8_99_9","XORG-6_8_99_900","XORG-6_8_99_901","XORG-6_8_99_902","XORG-6_8_99_903","XORG-6_99_99_900","XORG-6_99_99_901","XORG-6_99_99_902","XORG-6_99_99_903","XORG-6_99_99_904","XORG-7_0","XORG-7_0_99_901","XORG-CURRENT-CLOSED","XORG-CURRENT-premerge-release-1","XORG-MAIN","XORG-RELEASE-1-BASE","add-Xi","ah-20021030","ah-20021030-postdri","before-mesa-4_0-import","before_20040421_xprint_branch_landing","dhd-20010328","dhd-20010817","dhd-20020916","dri-0-1-branchpoint","dri-20020129-merge","dri-20020222-merge","kdrive-initial-import","keithp","lg3d-base","pre-R651-import","pre-xgldrop-merge","sco_port_update-base","xf-3_9_16Z","xf-3_9_16Za","xf-3_9_16d","xf-3_9_16e","xf-3_9_16f","xf-3_9_17","xf-3_9_17Z","xf-3_9_17a","xf-3_9_17b","xf-3_9_17c","xf-3_9_17d","xf-3_9_17e","xf-3_9_17f","xf-3_9_18","xf-3_9_18Z","xf-3_9_18Za","xf-3_9_18a","xf-3_9_18b","xf-4_0","xf-4_0-bindist","xf-4_0Z","xf-4_0_1","xf-4_0_1-bindist","xf-4_0_1Z","xf-4_0_1Za","xf-4_0_1Zb","xf-4_0_1Zc","xf-4_0_1a","xf-4_0_1b","xf-4_0_1c","xf-4_0_1d","xf-4_0_1e","xf-4_0_1f","xf-4_0_1g","xf-4_0_1h","xf-4_0_2","xf-4_0_2-bindist","xf-4_0_99_1","xf-4_0_99_2","xf-4_0_99_3","xf-4_0_99_900","xf-4_0a","xf-4_0b","xf-4_0c","xf-4_0d","xf-4_0e","xf-4_0f","xf-4_0g","xf-4_1_99_1","xf-4_1_99_2","xf-4_1_99_3","xf-4_1_99_4","xf-4_1_99_5","xf-4_1_99_6","xf-4_1_99_7","xf-4_2-bp","xf-4_2_0","xf-4_2_0-bindist","xf-4_2_0-bindist-1","xf-4_2_0_1","xf-4_2_1","xf-4_2_1_1","xf-4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