{"id":"CVE-2023-1393","details":"A flaw was found in X.Org Server Overlay Window. A Use-After-Free may lead to local privilege escalation. If a client explicitly destroys the compositor overlay window (aka COW), the Xserver would leave a dangling pointer to that window in the CompScreen structure, which will trigger a use-after-free later.","modified":"2026-04-16T00:06:18.285615274Z","published":"2023-03-30T21:15:06.557Z","related":["ALSA-2023:1551","ALSA-2023:1592","ALSA-2023:6340","ALSA-2023:6341","ALSA-2023:6916","ALSA-2023:6917","SUSE-SU-2023:1674-1","SUSE-SU-2023:1675-1","SUSE-SU-2023:1677-1","SUSE-SU-2023:1678-1","SUSE-SU-2023:1679-1","SUSE-SU-2023:1680-1","SUSE-SU-2023:1716-1","openSUSE-SU-2024:12827-1","openSUSE-SU-2024:12834-1"],"database_specific":{"unresolved_ranges":[{"cpe":"cpe:2.3:o:fedoraproject:fedora:36:*:*:*:*:*:*:*","source":"CPE_FIELD","extracted_events":[{"last_affected":"36"}]},{"cpe":"cpe:2.3:o:fedoraproject:fedora:37:*:*:*:*:*:*:*","source":"CPE_FIELD","extracted_events":[{"last_affected":"37"}]},{"cpe":"cpe:2.3:o:fedoraproject:fedora:38:*:*:*:*:*:*:*","source":"CPE_FIELD","extracted_events":[{"last_affected":"38"}]}]},"references":[{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BPNQYHUI63DB5FHK6EOI3Z4C6YQZGZKI/"},{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/H3EVO3OQV6T4BSABWZ2TU3PY5TJTEQZ2/"},{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/MEHSYYFGBN3G4RS2HJXKQ5NBMOAZ5F2F/"},{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NOYATGGPMT3COC7ELAJW5TG2PVS3AFR2/"},{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PSAAGI5V77FQXIT5PP4URP6BYQVCK5U5/"},{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QHJMSMK7G4GPLMKIGKXIOL2RTKU5VFWE/"},{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SW2NRC3V53PIBXFPFBVWCOM2MDDILWQS/"},{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SWFUDSBSABRHQOX6TIQ5O3SNPFTPFQQP/"},{"type":"ADVISORY","url":"https://security.gentoo.org/glsa/202305-30"},{"type":"ADVISORY","url":"https://www.openwall.com/lists/oss-security/2023/03/29/1"},{"type":"FIX","url":"https://gitlab.freedesktop.org/xorg/xserver/-/commit/26ef545b3502f61ca722a7a3373507e88ef64110"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://gitlab.freedesktop.org/xorg/xserver","events":[{"introduced":"0"},{"fixed":"7c791b15504cc86a929acaa88161f012cdbba59f"},{"fixed":"26ef545b3502f61ca722a7a3373507e88ef64110"}],"database_specific":{"cpe":"cpe:2.3:a:x.org:x_server:*:*:*:*:*:*:*:*","source":["CPE_FIELD","REFERENCES"],"extracted_events":[{"introduced":"0"},{"fixed":"21.1.8"}]}}],"versions":["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-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-MAIN","add-Xi","ah-20021030","ah-20021030-postdri","before-mesa-4_0-import","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_2_99_1","xf-4_2_99_2","xf-4_2_99_3","xf-4_2_99_4","xf-4_2_99_901","xf-4_2_99_902","xf-4_3_0","xf-4_3_0_1","xf-4_3_99_1","xf-4_3_99_2","xf-4_3_99_3","xf-4_3_99_4","xf-4_3_99_5","xf-4_3_99_6","xf86-012804-2330","xf86-4_3_0_1","xf86-4_3_99_16","xf86-4_3_99_901","xf86-4_3_99_902","xf8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