{"id":"CVE-2020-14363","details":"An integer overflow vulnerability leading to a double-free was found in libX11. This flaw allows a local privileged attacker to cause an application compiled with libX11 to crash, or in some cases, result in arbitrary code execution. The highest threat from this flaw is to confidentiality, integrity as well as system availability.","modified":"2026-05-18T05:50:54.162078426Z","published":"2020-09-11T18:15:13.380Z","related":["ALSA-2021:1804","SUSE-SU-2020:2474-1","SUSE-SU-2020:2474-2","SUSE-SU-2020:2475-1","SUSE-SU-2020:2475-2","openSUSE-SU-2020:1368-1","openSUSE-SU-2020:1370-1","openSUSE-SU-2024:10918-1"],"database_specific":{"unresolved_ranges":[{"extracted_events":[{"last_affected":"33"}],"vendor_product":"fedoraproject:fedora","source":"CPE_FIELD","cpes":["cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*"]}]},"references":[{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/7AVXCQOSCAPKYYHFIJAZ6E2C7LJBTLXF/"},{"type":"ADVISORY","url":"https://github.com/Ruia-ruia/Exploits/blob/master/DFX11details.txt"},{"type":"ADVISORY","url":"https://lists.x.org/archives/xorg-announce/2020-August/003056.html"},{"type":"ADVISORY","url":"https://usn.ubuntu.com/4487-2/"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-14363"},{"type":"EVIDENCE","url":"https://github.com/Ruia-ruia/Exploits/blob/master/x11doublefree.sh"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/mirror/libx11","events":[{"introduced":"0"},{"fixed":"505420662577749e36640db48f6b6b9ae0236e09"}],"database_specific":{"cpe":"cpe:2.3:a:x.org:libx11:*:*:*:*:*:*:*:*","extracted_events":[{"introduced":"0"},{"fixed":"1.6.12"}],"source":"CPE_FIELD"}}],"versions":["libX11-1.6.11","libX11-1.6.10","libX11-1.6.9","libX11-1.6.8","libX11-1.6.7","libX11-1.6.6","libX11-1.6.5","libX11-1.6.4","libX11-1.6.3","libX11-1.6.2","libX11-1.6.1","libX11-1.6.0","libX11-1.5.99.902","libX11-1.5.99.901","libX11-1.5.0","libX11-1.4.99.902","libX11-1.4.99.901","libX11-1.4.99.1","libX11-1.4.4","libX11-1.4.3","libX11-1.4.2","libX11-1.4.1","libX11-1.4.0","libX11-1.3.99.903","libX11-1.3.99.902","libX11-1.3.99.901","libX11-1.3.4","libX11-1.3.3","libX11-1.3.2","libX11-1.3.1","libX11-1.3","libX11-1.2.99.901","libX11-1.2.2","libX11-1.2.1","libX11-1.2","libX11-1.1.99.2","libX11-1.1.4","libX11-1.1.3","libX11-1.1.2","XORG-6_99_99_904","MODULAR_COPY","XORG-6_99_99_903","XORG-6_8_99_903","XORG-6_99_99_902","XORG-6_8_99_902","XORG-6_99_99_901","XORG-6_8_99_901","XORG-6_99_99_900","XORG-6_8_99_900","XORG-6_8_99_15","XORG-6_8_99_14","XORG-6_8_99_13","XORG-6_8_99_10","XORG-6_8_99_9","XORG-6_8_99_7","XORG-6_8_99_6","XORG-6_8_1","XORG-6_7_99_903","XORG-6_7_99_902","XORG-6_7_99_2","XORG-6_7_99_1","XACE-SELINUX-MERGE","XORG-MAIN"],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2020-14363.json"}},{"ranges":[{"type":"GIT","repo":"https://gitlab.freedesktop.org/xorg/lib/libx11","events":[{"introduced":"0"},{"fixed":"505420662577749e36640db48f6b6b9ae0236e09"}],"database_specific":{"cpe":"cpe:2.3:a:x.org:libx11:*:*:*:*:*:*:*:*","extracted_events":[{"introduced":"0"},{"fixed":"1.6.12"}],"source":"CPE_FIELD"}}],"versions":["libX11-1.6.11","libX11-1.6.10","libX11-1.6.9","libX11-1.6.8","libX11-1.6.7","libX11-1.6.6","libX11-1.6.5","libX11-1.6.4","libX11-1.6.3","libX11-1.6.2","libX11-1.6.1","libX11-1.6.0","libX11-1.5.99.902","libX11-1.5.99.901","libX11-1.5.0","libX11-1.4.99.902","libX11-1.4.99.901","libX11-1.4.99.1","libX11-1.4.4","libX11-1.4.3","libX11-1.4.2","libX11-1.4.1","libX11-1.4.0","libX11-1.3.99.903","libX11-1.3.99.902","libX11-1.3.99.901","libX11-1.3.4","libX11-1.3.3","libX11-1.3.2","libX11-1.3.1","libX11-1.3","libX11-1.2.99.901","libX11-1.2.2","libX11-1.2.1","libX11-1.2","libX11-1.1.99.2","libX11-1.1.4","libX11-1.1.3","libX11-1.1.2","XORG-6_99_99_904","MODULAR_COPY","XORG-6_99_99_903","XORG-6_8_99_903","XORG-6_99_99_902","XORG-6_8_99_902","XORG-6_99_99_901","XORG-6_8_99_901","XORG-6_99_99_900","XORG-6_8_99_900","XORG-6_8_99_15","XORG-6_8_99_14","XORG-6_8_99_13","XORG-6_8_99_10","XORG-6_8_99_9","XORG-6_8_99_7","XORG-6_8_99_6","XORG-6_8_1","XORG-6_7_99_903","XORG-6_7_99_902","XORG-6_7_99_2","XORG-6_7_99_1","XACE-SELINUX-MERGE","XORG-MAIN"],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2020-14363.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"}]}