High severity7.8NVD Advisory· Published Sep 11, 2020· Updated Jun 17, 2026
CVE-2020-14363
CVE-2020-14363
Description
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.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
43- osv-coords41 versionspkg:rpm/almalinux/libglvndpkg:rpm/almalinux/libglvnd-core-develpkg:rpm/almalinux/libglvnd-develpkg:rpm/almalinux/libglvnd-eglpkg:rpm/almalinux/libglvnd-glespkg:rpm/almalinux/libglvnd-glxpkg:rpm/almalinux/libglvnd-openglpkg:rpm/almalinux/libinput-develpkg:rpm/almalinux/libwacom-develpkg:rpm/almalinux/mesa-libgbm-develpkg:rpm/almalinux/mesa-libOSMesa-develpkg:rpm/almalinux/xorg-x11-driverspkg:rpm/almalinux/xorg-x11-server-develpkg:rpm/almalinux/xorg-x11-server-sourcepkg:rpm/opensuse/libX11&distro=openSUSE%20Leap%2015.1pkg:rpm/opensuse/libX11&distro=openSUSE%20Leap%2015.2pkg:rpm/opensuse/libX11&distro=openSUSE%20Tumbleweedpkg:rpm/suse/libX11&distro=HPE%20Helion%20OpenStack%208pkg:rpm/suse/libX11&distro=SUSE%20Enterprise%20Storage%205pkg:rpm/suse/libX11&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015-ESPOSpkg:rpm/suse/libX11&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015-LTSSpkg:rpm/suse/libX11&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP1pkg:rpm/suse/libX11&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP2pkg:rpm/suse/libX11&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP2-BCLpkg:rpm/suse/libX11&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP2-LTSSpkg:rpm/suse/libX11&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP3-BCLpkg:rpm/suse/libX11&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP3-LTSSpkg:rpm/suse/libX11&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP4-LTSSpkg:rpm/suse/libX11&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP5pkg:rpm/suse/libX11&distro=SUSE%20Linux%20Enterprise%20Server%2015-LTSSpkg:rpm/suse/libX11&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP2pkg:rpm/suse/libX11&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP3pkg:rpm/suse/libX11&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP4pkg:rpm/suse/libX11&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP5pkg:rpm/suse/libX11&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015pkg:rpm/suse/libX11&distro=SUSE%20Linux%20Enterprise%20Software%20Development%20Kit%2012%20SP5pkg:rpm/suse/libX11&distro=SUSE%20OpenStack%20Cloud%207pkg:rpm/suse/libX11&distro=SUSE%20OpenStack%20Cloud%208pkg:rpm/suse/libX11&distro=SUSE%20OpenStack%20Cloud%209pkg:rpm/suse/libX11&distro=SUSE%20OpenStack%20Cloud%20Crowbar%208pkg:rpm/suse/libX11&distro=SUSE%20OpenStack%20Cloud%20Crowbar%209
< 1:1.3.2-1.el8+ 40 more
- (no CPE)range: < 1:1.3.2-1.el8
- (no CPE)range: < 1:1.3.2-1.el8
- (no CPE)range: < 1:1.3.2-1.el8
- (no CPE)range: < 1:1.3.2-1.el8
- (no CPE)range: < 1:1.3.2-1.el8
- (no CPE)range: < 1:1.3.2-1.el8
- (no CPE)range: < 1:1.3.2-1.el8
- (no CPE)range: < 1.16.3-1.el8
- (no CPE)range: < 1.6-2.el8
- (no CPE)range: < 20.3.3-2.el8
- (no CPE)range: < 20.3.3-2.el8
- (no CPE)range: < 7.7-30.el8
- (no CPE)range: < 1.20.10-1.el8
- (no CPE)range: < 1.20.10-1.el8
- (no CPE)range: < 1.6.5-lp151.4.9.1
- (no CPE)range: < 1.6.5-lp152.5.9.1
- (no CPE)range: < 1.7.2-1.2
- (no CPE)range: < 1.6.2-12.15.1
- (no CPE)range: < 1.6.2-12.15.1
- (no CPE)range: < 1.6.5-3.12.1
- (no CPE)range: < 1.6.5-3.12.1
- (no CPE)range: < 1.6.5-3.12.1
- (no CPE)range: < 1.6.5-3.12.1
- (no CPE)range: < 1.6.2-12.15.1
- (no CPE)range: < 1.6.2-12.15.1
- (no CPE)range: < 1.6.2-12.15.1
- (no CPE)range: < 1.6.2-12.15.1
- (no CPE)range: < 1.6.2-12.15.1
- (no CPE)range: < 1.6.2-12.15.1
- (no CPE)range: < 1.6.5-3.12.1
- (no CPE)range: < 1.6.2-12.15.1
- (no CPE)range: < 1.6.2-12.15.1
- (no CPE)range: < 1.6.2-12.15.1
- (no CPE)range: < 1.6.2-12.15.1
- (no CPE)range: < 1.6.5-3.12.1
- (no CPE)range: < 1.6.2-12.15.1
- (no CPE)range: < 1.6.2-12.15.1
- (no CPE)range: < 1.6.2-12.15.1
- (no CPE)range: < 1.6.2-12.15.1
- (no CPE)range: < 1.6.2-12.15.1
- (no CPE)range: < 1.6.2-12.15.1
- The X11 Project/libX11v5Range: 1.6.12
Patches
Vulnerability mechanics
References
6- github.com/Ruia-ruia/Exploits/blob/master/x11doublefree.shnvdExploitThird Party Advisory
- bugzilla.redhat.com/show_bug.cginvdIssue TrackingThird Party Advisory
- github.com/Ruia-ruia/Exploits/blob/master/DFX11details.txtnvdThird Party Advisory
- lists.x.org/archives/xorg-announce/2020-August/003056.htmlnvdVendor Advisory
- usn.ubuntu.com/4487-2/nvdThird Party Advisory
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/7AVXCQOSCAPKYYHFIJAZ6E2C7LJBTLXF/nvd
News mentions
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