A flaw was found in xorg-x11-server before 1.20.3. An incorrect permission check for -modulepath and -logfile options when starting Xorg. X server allows unprivileged users with the ability to log in to the system via physical console to escalate their privileges and run arbitrary code under root privileges.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alpine Linux | — | Upgrade xorg-server | Oct 31, 2018 | Oct 25, 2018 |
| Arch Linux | — | Upgrade to the latest version of Arch Linux | Jul 11, 2025 | Oct 25, 2018 |
| Centos_linux | — | Upgrade xorg-x11-server-XwaylandUpgrade xorg-x11-server-XorgUpgrade xorg-x11-server-XdmxUpgrade xorg-x11-server-develUpgrade xorg-x11-server-XnestUpgrade xorg-x11-server-XephyrUpgrade xorg-x11-server-debuginfoUpgrade xorg-x11-server-commonUpgrade xorg-x11-server-sourceUpgrade xorg-x11-server-Xvfb | Dec 15, 2018 | Oct 25, 2018 |
| Debian | — | Upgrade xorg-server | Oct 27, 2018 | Oct 25, 2018 |
| Gentoo Linux | — | Upgrade x11-base/xorg-server. | Oct 31, 2018 | Oct 25, 2018 |
| Huawei Euleros 2_0_sp2 | — | Upgrade xorg-x11-server-common | Dec 4, 2019 | Oct 25, 2018 |
| Huawei Euleros 2_0_sp3 | — | Upgrade xorg-x11-server-common | Dec 18, 2019 | Oct 25, 2018 |
| Huawei Euleros 2_0_sp5 | — | Upgrade xorg-x11-server-common | Dec 11, 2019 | Oct 25, 2018 |
| Huawei Euleros 2_0_sp8 | — | Upgrade xorg-x11-server-common | Nov 19, 2019 | Oct 25, 2018 |
| Ibm Aix | — | Apply the fix or workaround for xorg_advisory3 | Dec 12, 2018 | Oct 25, 2018 |
| Oracle Solaris | — | Upgrade x11/server/xdmx to version 1.19.5-11.4.3.0.1.5.0 on Solaris 11.4Upgrade x11/server/xorg/driver/xorg-video to version 11.4-11.4.3.0.1.5.0 on Solaris 11.4Upgrade x11/server/xorg to version 1.19.5-11.4.3.0.1.5.0 on Solaris 11.4Upgrade x11/server/xephyr to version 1.19.5-11.4.3.0.1.5.0 on Solaris 11.4Upgrade x11/server/xvfb to version 1.19.5-11.4.3.0.1.5.0 on Solaris 11.4Upgrade x11/modeline-utilities to version 1.19.5-11.4.3.0.1.5.0 on Solaris 11.4Upgrade x11/server/xserver-common to version 1.19.5-11.4.3.0.1.5.0 on Solaris 11.4 | Nov 19, 2018 | Oct 25, 2018 |
| Oracle_linux | — | Upgrade xorg-x11-server-XvfbUpgrade xorg-x11-server-XorgUpgrade xorg-x11-server-XephyrUpgrade xorg-x11-server-XwaylandUpgrade xorg-x11-server-sourceUpgrade xorg-x11-server-develUpgrade xorg-x11-server-commonUpgrade xorg-x11-server-XnestUpgrade xorg-x11-server-Xdmx | Nov 8, 2018 | Oct 25, 2018 |
| Redhat_linux | — | Upgrade xorg-x11-server-develUpgrade xorg-x11-server-XnestUpgrade xorg-x11-server-XdmxUpgrade xorg-x11-server-sourceUpgrade xorg-x11-server-XvfbUpgrade xorg-x11-server-XwaylandUpgrade xorg-x11-server-debuginfoUpgrade xorg-x11-server-XephyrUpgrade xorg-x11-server-XorgUpgrade xorg-x11-server-common | Oct 31, 2018 | Oct 25, 2018 |
| Suse | — | Upgrade xorg-x11-XvncUpgrade xorg-x11-serverUpgrade xorg-x11-server-extraUpgrade xorg-x11-server-waylandUpgrade xorg-x11-server-sourceUpgrade xorg-x11-server-sdk | Oct 26, 2018 | Oct 25, 2018 |
| Ubuntu | — | Upgrade xserver-xorg-core-hwe-16.04Upgrade xserver-xorg-core | Nov 7, 2018 | Oct 25, 2018 |
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