Amazon Linux 2 Security Advisory: ALAS2-2026-3806
Advisory Released Date: 2026-07-20
Advisory Updated Date: 2026-07-20
Severity:
Important
Issue Overview:
glamor Font Atlas Heap Buffer Overflow (CVE-2026-55999)
Affected Packages:
xorg-x11-server
Note:
This advisory is applicable to Amazon Linux 2 (AL2) Core repository. Visit this FAQ section for the difference between AL2 Core and AL2 Extras advisories.
Issue Correction:
Run yum update xorg-x11-server or yum update --advisory ALAS2-2026-3806 to update your system.
New Packages:
aarch64:
xorg-x11-server-common-1.20.4-22.amzn2.0.13.aarch64
xorg-x11-server-Xorg-1.20.4-22.amzn2.0.13.aarch64
xorg-x11-server-Xnest-1.20.4-22.amzn2.0.13.aarch64
xorg-x11-server-Xdmx-1.20.4-22.amzn2.0.13.aarch64
xorg-x11-server-Xvfb-1.20.4-22.amzn2.0.13.aarch64
xorg-x11-server-Xephyr-1.20.4-22.amzn2.0.13.aarch64
xorg-x11-server-Xwayland-1.20.4-22.amzn2.0.13.aarch64
xorg-x11-server-devel-1.20.4-22.amzn2.0.13.aarch64
xorg-x11-server-debuginfo-1.20.4-22.amzn2.0.13.aarch64
i686:
xorg-x11-server-common-1.20.4-22.amzn2.0.13.i686
xorg-x11-server-Xorg-1.20.4-22.amzn2.0.13.i686
xorg-x11-server-Xnest-1.20.4-22.amzn2.0.13.i686
xorg-x11-server-Xdmx-1.20.4-22.amzn2.0.13.i686
xorg-x11-server-Xvfb-1.20.4-22.amzn2.0.13.i686
xorg-x11-server-Xephyr-1.20.4-22.amzn2.0.13.i686
xorg-x11-server-Xwayland-1.20.4-22.amzn2.0.13.i686
xorg-x11-server-devel-1.20.4-22.amzn2.0.13.i686
xorg-x11-server-debuginfo-1.20.4-22.amzn2.0.13.i686
noarch:
xorg-x11-server-source-1.20.4-22.amzn2.0.13.noarch
src:
xorg-x11-server-1.20.4-22.amzn2.0.13.src
x86_64:
xorg-x11-server-common-1.20.4-22.amzn2.0.13.x86_64
xorg-x11-server-Xorg-1.20.4-22.amzn2.0.13.x86_64
xorg-x11-server-Xnest-1.20.4-22.amzn2.0.13.x86_64
xorg-x11-server-Xdmx-1.20.4-22.amzn2.0.13.x86_64
xorg-x11-server-Xvfb-1.20.4-22.amzn2.0.13.x86_64
xorg-x11-server-Xephyr-1.20.4-22.amzn2.0.13.x86_64
xorg-x11-server-Xwayland-1.20.4-22.amzn2.0.13.x86_64
xorg-x11-server-devel-1.20.4-22.amzn2.0.13.x86_64
xorg-x11-server-debuginfo-1.20.4-22.amzn2.0.13.x86_64