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Important: xorg-x11-server-Xwayland security update

🗓️ 13 Jul 2026 00:00:00Reported by AlmaLinuxType 
almalinux
 almalinux🔗 errata.almalinux.org👁 2 Views

Xwayland is an X server for running X clients under Wayland. Security Fix(es): xorg: X11: xserver: X.org: glamor Font Atlas Heap Buffer Overflow (CVE-2026-55999) For more details about the security issue(s), including the impact, a CVSS score, ack...

Related
Packages
Refs
ReporterTitlePublishedViews
Family
FreeBSD		xwayland -- Multiple vulnerabilities
7 Jul 202600:00
–freebsd
FreeBSD		xorg-server -- Multiple vulnerabilities
7 Jul 202600:00
–freebsd
ATTACKERKB		CVE-2026-55999
8 Jul 202608:07
–attackerkb
AlpineLinux		CVE-2026-55999
8 Jul 202608:07
–alpinelinux
AlmaLinux		Important: xorg-x11-server security update
13 Jul 202600:00
–almalinux
Circl		CVE-2026-55999
8 Jul 202610:17
–circl
CVE		CVE-2026-55999
8 Jul 202608:07
–cve
Cvelist		CVE-2026-55999 xorg-server / xwayland glamor font atlas Heap Buffer Overflow
8 Jul 202608:07
–cvelist
Debian CVE		CVE-2026-55999
8 Jul 202608:07
–debiancve
EUVD		EUVD-2026-42188
8 Jul 202608:07
–euvd
Rows per page
OSOS VersionArchitecturePackagePackage VersionFilename
almalinux8aarch64xorg-x11-server-xwayland21.1.3-20.el8_10.3xorg-x11-server-Xwayland-21.1.3-20.el8_10.3.aarch64.rpm
almalinux8x86_64xorg-x11-server-xwayland21.1.3-20.el8_10.3xorg-x11-server-Xwayland-21.1.3-20.el8_10.3.x86_64.rpm
almalinux8ppc64lexorg-x11-server-xwayland21.1.3-20.el8_10.3xorg-x11-server-Xwayland-21.1.3-20.el8_10.3.ppc64le.rpm
almalinux8s390xxorg-x11-server-xwayland21.1.3-20.el8_10.3xorg-x11-server-Xwayland-21.1.3-20.el8_10.3.s390x.rpm

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13 Jul 2026 08:55Current
6.1Medium risk
Vulners AI Score6.1
CVSS 3.17.8 - 8.5
EPSS0.00212
SSVC
2