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xorg: xwayland: X.Org X server: Information exposure and denial of service via out-of-bounds memory access

🗓️ 29 Apr 2026 13:20:55Reported by RedHatType 
redhat
 redhat🔗 access.redhat.com👁 6 Views

Local attacker triggers out-of-bounds access in the X.Org server via XKB key types, exposing data or causing DoS.

Related
Packages
Refs
ReporterTitlePublishedViews
Family
FreeBSD		xwayland -- Multiple vulnerabilities
14 Apr 202600:00
–freebsd
FreeBSD		xorg-server -- Multiple vulnerabilities
14 Apr 202600:00
–freebsd
ATTACKERKB		CVE-2026-34003
23 Apr 202614:54
–attackerkb
Tenable Nessus		Amazon Linux 2023 : xorg-x11-server-Xwayland, xorg-x11-server-Xwayland-devel (ALAS2023-2026-1613)
30 Apr 202600:00
–nessus
Tenable Nessus		Amazon Linux 2023 : xorg-x11-server-common, xorg-x11-server-devel, xorg-x11-server-source (ALAS2023-2026-1614)
30 Apr 202600:00
–nessus
Tenable Nessus		Amazon Linux 2023 : tigervnc, tigervnc-icons, tigervnc-license (ALAS2023-2026-1626)
30 Apr 202600:00
–nessus
Tenable Nessus		Amazon Linux 2 : xorg-x11-server, --advisory ALAS2-2026-3268 (ALAS-2026-3268)
30 Apr 202600:00
–nessus
Tenable Nessus		Amazon Linux 2 : tigervnc, --advisory ALAS2-2026-3273 (ALAS-2026-3273)
30 Apr 202600:00
–nessus
Tenable Nessus		Alibaba Cloud Linux 3 : 0105: xorg-x11-server-Xwayland (ALINUX3-SA-2026:0105)
18 May 202600:00
–nessus
Tenable Nessus		Alibaba Cloud Linux 3 : 0108: tigervnc (ALINUX3-SA-2026:0108)
18 May 202600:00
–nessus
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OSOS VersionArchitecturePackagePackage VersionFilename
Red Hat Enterprise Linux8.10aarch64xorg-x11-server-common1.20.11-28.el8_10xorg-x11-server-common-1.20.11-28.el8_10.aarch64.rpm
Red Hat Enterprise Linux8.10ppc64lexorg-x11-server-common1.20.11-28.el8_10xorg-x11-server-common-1.20.11-28.el8_10.ppc64le.rpm
Red Hat Enterprise Linux8.10s390xxorg-x11-server-common1.20.11-28.el8_10xorg-x11-server-common-1.20.11-28.el8_10.s390x.rpm
Red Hat Enterprise Linux8.10x86_64xorg-x11-server-common1.20.11-28.el8_10xorg-x11-server-common-1.20.11-28.el8_10.x86_64.rpm
Red Hat Enterprise Linux8.10aarch64xorg-x11-server-debuginfo1.20.11-28.el8_10xorg-x11-server-debuginfo-1.20.11-28.el8_10.aarch64.rpm
Red Hat Enterprise Linux8.10i686xorg-x11-server-debuginfo1.20.11-28.el8_10xorg-x11-server-debuginfo-1.20.11-28.el8_10.i686.rpm
Red Hat Enterprise Linux8.10ppc64lexorg-x11-server-debuginfo1.20.11-28.el8_10xorg-x11-server-debuginfo-1.20.11-28.el8_10.ppc64le.rpm
Red Hat Enterprise Linux8.10s390xxorg-x11-server-debuginfo1.20.11-28.el8_10xorg-x11-server-debuginfo-1.20.11-28.el8_10.s390x.rpm
Red Hat Enterprise Linux8.10x86_64xorg-x11-server-debuginfo1.20.11-28.el8_10xorg-x11-server-debuginfo-1.20.11-28.el8_10.x86_64.rpm
Red Hat Enterprise Linux8.10aarch64xorg-x11-server-debugsource1.20.11-28.el8_10xorg-x11-server-debugsource-1.20.11-28.el8_10.aarch64.rpm
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30 Jun 2026 04:23Current
5.2Medium risk
Vulners AI Score5.2
CVSS 3.17.8
EPSS0.0025
SSVC
CWE-125
xorg servermemory accessinformation disclosuredenial of servicexkb key types
6