RHEL 8 : xorg-x11-server-Xwayland (RHSA-2026:38488)

The remote Redhat Enterprise Linux 8 host has a package installed that is affected by a vulnerability as referenced in the RHSA-2026:38488 advisory. Xwayland is an X server for running X clients under Wayland. Security Fixes: xorg: X11: xserver: X.org: glamor Font Atlas Heap Buffer Overflow...

RHEL 10 : xorg-x11-server-Xwayland (RHSA-2026:38489)

The remote Redhat Enterprise Linux 10 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2026:38489 advisory. Xwayland is an X server for running X clients under Wayland. Security Fixes: xorg: X11: xserver: X.org: glamor Font Atlas Heap Buffer...

CVE-2026-56000 affecting package xorg-x11-server-Xwayland for versions less than 24.1.13-1

CVE-2026-56000 affecting package xorg-x11-server-Xwayland for versions less than 24.1.13-1. An upgraded version of the package is available that resolves this issue...

[SECURITY] Fedora 43 Update: xorg-x11-server-Xwayland-24.1.13-1.fc43

Xwayland is an X server for running X clients under Wayland...

Fedora 43 : xorg-x11-server-Xwayland (2026-6a00d3109f)

The remote Fedora 43 host has a package installed that is affected by multiple vulnerabilities as referenced in the FEDORA-2026-6a00d3109f advisory. Update to xwayland 24.1.13, fixes for: CVE-2026-55999, CVE-2026-56000 Tenable has extracted the preceding description block directly from the Fedora...

OPENSUSE-SU-2026:21283-1 Security update for xwayland

This update for xwayland fixes the following issues - CVE-2026-55999: missing bounds check in glamorfontget can lead to a heap buffer overflow when a font loaded from a malicious PCF file is processed bsc1268893. - CVE-2026-56000: improper memory management in CommonMakeCurrent can lead to a heap...

SUSE-SU-2026:22617-1 Security update for xwayland

This update for xwayland fixes the following issues - CVE-2026-55999: missing bounds check in glamorfontget can lead to a heap buffer overflow when a font loaded from a malicious PCF file is processed bsc1268893. - CVE-2026-56000: improper memory management in CommonMakeCurrent can lead to a heap...

[SECURITY] Fedora 44 Update: xorg-x11-server-Xwayland-24.1.13-1.fc44

Xwayland is an X server for running X clients under Wayland...

Fedora 44 : xorg-x11-server-Xwayland (2026-a3d32667b8)

The remote Fedora 44 host has a package installed that is affected by multiple vulnerabilities as referenced in the FEDORA-2026-a3d32667b8 advisory. Update to xwayland 24.1.13, fixes for: CVE-2026-55999, CVE-2026-56000 Tenable has extracted the preceding description block directly from the Fedora...

RHSA-2026:36798 Red Hat Security Advisory: xorg-x11-server-Xwayland security update

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SUSE CVE-2026-55999

Local attackers with a X connection able to provide PCX fonts to the X server xorg-server before 21.2.24 and xwayland before 24.1.13 could cause a heap buffer overflow via SetFont due to missing glyph boundary checks...

RHEL 8 : xorg-x11-server (RHSA-2026:36768)

The remote Redhat Enterprise Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2026:36768 advisory. X.Org is an open-source implementation of the X Window System. It provides the basic low-level functionality that full-fledged graphical us...

FreeBSD : xorg-server -- Multiple vulnerabilities (d6354a08-7ad4-11f1-a315-589cfc10a551)

The version of FreeBSD installed on the remote host is prior to tested version. It is, therefore, affected by multiple vulnerabilities as referenced in the d6354a08-7ad4-11f1-a315-589cfc10a551 advisory. X.Org project reports: Multiple issues have been found in the X server and Xwayland...

SUSE SLED15 / SLES15 Security Update : xwayland (SUSE-SU-2026:2787-1)

The remote SUSE Linux SLED15 / SLEDSAP15 / SLES15 / SLESSAP15 host has a package installed that is affected by multiple vulnerabilities as referenced in the SUSE-SU-2026:2787-1 advisory. This update for xwayland fixes the following issues - CVE-2026-55999: glamor Font Atlas Heap Buffer Overflow...

RHEL 10 : xorg-x11-server-Xwayland (RHSA-2026:36798)

The remote Redhat Enterprise Linux 10 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2026:36798 advisory. Xwayland is an X server for running X clients under Wayland. Security Fixes: xorg-x11-server: xorg-x11-server-Xwayland: xorg-x11-server:...

Alibaba Cloud Linux 3 : 0183: xorg-x11-server-Xwayland (ALINUX3-SA-2026:0183)

The remote Alibaba Cloud Linux 3 host has packages installed that are affected by multiple vulnerabilities as referenced in the ALINUX3-SA-2026:0183 advisory. Package updates are available for Alibaba Cloud Linux 3 that fix the following vulnerabilities: CVE-2026-50256: A stack-based buffer...

FreeBSD : xwayland -- Multiple vulnerabilities (7ac0f35a-7aeb-11f1-a315-589cfc10a551)

The version of FreeBSD installed on the remote host is prior to tested version. It is, therefore, affected by multiple vulnerabilities as referenced in the 7ac0f35a-7aeb-11f1-a315-589cfc10a551 advisory. X.Org project reports: Multiple issues have been found in the X server and Xwayland...

RHEL 8 : xorg-x11-server (RHSA-2026:36792)

The remote Redhat Enterprise Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2026:36792 advisory. X.Org is an open-source implementation of the X Window System. It provides the basic low-level functionality that full-fledged graphical us...

RHEL 8 : xorg-x11-server (RHSA-2026:36791)

The remote Redhat Enterprise Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2026:36791 advisory. X.Org is an open-source implementation of the X Window System. It provides the basic low-level functionality that full-fledged graphical us...

CVE-2026-55999

A flaw was found in the glamorfontget function of the xorg-x11-server. This vulnerability, a heap buffer overflow, occurs when the server processes a specially crafted PCF font file where individual glyph metrics exceed the declared maximum bounds. An authenticated X client can exploit this by...