xorg: X11: xserver: X.org: glamor Font Atlas Heap Buffer Overflow

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...

Important: Red Hat Security Advisory: xorg-x11-server-Xwayland security update

An update for xorg-x11-server-Xwayland is now available for Red Hat Enterprise Linux 10. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available for each...

xorg: X11: xserver: X.org: glamor Font Atlas Heap Buffer Overflow

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...

xorg: X11: xserver: X.org: glamor Font Atlas Heap Buffer Overflow

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...

Important: Red Hat Security Advisory: xorg-x11-server-Xwayland security update

An update for xorg-x11-server-Xwayland is now available for Red Hat Enterprise Linux 8. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available for each...

Important: xorg-x11-server-Xwayland security update

Xwayland is an X server for running X clients under Wayland. Security Fixes: xorg: X11: xserver: X.org: glamor Font Atlas Heap Buffer Overflow CVE-2026-55999 For more details about the security issues, including the impact, a CVSS score, acknowledgments, and other related information, refer to th...

Important: xorg-x11-server security update

X.Org is an open-source implementation of the X Window System. It provides the basic low-level functionality that full-fledged graphical user interfaces are designed upon. Security Fixes: xorg: X11: xserver: X.org: glamor Font Atlas Heap Buffer Overflow CVE-2026-55999 For more details about the...

ALSA-2026:38488 Important: xorg-x11-server-Xwayland security update

Xwayland is an X server for running X clients under Wayland. Security Fixes: xorg: X11: xserver: X.org: glamor Font Atlas Heap Buffer Overflow CVE-2026-55999 For more details about the security issues, including the impact, a CVSS score, acknowledgments, and other related information, refer to th...

ALSA-2026:38487 Important: xorg-x11-server security update

X.Org is an open-source implementation of the X Window System. It provides the basic low-level functionality that full-fledged graphical user interfaces are designed upon. Security Fixes: xorg: X11: xserver: X.org: glamor Font Atlas Heap Buffer Overflow CVE-2026-55999 For more details about the...

RHEL 9 : xorg-x11-server-Xwayland (RHSA-2026:38490)

The remote Redhat Enterprise Linux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2026:38490 advisory. Xwayland is an X server for running X clients under Wayland. Security Fixes: xorg: X11: xserver: X.org: glamor Font Atlas Heap Buffer...

RHEL 8 : xorg-x11-server (RHSA-2026:38487)

The remote Redhat Enterprise Linux 8 host has packages installed that are affected by a vulnerability as referenced in the RHSA-2026:38487 advisory. X.Org is an open-source implementation of the X Window System. It provides the basic low-level functionality that full-fledged graphical user...

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...

openSUSE 16: xorg-x11-server / xorg-x11-server-Xvfb / xorg-x11-server-extra / etc (openSUSE-SU-2026:21273-1)

The remote openSUSE 16 host has packages installed that are affected by multiple vulnerabilities as referenced in the openSUSE-SU-2026:21273-1 advisory. This update for xorg-x11-server fixes the following issues - CVE-2026-55999: missing bounds check in glamorfontget can lead to a heap buffer...

ALSA-2026:38486 Important: xorg-x11-server security update

X.Org is an open-source implementation of the X Window System. It provides the basic low-level functionality that full-fledged graphical user interfaces are designed upon. Security Fixes: xorg: X11: xserver: X.org: glamor Font Atlas Heap Buffer Overflow CVE-2026-55999 For more details about the...

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...

[slackware-security] tigervnc

New tigervnc packages are available for Slackware 15.0 and -current to fix security issues. Here are the details from the Slackware 15.0 ChangeLog: extra/tigervnc/tigervnc-1.16.2-i586-4slack15.0.txz: Rebuilt. Recompiled against xorg-server-1.20.14, including patches for security issues: glamor Fo...

SUSE SLES15 Security Update : xorg-x11-server (SUSE-SU-2026:2789-1)

The remote SUSE Linux SLES15 / SLESSAP15 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2026:2789-1 advisory. This update for xorg-x11-server fixes the following issues - CVE-2026-55999: glamor Font Atlas Heap Buffer Overflow bsc1268893. -...

SUSE SLES12 Security Update : xorg-x11-server (SUSE-SU-2026:2792-1)

The remote SUSE Linux SLES12 host has packages installed that are affected by a vulnerability as referenced in the SUSE- SU-2026:2792-1 advisory. This update for xorg-x11-server fixes the following issue - CVE-2026-55999: missing bounds check in glamorfontget can lead to a heap buffer overflow wh...

SUSE SLES15: xorg-x11-server / xorg-x11-server-Xvfb / xorg-x11-server-extra / etc (SUSE-SU-2026:2786-1)

The remote SUSE Linux SLES15 / SLESSAP15 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2026:2786-1 advisory. This update for xorg-x11-server fixes the following issues - CVE-2026-55999: missing bounds check in glamorfontget can lead to a he...

[slackware-security] xorg-server

New xorg-server packages are available for Slackware 15.0 and -current to fix security issues. Here are the details from the Slackware 15.0 ChangeLog: patches/packages/xorg-server-1.20.14-i586-21slack15.0.txz: Rebuilt. This update fixes security issues: glamor Font Atlas Heap Buffer Overflow. GLX...