xorg-x11-server-Xwayland security update

An update is available for xorg-x11-server-Xwayland. This update affects Rocky Linux 9. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available for each vulnerability from the CVE list Xwayland is an X server for running X clients under Wayland...

RLSA-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...

RLSA-2026:38490 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 X.org: xorg-x11-server: GLX contextTags Use-After-Free in CommonMakeCurrent CVE-2026-56000 For more details about the security issues,...

RHSA-2026:38810 Red Hat Security Advisory: xorg-x11-server-Xwayland security update

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RHSA-2026:38490 Red Hat Security Advisory: xorg-x11-server-Xwayland security update

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xorg-x11-server security update

An update is available for xorg-x11-server. This update affects Rocky Linux 8. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available for each vulnerability from the CVE list X.Org is an open-source implementation of the X Window System. It...

RLSA-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...

RockyLinux 8 : xorg-x11-server-Xwayland (RLSA-2026:38488)

The remote RockyLinux 8 host has packages installed that are affected by a vulnerability as referenced in the RLSA-2026:38488 advisory. xorg: X11: xserver: X.org: glamor Font Atlas Heap Buffer Overflow CVE-2026-55999 Tenable has extracted the preceding description block directly from the RockyLin...

RockyLinux 8 : xorg-x11-server (RLSA-2026:38487)

The remote RockyLinux 8 host has packages installed that are affected by a vulnerability as referenced in the RLSA-2026:38487 advisory. xorg: X11: xserver: X.org: glamor Font Atlas Heap Buffer Overflow CVE-2026-55999 Tenable has extracted the preceding description block directly from the RockyLin...

AlmaLinux 9 : xorg-x11-server (ALSA-2026:38486)

The remote AlmaLinux 9 host has packages installed that are affected by a vulnerability as referenced in the ALSA-2026:38486 advisory. xorg: X11: xserver: X.org: glamor Font Atlas Heap Buffer Overflow CVE-2026-55999 Tenable has extracted the preceding description block directly from the AlmaLinux...

EulerOS 2.0 SP10 : xorg-x11-server (EulerOS-SA-2026-2678)

According to the versions of the xorg-x11-server packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities : A flaw was found in the X.Org X server. This vulnerability, an out-of-bounds read, affects the XKB X Keyboard Extension modifier map...

RHSA-2026:38489 Red Hat Security Advisory: xorg-x11-server-Xwayland security update

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RHSA-2026:38487 Red Hat Security Advisory: xorg-x11-server security update

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RHSA-2026:38488 Red Hat Security Advisory: xorg-x11-server-Xwayland security update

Bulletin has no description...

RHSA-2026:38486 Red Hat Security Advisory: xorg-x11-server security update

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xorg-x11-server: xorg-x11-server-Xwayland: xorg-x11-server: use-after-free information disclosure in CreateSaverWindow()

A use-after-free flaw was found in the X.Org X server and Xwayland in CreateSaverWindow. A client can trigger a use-after-free read after changing window attributes and forcing the screen saver, leading to information disclosure...

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 8.6 Advanced Mission Critical Update Support and Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On. Red Hat Product Security has rated this update as having a security impact of Important. A...

xorg-x11-server: xorg-x11-server-Xwayland: xorg-x11-server: out-of-bounds heap write in DRI2 DRIGetBuffers/DRIGetBuffersWithFormat

An out-of-bounds write flaw was found in the X.Org X server and Xwayland in DRIGetBuffers/DRIGetBuffersWithFormat. A client that requests multiple DRI2BufferBackLeft attachments and one DRI2BufferFrontLeft can trigger an out-of-bounds heap write. This may be used to crash the server, or for...

xorg-x11-server: xorg-x11-server-Xwayland: xorg-x11-server: use-after-free in SyncChangeCounter()

A use-after-free flaw was found in the X.Org X server and Xwayland in SyncChangeCounter. A client that sets up multiple SyncCounters can trigger a use-after-free when destroying those counters via a second client connection while changing those counters. This may be used to crash the server, or f...

xorg-x11-server: xorg-x11-server-Xwayland: xorg-x11-server: out-of-bounds read/write in GLX ChangeDrawableAttributes

An out-of-bounds read flaw was found in the X.Org X server and Xwayland in glXDispChangeDrawableAttributes. A wrong size validation check can read a client-controlled number of bytes, exceeding the request buffer, leading to information disclosure. A write path also exists but requires byte-swapp...