xorg-x11-server-Xwayland security update

21.1.3-20 - CVE fix for: CVE-2026-33999, CVE-2026-34000, CVE-2026-34001 CVE-2026-34002, CVE-2026-34003 Resolves: https://redhat.atlassian.net/browse/RHEL-163191 Resolves: https://redhat.atlassian.net/browse/RHEL-163287 Resolves: https://redhat.atlassian.net/browse/RHEL-163245...

RHEL 8 : xorg-x11-server-Xwayland (RHSA-2026:11656)

The remote Redhat Enterprise Linux 8 host has a package installed that is affected by multiple vulnerabilities as referenced in the RHSA-2026:11656 advisory. Xwayland is an X server for running X clients under Wayland. Security Fixes: xorg: xwayland: X.Org X server: Denial of Service via integer...

Amazon Linux 2023 : xorg-x11-server-common, xorg-x11-server-devel, xorg-x11-server-source (ALAS2023-2026-1614)

It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2023-2026-1614 advisory. XKB Integer Underflow in XkbSetCompatMap CVE-2026-33999 XKB Out-of-bounds Read in CheckSetGeom CVE-2026-34000 XSYNC Use-after-free in miSyncTriggerFence CVE-2026-34001 XKB Out-of-bounds read i...

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...

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

A flaw was found in the X.Org X server's XKB key types request validation. A local attacker could send a specially crafted request to the X server, leading to an out-of-bounds memory access vulnerability. This could result in the disclosure of sensitive information or cause the server to crash,...

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

A flaw was found in the X.Org X server's XKB key types request validation. A local attacker could send a specially crafted request to the X server, leading to an out-of-bounds memory access vulnerability. This could result in the disclosure of sensitive information or cause the server to crash,...

RHSA-2026:11369 Red Hat Security Advisory: xorg-x11-server-Xwayland security update

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Xorg: xwayland: x.org x server: use-after-free vulnerability leads to server crash and potential memory corruption

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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 9. 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...

tigervnc security update

An update is available for tigervnc. 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 Virtual Network Computing VNC is a remote display system which allows users ...

ALSA-2026:11388 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: xwayland: X.Org X server: Denial of Service via integer underflow in XKB compatibility map handling...

xorg: xwayland: X.Org X server: Use-after-free vulnerability leads to server crash and potential memory corruption

A flaw was found in the X.Org X server. This use-after-free vulnerability occurs in the XSYNC fence triggering logic, specifically within the miSyncTriggerFence function. An attacker with access to the X11 server can exploit this without user interaction, leading to a server crash and potentially...

The vulnerability of the miSyncTriggerFence() function in the XSYNC component of the Wayland protocol for X.Org XWaylan, as well as in the implementation of the X.Org Server, allows a attacker to trigger a service failure.

The vulnerability of the miSyncTriggerFence function in the XSYNC component of the Wayland protocol for X.Org XWaylan, as well as in the implementation of the X.Org Server, is related to the use of memory after it is freed. Exploiting this vulnerability could allow a attacker to cause a service...

The vulnerability of the XkbAddGeomKeyAlias() function in the XKB component of the Wayland protocol implementation for X.Org XWaylan, as well as in the X.Org Server implementation of the X Window System, allows a malicious actor to trigger a service failure.

The vulnerability of the XkbAddGeomKeyAlias function in the XKB component of the Wayland protocol implementation for X.Org XWaylan, as well as in the X.Org Server implementation of the X Window System, is related to reading data from beyond the allowed buffer size. Exploiting this vulnerability c...

Fedora 42 : xorg-x11-server (2026-2c6941716b)

The remote Fedora 42 host has a package installed that is affected by multiple vulnerabilities as referenced in the FEDORA-2026-2c6941716b advisory. Update to xserver 21.1.22, CVE fix for: CVE-2026-33999, CVE-2026-34000, CVE-2026-34001, CVE-2026-34002, CVE-2026-34003 Tenable has extracted the...

EUVD-2026-25231

A flaw was found in the X.Org X server's XKB key types request validation. A local attacker could send a specially crafted request to the X server, leading to an out-of-bounds memory access vulnerability. This could result in the disclosure of sensitive information or cause the server to crash,...

CVE-2026-34003

A flaw was found in the X.Org X server's XKB key types request validation. A local attacker could send a specially crafted request to the X server, leading to an out-of-bounds memory access vulnerability. This could result in the disclosure of sensitive information or cause the server to crash,...

CVE-2026-34003

The CVE-2026-34003 issue is a local, out-of-bounds/ buffer-overflow in the XKB key types validation of the X.Org X server (Xwayland included in affected stacks). Public reports enumerate XKB Buffer overflow in CheckKeyTypes() as the root cause, leading to possible information disclosure and Denia...

CVE-2026-34001 Xorg: xwayland: x.org x server: use-after-free vulnerability leads to server crash and potential memory corruption

A flaw was found in the X.Org X server. This use-after-free vulnerability occurs in the XSYNC fence triggering logic, specifically within the miSyncTriggerFence function. An attacker with access to the X11 server can exploit this without user interaction, leading to a server crash and potentially...

X.Org X Server 数字错误漏洞

X.Org X Server is an X Window system display server developed by the X.Org Foundation. X.Org X Server has a numerical error vulnerability, which stems from integer underflow in the XKB compatibility mapping process. This vulnerability may allow attackers to trigger a buffer overflow, leading to...