Astra Linux – Vulnerability in xwayland, xorg-server

A flaw was discovered in the X Record extension. The RecordSanityCheckRegisterClients function does not check for an integer overflow when calculating the request length, allowing a client to bypass the length checks...

Astra Linux – Vulnerability in xorg-server, xwayland

A flaw was discovered in the X.org server. Due to an improperly tracked allocation size in XkbSetCompatMap, a local attacker may be able to trigger a buffer overflow condition through a specially crafted payload. This could lead to denial of service or local privilege escalation in distributions...

Astra Linux – Vulnerability in xwayland, xorg-server

A flaw related to accessing an uninitialized pointer was discovered in X.Org and Xwayland. The compCheckRedirect function may fail if it cannot allocate the backing pixmap. In such cases, compRedirectWindow will return a BadAlloc error without validating the window tree just before processing; as...

GLSA-202608-14 : X.Org X server, XWayland: Multiple Vulnerabilities

The remote host is affected by the vulnerability described in GLSA-202608-14 X.Org X server, XWayland: Multiple Vulnerabilities Multiple vulnerabilities have been discovered in X.Org X server, XWayland. Please review the CVE identifiers referenced below for details. Tenable has extracted the...

AlmaLinux 9 : xorg-x11-server-Xwayland (ALSA-2026:38490)

The remote AlmaLinux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the ALSA-2026:38490 advisory. 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...

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...

RHSA-2026:52398 Red Hat Security Advisory: xorg-x11-server-Xwayland security update

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RHSA-2026:52397 Red Hat Security Advisory: xorg-x11-server-Xwayland security update

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RHSA-2026:52392 Red Hat Security Advisory: xorg-x11-server-Xwayland security update

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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 9.4 Update Services for SAP Solutions. 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 severi...

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...

RHEL 9 : xorg-x11-server-Xwayland (RHSA-2026:52398)

The remote Redhat Enterprise Linux 9 host has a package installed that is affected by multiple vulnerabilities as referenced in the RHSA-2026:52398 advisory. Xwayland is an X server for running X clients under Wayland. Security Fixes: xorg: X11: xserver: X.org: glamor Font Atlas Heap Buffer...

RHSA-2026:50100 Red Hat Security Advisory: xorg-x11-server-Xwayland security update

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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 9.6 Extended Update Support. 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,...

RHEL 9 : xorg-x11-server-Xwayland (RHSA-2026:50718)

The remote Redhat Enterprise Linux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2026:50718 advisory. Xwayland is an X server for running X clients under Wayland. Security Fixes: xorg: X11: xserver: X.org: glamor Font Atlas Heap Buffer...

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 10.0 Extended Update Support. 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...

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...

RHEL 10 : xorg-x11-server-Xwayland (RHSA-2026:50100)

The remote Redhat Enterprise Linux 10 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2026:50100 advisory. Xwayland is an X server for running X clients under Wayland. Security Fixes: xorg: X11: xserver: X.org: glamor Font Atlas Heap Buffer...

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...