CVE-2026-93522

A heap buffer overflow caused by mismatched size usage in CopyArea CPU-to-FBO path in X.Org X Server before 21.1.15 and XWayland before 24.1.14 could be used by authenticated X clients to crash or potentially execute code in the X server context...

UBUNTU-CVE-2026-93522

A heap buffer overflow caused by mismatched size usage in CopyArea CPU-to-FBO path in X.Org X Server before 21.1.15 and XWayland before 24.1.14 could be used by authenticated X clients to crash or potentially execute code in the X server context...

Linux Distros Unpatched Vulnerability : CVE-2026-93522

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - A heap buffer overflow caused by mismatched size usage in CopyArea CPU-to-FBO path in X.Org X Server before 21.1.15 and XWayland before 24.1.14 could be used by...

RLSA-2026:85191 Important: xorg-x11-server-Xwayland security update

Xwayland is an X server for running X clients under Wayland. Security Fixes: xorg-x11-server: xorg-x11-server: Arbitrary code execution via use-after-free in passive grab handling CVE-2026-93516 xorg-x11-server: xorg-x11-server: Privilege escalation via crafted RandR provider property requests...

RLSA-2026:85193 Important: xorg-x11-server-Xwayland security update

Xwayland is an X server for running X clients under Wayland. Security Fixes: xorg-x11-server: xorg-x11-server: Arbitrary code execution via use-after-free in passive grab handling CVE-2026-93516 xorg-x11-server: xorg-x11-server: Privilege escalation via crafted RandR provider property requests...

RockyLinux 9 : xorg-x11-server-Xwayland (RLSA-2026:85193)

The remote RockyLinux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the RLSA-2026:85193 advisory. xorg-x11-server: xorg-x11-server: Arbitrary code execution via use-after-free in passive grab handling CVE-2026-93516 xorg-x11-server: xorg-x11-server:...

RockyLinux 10 : xorg-x11-server-Xwayland (RLSA-2026:85191)

The remote RockyLinux 10 host has packages installed that are affected by multiple vulnerabilities as referenced in the RLSA-2026:85191 advisory. xorg-x11-server: xorg-x11-server: Arbitrary code execution via use-after-free in passive grab handling CVE-2026-93516 xorg-x11-server: xorg-x11-server:...

xorg-x11-server: glamor: size tmp_bits buffer for source coordinate range in upload_boxes

A flaw was found in xorg-x11-server. In the Glamor 2D graphics acceleration module, a buffer allocation error occurs during color depth conversion when processing an image whose source dimensions exceed the destination dimensions. A local user can exploit this vulnerability to trigger an...

xorg-x11-server: glamor: size tmp_bits buffer for source coordinate range in upload_boxes

A flaw was found in xorg-x11-server. In the Glamor 2D graphics acceleration module, a buffer allocation error occurs during color depth conversion when processing an image whose source dimensions exceed the destination dimensions. A local user can exploit this vulnerability to trigger an...

ALSA-2026:85193 Important: xorg-x11-server-Xwayland security update

Xwayland is an X server for running X clients under Wayland. Security Fixes: xorg-x11-server: xorg-x11-server: Arbitrary code execution via use-after-free in passive grab handling CVE-2026-93516 xorg-x11-server: xorg-x11-server: Privilege escalation via crafted RandR provider property requests...

ALSA-2026:85191 Important: xorg-x11-server-Xwayland security update

Xwayland is an X server for running X clients under Wayland. Security Fixes: xorg-x11-server: xorg-x11-server: Arbitrary code execution via use-after-free in passive grab handling CVE-2026-93516 xorg-x11-server: xorg-x11-server: Privilege escalation via crafted RandR provider property requests...

Important: xorg-x11-server-Xwayland security update

Xwayland is an X server for running X clients under Wayland. Security Fixes: xorg-x11-server: xorg-x11-server: Arbitrary code execution via use-after-free in passive grab handling CVE-2026-93516 xorg-x11-server: xorg-x11-server: Privilege escalation via crafted RandR provider property requests...

Rocky Linux 8 [CIQ] Security Update: xorg-x11-server-Xwayland / xorg-x11-server-Xwayland-debuginfo / etc (crlsa-2026_38488)

The Rocky Linux 8 host has packages installed that are affected by a vulnerability as referenced in the CIQ crlsa-202638488 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 CIQ securi...

Rocky Linux 10.2 [CIQ] Security Update: xorg-x11-server-Xwayland / xorg-x11-server-Xwayland-debuginfo / etc Multiple Vulnerabilities (crlsa-2026_38489)

The Rocky Linux 10.2 host has packages installed that are affected by multiple vulnerabilities as referenced in the CIQ crlsa-202638489 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...

Rocky Linux 9 [CIQ] Security Update: xorg-x11-server-Xdmx / xorg-x11-server-Xdmx-debuginfo / etc (crlsa-2026_38486)

The Rocky Linux 9 host has packages installed that are affected by a vulnerability as referenced in the CIQ crlsa-202638486 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 CIQ securi...

Rocky Linux 8 [CIQ] Security Update: xorg-x11-server-Xdmx / xorg-x11-server-Xdmx-debuginfo / etc (crlsa-2026_38487)

The Rocky Linux 8 host has packages installed that are affected by a vulnerability as referenced in the CIQ crlsa-202638487 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 CIQ securi...

Rocky Linux 9 [CIQ] Security Update: xorg-x11-server-Xwayland / xorg-x11-server-Xwayland-debuginfo / etc Multiple Vulnerabilities (crlsa-2026_38490)

The Rocky Linux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the CIQ crlsa-202638490 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 CommonMakeCurre...

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...

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...