Astra Linux – Vulnerability in xwayland, xorg-server

A flaw was discovered in the XFIXES extension. The XFixesSetClientDisconnectMode handler does not validate the request length, allowing a client to read unintended memory from previous requests...

RHEL 9 : xorg-x11-server-Xwayland (RHSA-2026:26590)

The remote Redhat Enterprise Linux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2026:26590 advisory. Xwayland is an X server for running X clients under Wayland. Security Fixes: xorg-x11-server: xorg-x11-server-Xwayland: xorg-x11-server:...

[SECURITY] Fedora 43 Update: xorg-x11-server-Xwayland-24.1.12-1.fc43

Xwayland is an X server for running X clients under Wayland...

Xorg-x11-server: xorg-x11-server-xwayland: xorg-x11-server: out-of-bounds read/write in glx changedrawableattributes

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Xorg-x11-server: xorg-x11-server-xwayland: xorg-x11-server: use-after-free in syncchangecounter()

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EUVD-2026-34817

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...

CVE-2026-50261 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...

CVE-2026-50257

A use-after-free flaw was found in the X.Org X server and Xwayland in miSyncDestroyFence. A client that sets up multiple fence triggers can trigger a use-after-free function pointer call. An attacker would connect to the X server to set up a fence and await that fence, then a second X connection...

Important: Red Hat Security Advisory: tigervnc security update

An update for tigervnc is now available for Red Hat Enterprise Linux 6 Extended Lifecycle Support - EXTENSION. 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...

[SECURITY] Fedora 44 Update: xorg-x11-server-Xwayland-24.1.12-1.fc44

Xwayland is an X server for running X clients under Wayland...

openSUSE 16 Security Update : putty (openSUSE-SU-2026:20851-1)

The remote openSUSE 16 host has a package installed that is affected by a vulnerability as referenced in the openSUSE- SU-2026:20851-1 advisory. Changes in putty: - Update to release 0.84 Fixed a remotely triggerable double-free in RSA key exchange. Fixed a remotely triggerable crash assertion...

OPENSUSE-SU-2026:20851-1 Security update for putty

This update for putty fixes the following issues: Changes in putty: - Update to release 0.84 Fixed a remotely triggerable double-free in RSA key exchange. Fixed a remotely triggerable crash assertion failure - program termination in NIST ECDSA signature verification. Fixed marking of Telnet and...

PT-2026-48584

Уязвимость интерфейса libinput-device-group библиотеки libinput реализации протоколов серверов отображения X.Org и Wayland связана с неверным управлением генерацией кода. Эксплуатация уязвимости может позволить нарушителю повысить свои привилегии до уровня root и выполнить произвольный код...

RLSA-2026:19343 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...

Astra Linux - уязвимость в chromium

Before version 101.0.4951.41, using free after in the Ozone browser extension in Google Chrome allowed a remote attacker to potentially exploit heap corruption by running a Wayland test...

Astra Linux - уязвимость в wayland

An internal reference count is maintained on the buffer pool; this count increments every time a new buffer is created from the pool. The reference count is stored as an integer. On LP64 systems, this can lead to an overflow if the client creates a large number of wlshm buffer objects, or if it...

[SECURITY] Fedora 42 Update: xorg-x11-server-Xwayland-24.1.11-1.fc42

Xwayland is an X server for running X clients under Wayland...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerabilities have been resolved: drm/vmwgfx: Unmap the surface before resetting it on a plane state Switching to a new plane state requires unreferencing of all held surfaces. In the work required for mob cursors, the mapped surfaces started being cached, but...

OESA-2026-2143 xorg-x11-server-xwayland security update

Xwayland is an X server for running X clients under Wayland. %package devel Summary: Development package Requires: pkgconfig %description devel The development package provides the developmental files which are necessary for developing Wayland compositors using Xwayland. %prep %autosetup -n...