xorg-x11-server: tigervnc: heap-based buffer overflow privilege escalation vulnerability

A flaw was found in the X.org server. Due to improperly tracked allocation size in XkbSetCompatMap, a local attacker may be able to trigger a buffer overflow condition via a specially crafted payload, leading to denial of service or local privilege escalation in distributions where the X.org serv...

xorg-x11-server: Out-of-bounds write in XIChangeDeviceProperty/RRChangeOutputProperty

A out-of-bounds write flaw was found in the xorg-x11-server. This issue occurs due to an incorrect calculation of a buffer offset when copying data stored in the heap in the XIChangeDeviceProperty function in Xi/xiproperty.c and in RRChangeOutputProperty function in randr/rrproperty.c, allowing f...

xorg-x11-server: XvdiSelectVideoNotify use-after-free

A vulnerability was found in X.Org. This flaw occurs because the handler for the XvdiSelectVideoNotify request may write to memory after it has been freed. This flaw can lead to local privilege elevation on systems where the X server runs privileged and remote code execution for ssh X forwarding...

xorg-x11-server: DeepCopyPointerClasses use-after-free leads to privilege elevation

A vulnerability was found in X.Org. This issue occurs due to a dangling pointer in DeepCopyPointerClasses that can be exploited by ProcXkbSetDeviceInfo and ProcXkbGetDeviceInfo to read and write into freed memory. This can lead to local privilege elevation on systems where the X server runs...

xorg-x11-server: reattaching to different master device may lead to out-of-bounds memory access

An out-of-bounds memory access flaw was found in the X.Org server. This issue can be triggered when a device frozen by a sync grab is reattached to a different master device. This issue may lead to an application crash, local privilege escalation if the server runs with extended privileges, or...

xorg-x11-server: XTestSwapFakeInput stack overflow

A vulnerability was found in X.Org. The issue occurs due to the swap handler for the XTestFakeInput request of the XTest extension, possibly corrupting the stack if GenericEvents with lengths larger than 32 bytes are sent through the XTestFakeInput request. This flaw can lead to local privilege...

xorg-x11-server: out-of-bounds memory read in RRChangeOutputProperty and RRChangeProviderProperty

A flaw was found in xorg-server. A specially crafted request to RRChangeProviderProperty or RRChangeOutputProperty can trigger an integer overflow which may lead to a disclosure of sensitive information...

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...

xorg-x11-server: XkbGetKbdByName use-after-free

A vulnerability was found in X.Org. This issue occurs because the XkbCopyNames function leaves a dangling pointer to freed memory, resulting in out-of-bounds memory access on subsequent XkbGetKbdByName requests. This flaw can lead to local privilege elevation on systems where the X server runs...

xorg-x11-server: XIChangeProperty out-of-bounds access

A vulnerability was found in X.Org. The issue occurs because the handler for the XIChangeProperty request has a length-validation issue, resulting in out-of-bounds memory reads and potential information disclosure. This flaw can lead to local privilege elevation on systems where the X server runs...

xorg-x11-server: Heap buffer overread/data leakage in ProcXIPassiveGrabDevice

A heap-based buffer over-read vulnerability was found in the X.org server's ProcXIPassiveGrabDevice function. This issue occurs when byte-swapped length values are used in replies, potentially leading to memory leakage and segmentation faults, particularly when triggered by a client with a...

xorg-x11-server: heap buffer overflow in XISendDeviceHierarchyEvent

A flaw was found in X.Org server. In the XISendDeviceHierarchyEvent function, it is possible to exceed the allocated array length when certain new device IDs are added to the xXIHierarchyInfo struct. This can trigger a heap buffer overflow condition, which may lead to an application crash or remo...

RHEL 6 : tigervnc (RHSA-2025:12751)

The remote Redhat Enterprise Linux 6 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2025:12751 advisory. Virtual Network Computing VNC is a remote display system which allows users to view a computing desktop environment not only on the machine...

RockyLinux 8 : xorg-x11-server and xorg-x11-server-Xwayland (RLSA-2025:9305)

The remote RockyLinux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the RLSA-2025:9305 advisory. xorg-x11-server-Xwayland: xorg-x11-server: tigervnc: Out-of-Bounds Read in X Rendering Extension Animated Cursors CVE-2025-49175 xorg-x11-server-Xwayland...

xorg-x11-server and xorg-x11-server-Xwayland security update

An update is available for xorg-x11-server-Xwayland, 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 t...

NewStart CGSL MAIN 7.02 : xorg-x11-server Multiple Vulnerabilities (NS-SA-2025-0194)

The remote NewStart CGSL host, running version MAIN 7.02, has xorg-x11-server packages installed that are affected by multiple vulnerabilities: - A flaw was found in the X.Org server. The cursor code in both Xephyr and Xwayland uses the wrong type of private at creation. It uses the cursor bits...

xorg-x11-server security update

1.20.4-29.0.3 - Fix CVE-2025-49175, CVE-2025-49176, CVE-2025-49178, CVE-2025-49179, CVE-2025-49180 Orabug: 38157695 1.20.4-29.0.1 - Fixed CVE-2025-26594 CVE-2025-26595 CVE-2025-26596 - CVE-2025-26597 CVE-2025-26598 CVE-2025-26599 CVE-2025-26600 - CVE-2025-26601 Orabug: 37712847...

EulerOS 2.0 SP12 : xorg-x11-server (EulerOS-SA-2025-1844)

According to the versions of the xorg-x11-server package installed, the EulerOS installation on the remote host is affected by the following vulnerabilities : A use-after-free flaw was found in X.Org and Xwayland. When changing an alarm, the values of the change mask are evaluated one after the...

Huawei EulerOS: Security Advisory for xorg-x11-server (EulerOS-SA-2025-1844)

The remote host is missing an update for the Huawei EulerOS SPDX-FileCopyrightText: 2025 Greenbone AG Some text descriptions might be excerpted from a referenced sources, and are Copyright C by the respective right holders. SPDX-License-Identifier: GPL-2.0-only ifdescription...

Huawei EulerOS: Security Advisory for xorg-x11-server (EulerOS-SA-2025-1845)

The remote host is missing an update for the Huawei EulerOS SPDX-FileCopyrightText: 2025 Greenbone AG Some text descriptions might be excerpted from a referenced sources, and are Copyright C by the respective right holders. SPDX-License-Identifier: GPL-2.0-only ifdescription...