RHSA-2026:26566 Red Hat Security Advisory: xorg-x11-server-Xwayland security, bug fix, and enhancement update

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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:...

Fedora 44 : xorg-x11-server-Xwayland (2026-f98eff99c4)

The remote Fedora 44 host has a package installed that is affected by a vulnerability as referenced in the FEDORA-2026-f98eff99c4 advisory. Update to xwayland 24.1.12, security fixes for ZDI-CAN-30136, ZDI-CAN-30159, ZDI-CAN-30160, ZDI-CAN-30161, ZDI-CAN-30163, ZDI-CAN-30164, ZDI-CAN-30165,...

Important: xorg-x11-server-Xwayland security update

Xwayland is an X server for running X clients under Wayland. Security Fixes: xorg: xwayland: X.Org X server: Denial of Service via integer underflow in XKB compatibility map handling CVE-2026-33999 xorg: xwayland: X.Org X server: Use-after-free vulnerability leads to server crash and potential...

RockyLinux 8 : xorg-x11-server-Xwayland (RLSA-2026:11656)

The remote RockyLinux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the RLSA-2026:11656 advisory. xorg: xwayland: X.Org X server: Denial of Service via integer underflow in XKB compatibility map handling CVE-2026-33999 xorg: xwayland: X.Org X server:...

RHSA-2026:11352 Red Hat Security Advisory: xorg-x11-server-Xwayland security update

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[SECURITY] Fedora 44 Update: xorg-x11-server-Xwayland-24.1.10-1.fc44

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

MiracleLinux 8 : xorg-x11-server-Xwayland-21.1.3-10.el8 (AXSA:2023-5920:02)

The remote MiracleLinux 8 host has a package installed that is affected by multiple vulnerabilities as referenced in the AXSA:2023-5920:02 advisory. xorg-x11-server: buffer overflow in GetCountedString in xkb/xkb.c CVE-2022-3550 xorg-x11-server: XkbGetKbdByName use-after-free CVE-2022-4283...

MiracleLinux 8 : xorg-x11-server-Xwayland-21.1.3-12.el8 (AXSA:2023-7238:04)

The remote MiracleLinux 8 host has a package installed that is affected by a vulnerability as referenced in the AXSA:2023-7238:04 advisory. xorg-x11-server: X.Org Server Overlay Window Use-After-Free Local Privilege Escalation Vulnerability CVE-2023-1393 Tenable has extracted the preceding...

MiracleLinux 8 : tigervnc-1.15.0-7.el8_10 (AXSA:2025-10034:05)

The remote MiracleLinux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the AXSA:2025-10034:05 advisory. xorg-x11-server-Xwayland: xorg-x11-server: tigervnc: Out-of-Bounds Read in X Rendering Extension Animated Cursors CVE-2025-49175...

MiracleLinux 9 : tigervnc-1.14.1-8.el9_6 (AXSA:2025-10563:07)

The remote MiracleLinux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the AXSA:2025-10563:07 advisory. xorg-x11-server-Xwayland: xorg-x11-server: tigervnc: Out-of-Bounds Read in X Rendering Extension Animated Cursors CVE-2025-49175...

Oracle Linux 9 : xorg-x11-server-Xwayland (ELSA-2025-20960)

The remote Oracle Linux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2025-20960 advisory. 23.2.7-5 - CVE fix for: CVE-2025-62229 RHEL-119974, CVE-2025-62230 RHEL-120021, CVE-2025-62231 RHEL-125017 Tenable has extracted the preceding...

[SECURITY] Fedora 42 Update: xorg-x11-server-Xwayland-24.1.9-1.fc42

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

RockyLinux 9 : tigervnc (RLSA-2025:9306)

The remote RockyLinux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the RLSA-2025:9306 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-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-x11-server-Xwayland: xorg-x11-server: tigervnc: Integer Overflow in X Resize, Rotate and Reflect (RandR) Extension

A flaw was found in the RandR extension, where the RRChangeProviderProperty function does not properly validate input. This issue leads to an integer overflow when computing the total size to allocate...

xorg-x11-server-Xwayland: xorg-x11-server: tigervnc: Integer overflow in X Record extension

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

xorg-x11-server-Xwayland: xorg-x11-server: tigervnc: Integer Overflow in Big Requests Extension

A flaw was found in the Big Requests extension. The request length is multiplied by 4 before checking against the maximum allowed size, potentially causing an integer overflow and bypassing the size check...

xorg-x11-server-Xwayland: xorg-x11-server: tigervnc: Out-of-Bounds Read in X Rendering Extension Animated Cursors

A flaw was found in the X Rendering extension's handling of animated cursors. If a client provides no cursors, the server assumes at least one is present, leading to an out-of-bounds read and potential crash...

xorg-x11-server-Xwayland: xorg-x11-server: tigervnc: Integer Overflow in X Resize, Rotate and Reflect (RandR) Extension

A flaw was found in the RandR extension, where the RRChangeProviderProperty function does not properly validate input. This issue leads to an integer overflow when computing the total size to allocate...