RHSA-2025:10258 — Security Advisory
Red Hat Security Advisory: xorg-x11-server-Xwayland security update
Severity
ImportantRed Hat Product Security
Products
Official CSAF product identity
Published · July 3, 2025
Updated · June 30, 2026
Topic
An update for xorg-x11-server-Xwayland is now available for Red Hat Enterprise Linux 9.4 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, is available for each vulnerability from the CVE link(s) in the References section.
Description
Xwayland is an X server for running X clients under Wayland.
Security Fix(es):
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xorg-x11-server-Xwayland: xorg-x11-server: tigervnc: Out-of-Bounds Read in X Rendering Extension Animated Cursors (CVE-2025-49175)
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xorg-x11-server-Xwayland: xorg-x11-server: tigervnc: Integer Overflow in Big Requests Extension (CVE-2025-49176)
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xorg-x11-server-Xwayland: xorg-x11-server: tigervnc: Data Leak in XFIXES Extension's XFixesSetClientDisconnectMode (CVE-2025-49177)
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xorg-x11-server-Xwayland: xorg-x11-server: tigervnc: Unprocessed Client Request Due to Bytes to Ignore (CVE-2025-49178)
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xorg-x11-server-Xwayland: xorg-x11-server: tigervnc: Integer overflow in X Record extension (CVE-2025-49179)
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xorg-x11-server-Xwayland: xorg-x11-server: tigervnc: Integer Overflow in X Resize, Rotate and Reflect (RandR) Extension (CVE-2025-49180)
For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.