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Rocky Linux RLSA-2026-38490 Important Buffer Overflow in Xwayland

rocky
Calendar Grey July 14, 2026
Rockylinux Esm H88
The xorg-x11-server-Xwayland update addresses important vulnerabilities, including a heap buffer overflow and a use-after-free issue. Protect your system.
Important: xorg-x11-server-Xwayland security update

Summary

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


Topics%20covered

Topics Covered

security advisory important heap buffer overflow use-after-free xorg-x11-server-xwayland rockylinux

RPMs

xorg-x11-server-Xwayland-0:24.1.9-4.el9_8.3.ppc64le.rpm

xorg-x11-server-Xwayland-0:24.1.9-4.el9_8.3.s390x.rpm

xorg-x11-server-Xwayland-0:24.1.9-4.el9_8.3.aarch64.rpm

xorg-x11-server-Xwayland-0:24.1.9-4.el9_8.3.i686.rpm

xorg-x11-server-Xwayland-0:24.1.9-4.el9_8.3.src.rpm

xorg-x11-server-Xwayland-0:24.1.9-4.el9_8.3.x86_64.rpm

xorg-x11-server-Xwayland-debuginfo-0:24.1.9-4.el9_8.3.aarch64.rpm

xorg-x11-server-Xwayland-debuginfo-0:24.1.9-4.el9_8.3.i686.rpm

xorg-x11-server-Xwayland-debuginfo-0:24.1.9-4.el9_8.3.ppc64le.rpm

xorg-x11-server-Xwayland-debuginfo-0:24.1.9-4.el9_8.3.s390x.rpm

xorg-x11-server-Xwayland-debuginfo-0:24.1.9-4.el9_8.3.x86_64.rpm

xorg-x11-server-Xwayland-debugsource-0:24.1.9-4.el9_8.3.aarch64.rpm

xorg-x11-server-Xwayland-debugsource-0:24.1.9-4.el9_8.3.i686.rpm

xorg-x11-server-Xwayland-debugsource-0:24.1.9-4.el9_8.3.ppc64le.rpm

xorg-x11-server-Xwayland-debugsource-0:24.1.9-4.el9_8.3.s390x.rpm

xorg-x11-server-Xwayland-debugsource-0:24.1.9-4.el9_8.3.x86_64.rpm

Read the Full Advisory

References

No references

CVES

https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-55999

https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-56000

Severity
important

Name: RLSA-2026:38490
Affected Products: Rocky Linux 9

Fixes

https://bugzilla.redhat.com/show_bug.cgi?id=2496165

https://bugzilla.redhat.com/show_bug.cgi?id=2496193


Topics%20covered

Topics Covered

security advisory important heap buffer overflow use-after-free xorg-x11-server-xwayland rockylinux

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