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CVE-2026-50263

Xorg-x11-server: xorg-x11-server-xwayland: xorg-x11-server: use-after-free information disclosure in createsaverwindow()

Published
Last modified
published
Not listed in CISA KEV
None on Exploit-DB, Metasploit or GitHub
  • Exploitation: none
  • Automatable: no
  • Technical impact: partial

Summary

A use-after-free flaw was found in the X.Org X server and Xwayland in CreateSaverWindow(). A client can trigger a use-after-free read after changing window attributes and forcing the screen saver, leading to information disclosure.

Timeline

  1. CVE published
  2. CISA SSVC assessment

    Exploitation: none · Automatable: no · Technical impact: partial

  3. Record last updated

Affected versions

  • xorg-x11-server-Xwayland

    Version range not reported

  • xorg-x11-server-Xwayland

    Version range not reported

  • tigervnc

    Version range not reported

  • xorg-x11-server

    Version range not reported

  • tigervnc

    Version range not reported

  • xorg-x11-server-Xwayland

    Version range not reported

  • xorg-x11-server

    Version range not reported

  • tigervnc

    Version range not reported

  • xorg-x11-server

    Version range not reported

  • tigervnc

    Version range not reported

  • xorg-x11-server

    Version range not reported

  • tigervnc

    Version range not reported

  • xorg-x11-server

    Version range not reported

  • xorg-x11-server-Xwayland

    Version range not reported

  • tigervnc

    Version range not reported

  • xorg-x11-server

    Version range not reported

  • xorg-x11-server-Xwayland

    Version range not reported

  • tigervnc

    Version range not reported

  • xorg-x11-server

    Version range not reported

  • xorg-x11-server-Xwayland

    Version range not reported

  • tigervnc

    Version range not reported

  • xorg-x11-server

    Version range not reported

  • xorg-x11-server-Xwayland

    Version range not reported

  • tigervnc

    Version range not reported

  • xorg-x11-server-Xwayland

    Version range not reported

  • xorg-x11-server

    Version range not reported

  • tigervnc

    Version range not reported

  • xorg-x11-server

    Version range not reported

  • xorg-x11-server-Xwayland

    Version range not reported

  • tigervnc

    Version range not reported

  • xorg-x11-server

    Version range not reported

  • xorg-x11-server-Xwayland

    Version range not reported

  • tigervnc

    Version range not reported

  • xorg-x11-server

    Version range not reported

  • xorg-x11-server-Xwayland

    Version range not reported

  • tigervnc

    Version range not reported

  • xorg-x11-server

    Version range not reported

References 25

access.redhat.com