Xorg-x11-server: xorg-x11-server-xwayland: xorg-x11-server: use-after-free information disclosure in createsaverwindow()_CVE-2026-50263

5.5 / 10

MEDIUM

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Description

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.

Basic Information

ID CVE-2026-50263

Source redhat

Published Jun 5, 2026 at 10:36

Affected Product

Vendor Red Hat

Product Red Hat Enterprise Linux 10

CWE Classification

CWE-416

References

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    "published": "2026-06-05T10:36:46.377Z",
    "modified": "2026-06-05T10:36:46.377Z",
    "type": "cve",
    "title": "Xorg-x11-server: xorg-x11-server-xwayland: xorg-x11-server: use-after-free information disclosure in createsaverwindow()",
    "source": "redhat",
    "references": "https://access.redhat.com/security/cve/CVE-2026-50263\nhttps://bugzilla.redhat.com/show_bug.cgi?id=2485388\nhttps://gitlab.freedesktop.org/xorg/xserver/-/commit/ecc634f1b2f7aa473d3a267eada98c4918bf9e05\nhttps://lists.x.org/archives/xorg-announce/2026-June/003702.html\nhttps://redhat.atlassian.net/browse/PSIRTSUPT-16950",
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