CVE-2026-50263
CVE-2026-50263 · Xorg-x11-server: xorg-x11-server-xwayland: xorg-x11-server: use-after-free information disclosure in createsaverwindow()
This page contains facts from public vulnerability sources. Check the original advisory before updating.
This page shows selected source facts. See the linked advisories for the complete description and affected versions.
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.
CVSS 5.5 · Medium · EPSS 0.1% · Fix available
- Published
- Updated
Stack: system
Affected products and versions
red hat enterprise linux 10
- Versions
- ≥ 0:24.1.9-4.el10_2.2: Not affected (rpm)
No fix published
red hat enterprise linux 10.0 extended update support
- Versions
- ≥ 0:24.1.5-6.el10_0.1: Not affected (rpm)
No fix published
red hat enterprise linux 6 extended lifecycle support - extension
- Versions
- ≥ 0:1.1.0-25.el6_10.18: Not affected (rpm)
No fix published
red hat enterprise linux 7 extended lifecycle support
- Versions
- ≥ 0:1.20.4-35.el7_9: Not affected (rpm)
No fix published
red hat enterprise linux 7 extended lifecycle support
- Versions
- ≥ 0:1.8.0-36.el7_9.5: Not affected (rpm)
No fix published
red hat enterprise linux 8
- Versions
- ≥ 0:21.1.3-20.el8_10.2: Not affected (rpm)
No fix published
red hat enterprise linux 8
- Versions
- ≥ 0:1.20.11-28.el8_10.2: Not affected (rpm)
No fix published
red hat enterprise linux 8
- Versions
- ≥ 0:1.15.0-10.el8_10: Not affected (rpm)
No fix published
red hat enterprise linux 8.4 advanced mission critical update support
- Versions
- ≥ 0:1.20.10-5.el8_4: Not affected (rpm)
No fix published
red hat enterprise linux 8.4 advanced mission critical update support
- Versions
- ≥ 0:1.11.0-8.el8_4.16: Not affected (rpm)
No fix published
red hat enterprise linux 8.4 extended update support long-life add-on
- Versions
- ≥ 0:1.20.10-5.el8_4: Not affected (rpm)
No fix published
red hat enterprise linux 8.4 extended update support long-life add-on
- Versions
- ≥ 0:1.11.0-8.el8_4.16: Not affected (rpm)
No fix published
red hat enterprise linux 8.6 advanced mission critical update support
- Versions
- ≥ 0:1.20.11-8.el8_6: Not affected (rpm)
No fix published
red hat enterprise linux 8.6 advanced mission critical update support
- Versions
- ≥ 0:21.1.3-2.el8_6.7: Not affected (rpm)
No fix published
red hat enterprise linux 8.6 advanced mission critical update support
- Versions
- ≥ 0:1.12.0-6.el8_6.18: Not affected (rpm)
No fix published
red hat enterprise linux 8.6 extended update support long-life add-on
- Versions
- ≥ 0:1.20.11-8.el8_6: Not affected (rpm)
No fix published
red hat enterprise linux 8.6 extended update support long-life add-on
- Versions
- ≥ 0:21.1.3-2.el8_6.7: Not affected (rpm)
No fix published
red hat enterprise linux 8.6 extended update support long-life add-on
- Versions
- ≥ 0:1.12.0-6.el8_6.18: Not affected (rpm)
No fix published
red hat enterprise linux 8.8 telecommunications update service
- Versions
- ≥ 0:1.20.11-19.el8_8: Not affected (rpm)
No fix published
red hat enterprise linux 8.8 telecommunications update service
- Versions
- ≥ 0:21.1.3-13.el8_8.1: Not affected (rpm)
No fix published
red hat enterprise linux 8.8 telecommunications update service
- Versions
- ≥ 0:1.12.0-15.el8_8.18: Not affected (rpm)
No fix published
red hat enterprise linux 8.8 update services for sap solutions
- Versions
- ≥ 0:1.20.11-19.el8_8: Not affected (rpm)
No fix published
red hat enterprise linux 8.8 update services for sap solutions
- Versions
- ≥ 0:21.1.3-13.el8_8.1: Not affected (rpm)
No fix published
red hat enterprise linux 8.8 update services for sap solutions
- Versions
- ≥ 0:1.12.0-15.el8_8.18: Not affected (rpm)
No fix published
Original sources
- https://access.redhat.com/errata/RHSA-2026:26562
- https://access.redhat.com/errata/RHSA-2026:26566
- https://access.redhat.com/errata/RHSA-2026:26590
- https://access.redhat.com/errata/RHSA-2026:26610
- https://access.redhat.com/errata/RHSA-2026:26709
- https://access.redhat.com/errata/RHSA-2026:28923
- https://access.redhat.com/errata/RHSA-2026:29844
- https://access.redhat.com/errata/RHSA-2026:36083
- https://access.redhat.com/errata/RHSA-2026:36085
- https://access.redhat.com/errata/RHSA-2026:36086
- https://access.redhat.com/errata/RHSA-2026:36087
- https://access.redhat.com/errata/RHSA-2026:36632
- https://access.redhat.com/errata/RHSA-2026:36633
- https://access.redhat.com/errata/RHSA-2026:36634
- https://access.redhat.com/errata/RHSA-2026:36768
- https://access.redhat.com/errata/RHSA-2026:36791
- https://access.redhat.com/errata/RHSA-2026:36792
- https://access.redhat.com/errata/RHSA-2026:36798
- https://access.redhat.com/errata/RHSA-2026:38502
- https://access.redhat.com/errata/RHSA-2026:38810
- https://access.redhat.com/errata/RHSA-2026:46377
- https://access.redhat.com/errata/RHSA-2026:46382
- https://access.redhat.com/errata/RHSA-2026:46385
- https://nvd.nist.gov/vuln/detail/CVE-2026-50263