RLSA-2026:85193

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Source
https://errata.rockylinux.org/RLSA-2026:85193
Import Source
https://storage.googleapis.com/resf-osv-data/RLSA-2026:85193.json
JSON Data
https://api.osv.dev/v1/vulns/RLSA-2026:85193
Upstream
CVE (9)
  • CVE-2026-88812
  • CVE-2026-93516
  • CVE-2026-93517
  • CVE-2026-93518
  • CVE-2026-93519
  • CVE-2026-93520
  • CVE-2026-93521
  • CVE-2026-93522
  • CVE-2026-93523
Published
2026-10-20T12:05:07Z
Modified
2026-10-20T12:15:38Z
Severity
  • 7.8 (High) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
Summary
Important: xorg-x11-server-Xwayland security update
Details

Xwayland is an X server for running X clients under Wayland.

Security Fix(es):

  • xorg-x11-server: xorg-x11-server: Arbitrary code execution via use-after-free in passive grab handling (CVE-2026-93516)

  • xorg-x11-server: xorg-x11-server: Privilege escalation via crafted RandR provider property requests (CVE-2026-93521)

  • xorg-x11-server: xwayland: xorg-x11-server: Arbitrary code execution via double-free in XKB geometry handling (CVE-2026-88812)

  • xorg-x11-server: xorg-x11-server: Out-of-bounds write via unvalidated modifier in ProcXIPassiveUngrabDevice (CVE-2026-93523)

  • xorg-x11-server: glamor: size tmp_bits buffer for source coordinate range in upload_boxes (CVE-2026-93522)

  • xorg-x11-server: xorg-x11-server: arbitrary code execution via GLX RenderLarge heap-based buffer overflow (CVE-2026-93517)

  • xorg-x11-server: xorg-x11-server: arbitrary code execution via integer truncation during keyboard mapping resize (CVE-2026-93518)

  • xorg-x11-server: xorg-x11-server: Arbitrary code execution via buffer overflow in input_constrain_cursor() (CVE-2026-93519)

  • xorg-x11-server: xorg-x11-server: arbitrary code execution via out-of-bounds write in XKB keycode handling (CVE-2026-93520)

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.

Database specific 
{
    "license":  "CC-BY-4.0",
    "license_url":  "https://creativecommons.org/licenses/by/4.0/",
    "source_advisory":  "RHSA-2026:85193"
}
References
Credits
    • Rocky Enterprise Software Foundation
    • Red Hat

Affected packages

Rocky Linux:9 / xorg-x11-server-Xwayland

Package

Name
xorg-x11-server-Xwayland
Purl
pkg:rpm/rocky-linux/xorg-x11-server-Xwayland?distro=rocky-linux-9&epoch=0

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
0:24.1.9-4.el9_8.4
Database specific
Show details 
{
    "yum_repository":  "AppStream"
}

Database specific

source 
"https://storage.googleapis.com/resf-osv-data/RLSA-2026:85193.json"