RLSA-2026:99623

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Source
https://errata.rockylinux.org/RLSA-2026:99623
Import Source
https://storage.googleapis.com/resf-osv-data/RLSA-2026:99623.json
JSON Data
https://api.osv.dev/v1/vulns/RLSA-2026:99623
Upstream
CVE (8)
Published
2026-11-13T06:01:39Z
Modified
2026-11-13T06:30:09Z
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: tigervnc security update
Details

Virtual Network Computing (VNC) is a remote display system which allows users to view a computing desktop environment not only on the machine where it is running, but from anywhere on the Internet and from a wide variety of machine architectures. TigerVNC is a suite of VNC servers and clients.

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: 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-2026:99623"
}
References
Credits
    • Rocky Enterprise Software Foundation
    • Red Hat

Affected packages

Rocky Linux:8
tigervnc-server-module-debuginfo

Package

Name
tigervnc-server-module-debuginfo
Purl
pkg:rpm/rocky-linux/tigervnc-server-module-debuginfo?distro=rocky-linux-8&epoch=0

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
0:1.15.0-11.el8_10
Database specific
Show details 
{
    "yum_repository": "AppStream"
}

Database specific

source 
"https://storage.googleapis.com/resf-osv-data/RLSA-2026:99623.json"
tigervnc

Package

Name
tigervnc
Purl
pkg:rpm/rocky-linux/tigervnc?distro=rocky-linux-8&epoch=0

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
0:1.15.0-11.el8_10
Database specific
Show details 
{
    "yum_repository": "AppStream"
}

Database specific

source 
"https://storage.googleapis.com/resf-osv-data/RLSA-2026:99623.json"
tigervnc-debuginfo

Package

Name
tigervnc-debuginfo
Purl
pkg:rpm/rocky-linux/tigervnc-debuginfo?distro=rocky-linux-8&epoch=0

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
0:1.15.0-11.el8_10
Database specific
Show details 
{
    "yum_repository": "AppStream"
}

Database specific

source 
"https://storage.googleapis.com/resf-osv-data/RLSA-2026:99623.json"
tigervnc-debugsource

Package

Name
tigervnc-debugsource
Purl
pkg:rpm/rocky-linux/tigervnc-debugsource?distro=rocky-linux-8&epoch=0

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
0:1.15.0-11.el8_10
Database specific
Show details 
{
    "yum_repository": "AppStream"
}

Database specific

source 
"https://storage.googleapis.com/resf-osv-data/RLSA-2026:99623.json"
tigervnc-server

Package

Name
tigervnc-server
Purl
pkg:rpm/rocky-linux/tigervnc-server?distro=rocky-linux-8&epoch=0

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
0:1.15.0-11.el8_10
Database specific
Show details 
{
    "yum_repository": "AppStream"
}

Database specific

source 
"https://storage.googleapis.com/resf-osv-data/RLSA-2026:99623.json"
tigervnc-server-debuginfo

Package

Name
tigervnc-server-debuginfo
Purl
pkg:rpm/rocky-linux/tigervnc-server-debuginfo?distro=rocky-linux-8&epoch=0

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
0:1.15.0-11.el8_10
Database specific
Show details 
{
    "yum_repository": "AppStream"
}

Database specific

source 
"https://storage.googleapis.com/resf-osv-data/RLSA-2026:99623.json"
tigervnc-server-minimal

Package

Name
tigervnc-server-minimal
Purl
pkg:rpm/rocky-linux/tigervnc-server-minimal?distro=rocky-linux-8&epoch=0

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
0:1.15.0-11.el8_10
Database specific
Show details 
{
    "yum_repository": "AppStream"
}

Database specific

source 
"https://storage.googleapis.com/resf-osv-data/RLSA-2026:99623.json"
tigervnc-server-minimal-debuginfo

Package

Name
tigervnc-server-minimal-debuginfo
Purl
pkg:rpm/rocky-linux/tigervnc-server-minimal-debuginfo?distro=rocky-linux-8&epoch=0

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
0:1.15.0-11.el8_10
Database specific
Show details 
{
    "yum_repository": "AppStream"
}

Database specific

source 
"https://storage.googleapis.com/resf-osv-data/RLSA-2026:99623.json"
tigervnc-server-module

Package

Name
tigervnc-server-module
Purl
pkg:rpm/rocky-linux/tigervnc-server-module?distro=rocky-linux-8&epoch=0

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
0:1.15.0-11.el8_10
Database specific
Show details 
{
    "yum_repository": "AppStream"
}

Database specific

source 
"https://storage.googleapis.com/resf-osv-data/RLSA-2026:99623.json"
tigervnc

Package

Name
tigervnc
Purl
pkg:rpm/rocky-linux/tigervnc?distro=rocky-linux-8&epoch=0

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
0:1.15.0-11.el8_10
Database specific
Show details 
{
    "yum_repository": "AppStream"
}

Database specific

source 
"https://storage.googleapis.com/resf-osv-data/RLSA-2026:99623.json"
tigervnc-debuginfo

Package

Name
tigervnc-debuginfo
Purl
pkg:rpm/rocky-linux/tigervnc-debuginfo?distro=rocky-linux-8&epoch=0

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
0:1.15.0-11.el8_10
Database specific
Show details 
{
    "yum_repository": "AppStream"
}

Database specific

source 
"https://storage.googleapis.com/resf-osv-data/RLSA-2026:99623.json"
tigervnc-debugsource

Package

Name
tigervnc-debugsource
Purl
pkg:rpm/rocky-linux/tigervnc-debugsource?distro=rocky-linux-8&epoch=0

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
0:1.15.0-11.el8_10
Database specific
Show details 
{
    "yum_repository": "AppStream"
}

Database specific

source 
"https://storage.googleapis.com/resf-osv-data/RLSA-2026:99623.json"
tigervnc-server

Package

Name
tigervnc-server
Purl
pkg:rpm/rocky-linux/tigervnc-server?distro=rocky-linux-8&epoch=0

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
0:1.15.0-11.el8_10
Database specific
Show details 
{
    "yum_repository": "AppStream"
}

Database specific

source 
"https://storage.googleapis.com/resf-osv-data/RLSA-2026:99623.json"
tigervnc-server-debuginfo

Package

Name
tigervnc-server-debuginfo
Purl
pkg:rpm/rocky-linux/tigervnc-server-debuginfo?distro=rocky-linux-8&epoch=0

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
0:1.15.0-11.el8_10
Database specific
Show details 
{
    "yum_repository": "AppStream"
}

Database specific

source 
"https://storage.googleapis.com/resf-osv-data/RLSA-2026:99623.json"
tigervnc-server-minimal

Package

Name
tigervnc-server-minimal
Purl
pkg:rpm/rocky-linux/tigervnc-server-minimal?distro=rocky-linux-8&epoch=0

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
0:1.15.0-11.el8_10
Database specific
Show details 
{
    "yum_repository": "AppStream"
}

Database specific

source 
"https://storage.googleapis.com/resf-osv-data/RLSA-2026:99623.json"
tigervnc-server-minimal-debuginfo

Package

Name
tigervnc-server-minimal-debuginfo
Purl
pkg:rpm/rocky-linux/tigervnc-server-minimal-debuginfo?distro=rocky-linux-8&epoch=0

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
0:1.15.0-11.el8_10
Database specific
Show details 
{
    "yum_repository": "AppStream"
}

Database specific

source 
"https://storage.googleapis.com/resf-osv-data/RLSA-2026:99623.json"
tigervnc-server-module

Package

Name
tigervnc-server-module
Purl
pkg:rpm/rocky-linux/tigervnc-server-module?distro=rocky-linux-8&epoch=0

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
0:1.15.0-11.el8_10
Database specific
Show details 
{
    "yum_repository": "AppStream"
}

Database specific

source 
"https://storage.googleapis.com/resf-osv-data/RLSA-2026:99623.json"
tigervnc-server-module-debuginfo

Package

Name
tigervnc-server-module-debuginfo
Purl
pkg:rpm/rocky-linux/tigervnc-server-module-debuginfo?distro=rocky-linux-8&epoch=0

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
0:1.15.0-11.el8_10
Database specific
Show details 
{
    "yum_repository": "AppStream"
}

Database specific

source 
"https://storage.googleapis.com/resf-osv-data/RLSA-2026:99623.json"
tigervnc-icons

Package

Name
tigervnc-icons
Purl
pkg:rpm/rocky-linux/tigervnc-icons?distro=rocky-linux-8&epoch=0

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
0:1.15.0-11.el8_10
Database specific
Show details 
{
    "yum_repository": "AppStream"
}

Database specific

source 
"https://storage.googleapis.com/resf-osv-data/RLSA-2026:99623.json"
tigervnc-license

Package

Name
tigervnc-license
Purl
pkg:rpm/rocky-linux/tigervnc-license?distro=rocky-linux-8&epoch=0

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
0:1.15.0-11.el8_10
Database specific
Show details 
{
    "yum_repository": "AppStream"
}

Database specific

source 
"https://storage.googleapis.com/resf-osv-data/RLSA-2026:99623.json"
tigervnc-selinux

Package

Name
tigervnc-selinux
Purl
pkg:rpm/rocky-linux/tigervnc-selinux?distro=rocky-linux-8&epoch=0

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
0:1.15.0-11.el8_10
Database specific
Show details 
{
    "yum_repository": "AppStream"
}

Database specific

source 
"https://storage.googleapis.com/resf-osv-data/RLSA-2026:99623.json"