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NVD / CVE Program· CNA redhat

CVE-2024-0229: Xorg-x11-server: reattaching to different master device may lead to out-of-bounds memory access

Noroxi assessment

Priority: Monitor (action score 31/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 1.2% (FIRST EPSS); higher than 68.7% of all records.
  • Someone with local access to the system can trigger it. A low-privileged account is enough. No user action is required. No special conditions are required; it is repeatable.
  • Fixed version: gitlab.freedesktop.org/xorg/xserver xorg-server 21.1.11.

Low priority for now. Upgrade to gitlab.freedesktop.org/xorg/xserver xorg-server 21.1.11 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

An out-of-bounds memory access flaw was found in the X.Org server. This issue can be triggered when a device frozen by a sync grab is reattached to a different master device. This issue may lead to an application crash, local privilege escalation (if the server runs with extended privileges), or remote code execution in SSH X11 forwarding environments.

HighCVSS 7.8 · v3.1—No exploit Fix available
Published
Feb 9, 2024
Updated
Jun 17, 2026
EPSS
1.2% · 68th percentile

Report tools

JSON

Action score

31

Monitor

Low priority for now.

CVSS
31 / 40 · 7.8 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 1.2%

CISA SSVC decision

Exploitation
none
Automatable
no
Technical impact
total

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD
7.8
CNA · redhat
7.8
agree

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

Get told when this record changes

  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • A fix has been released

If any of these changes, we'll tell you in the daily email digest.

Follow CVE-2024-0229

When you'll hear from us

  • when it enters CISA KEV
  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • when EPSS rises 20 points in a week

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

VendorProduct
x.orgx server
x.orgxwayland
fedoraprojectfedora
redhatenterprise linux
redhatenterprise linux aus
redhatenterprise linux eus
redhatenterprise linux tus
redhatenterprise linux update services for sap solutions

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • fedoraproject fedora39
  • redhat enterprise linux7.0
  • redhat enterprise linux8.0
  • redhat enterprise linux9.0
  • redhat enterprise linux aus8.2
  • redhat enterprise linux aus8.4
  • redhat enterprise linux eus8.6
  • redhat enterprise linux eus8.8
  • redhat enterprise linux eus9.0
  • redhat enterprise linux eus9.2
  • redhat enterprise linux tus8.2
  • redhat enterprise linux tus8.4
  • redhat enterprise linux update services for sap solutions8.2
  • redhat enterprise linux update services for sap solutions8.4
  • x.org x serverbefore 21.1.11
  • x.org xwaylandbefore 23.2.4

Versions reported by the vendor

Affected version ranges reported by the assigning authority (redhat). Independent of NVD's CPE analysis and usually ahead of it.

  • gitlab.freedesktop.org/xorg/xserver xorg-server

    • 21.1.0 and later · before 21.1.11affected · semver

  • Red Hat Red Hat Enterprise Linux 6

    • all versionsunknown

  • Red Hat Red Hat Enterprise Linux 6 Extended Lifecycle Support - EXTENSION

    • 0:1.1.0-25.el6_10.13 and laternot affected · rpm

  • Red Hat Red Hat Enterprise Linux 7

    • 0:1.20.4-27.el7_9 and laternot affected · rpm
    • 0:1.8.0-31.el7_9 and laternot affected · rpm

  • Red Hat Red Hat Enterprise Linux 8

    • 0:1.13.1-2.el8_9.7 and laternot affected · rpm
    • 0:1.20.11-22.el8 and laternot affected · rpm
    • 0:21.1.3-15.el8 and laternot affected · rpm

  • Red Hat Red Hat Enterprise Linux 8.2 Advanced Update Support

    • 0:1.9.0-15.el8_2.9 and laternot affected · rpm

  • Red Hat Red Hat Enterprise Linux 8.2 Telecommunications Update Service

    • 0:1.9.0-15.el8_2.9 and laternot affected · rpm

  • Red Hat Red Hat Enterprise Linux 8.2 Update Services for SAP Solutions

    • 0:1.9.0-15.el8_2.9 and laternot affected · rpm

  • Red Hat Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support

    • 0:1.11.0-8.el8_4.8 and laternot affected · rpm

  • Red Hat Red Hat Enterprise Linux 8.4 Telecommunications Update Service

    • 0:1.11.0-8.el8_4.8 and laternot affected · rpm

  • Red Hat Red Hat Enterprise Linux 8.4 Update Services for SAP Solutions

    • 0:1.11.0-8.el8_4.8 and laternot affected · rpm

  • Red Hat Red Hat Enterprise Linux 8.6 Extended Update Support

    • 0:1.12.0-6.el8_6.9 and laternot affected · rpm

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
AlmaLinux:8tigervncbefore 1.13.1-2.el8_9.7.alma.11.13.1-2.el8_9.7.alma.1
AlmaLinux:8tigervnc-iconsbefore 1.13.1-2.el8_9.7.alma.11.13.1-2.el8_9.7.alma.1
AlmaLinux:8tigervnc-licensebefore 1.13.1-2.el8_9.7.alma.11.13.1-2.el8_9.7.alma.1
AlmaLinux:8tigervnc-selinuxbefore 1.13.1-2.el8_9.7.alma.11.13.1-2.el8_9.7.alma.1
AlmaLinux:8tigervnc-serverbefore 1.13.1-2.el8_9.7.alma.11.13.1-2.el8_9.7.alma.1
AlmaLinux:8tigervnc-server-minimalbefore 1.13.1-2.el8_9.7.alma.11.13.1-2.el8_9.7.alma.1
AlmaLinux:8tigervnc-server-modulebefore 1.13.1-2.el8_9.7.alma.11.13.1-2.el8_9.7.alma.1
AlmaLinux:8xorg-x11-server-commonbefore 1.20.11-22.el81.20.11-22.el8
AlmaLinux:8xorg-x11-server-develbefore 1.20.11-22.el81.20.11-22.el8
AlmaLinux:8xorg-x11-server-sourcebefore 1.20.11-22.el81.20.11-22.el8
AlmaLinux:8xorg-x11-server-Xdmxbefore 1.20.11-22.el81.20.11-22.el8
AlmaLinux:8xorg-x11-server-Xephyrbefore 1.20.11-22.el81.20.11-22.el8
AlmaLinux:8xorg-x11-server-Xnestbefore 1.20.11-22.el81.20.11-22.el8
AlmaLinux:8xorg-x11-server-Xorgbefore 1.20.11-22.el81.20.11-22.el8
AlmaLinux:8xorg-x11-server-Xvfbbefore 1.20.11-22.el81.20.11-22.el8
AlmaLinux:8xorg-x11-server-Xwaylandbefore 21.1.3-15.el821.1.3-15.el8
AlmaLinux:9tigervncbefore 1.13.1-3.el9_3.6.alma.11.13.1-3.el9_3.6.alma.1
AlmaLinux:9tigervnc-iconsbefore 1.13.1-3.el9_3.6.alma.11.13.1-3.el9_3.6.alma.1
AlmaLinux:9tigervnc-licensebefore 1.13.1-3.el9_3.6.alma.11.13.1-3.el9_3.6.alma.1
AlmaLinux:9tigervnc-selinuxbefore 1.13.1-3.el9_3.6.alma.11.13.1-3.el9_3.6.alma.1
AlmaLinux:9tigervnc-serverbefore 1.13.1-3.el9_3.6.alma.11.13.1-3.el9_3.6.alma.1
AlmaLinux:9tigervnc-server-minimalbefore 1.13.1-3.el9_3.6.alma.11.13.1-3.el9_3.6.alma.1
AlmaLinux:9tigervnc-server-modulebefore 1.13.1-3.el9_3.6.alma.11.13.1-3.el9_3.6.alma.1
AlmaLinux:9xorg-x11-server-commonbefore 1.20.11-24.el91.20.11-24.el9

+96

Same product

x.org: all records

Other highest-scoring records for the same primary product.

  • CVE-2023-6816Xorg-x11-server: heap buffer overflow in devicefocusevent and procxiquerypointer
    40Plan
  • CVE-2018-14665A flaw was found in xorg-x11-server before 1.20.3.
    40Plan
  • CVE-2007-6427The XInput extension in X.Org Xserver before 1.4.1 allows context-dependent attackers to execute arbitrary code via requests related to byte
    38Monitor

Published before and after this one in the same product

  • ← EarlierCVE-2024-0408Jan 18, 2024 · Xorg-x11-server: selinux unlabeled glx pbuffer
    22Monitor
  • ← EarlierCVE-2024-0409Jan 18, 2024 · Xorg-x11-server: selinux context corruption
    31Monitor
  • Later →CVE-2025-26594Feb 25, 2025 · X.org: xwayland: use-after-free of the root cursor
    31Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
gitlab.freedesktop.org/xorg/xserver xorg-server21.1.11Vendor (CNA)
almalinux:tigervnc1.13.1-3.el9_3.6.alma.1 · AlmaLinux:9Package registry (OSV)
almalinux:tigervnc-icons1.13.1-3.el9_3.6.alma.1 · AlmaLinux:9Package registry (OSV)
almalinux:tigervnc-license1.13.1-3.el9_3.6.alma.1 · AlmaLinux:9Package registry (OSV)
almalinux:tigervnc-selinux1.13.1-3.el9_3.6.alma.1 · AlmaLinux:9Package registry (OSV)
almalinux:tigervnc-server1.13.1-3.el9_3.6.alma.1 · AlmaLinux:9Package registry (OSV)
almalinux:tigervnc-server-minimal1.13.1-3.el9_3.6.alma.1 · AlmaLinux:9Package registry (OSV)
almalinux:tigervnc-server-module1.13.1-3.el9_3.6.alma.1 · AlmaLinux:9Package registry (OSV)
almalinux:xorg-x11-server-Xdmx1.20.11-24.el9 · AlmaLinux:9Package registry (OSV)
almalinux:xorg-x11-server-Xephyr1.20.11-24.el9 · AlmaLinux:9Package registry (OSV)
almalinux:xorg-x11-server-Xnest1.20.11-24.el9 · AlmaLinux:9Package registry (OSV)
almalinux:xorg-x11-server-Xorg1.20.11-24.el9 · AlmaLinux:9Package registry (OSV)
almalinux:xorg-x11-server-Xvfb1.20.11-24.el9 · AlmaLinux:9Package registry (OSV)
debian:xorg-server2:21.1.7-3+deb12u5 · Debian:12Package registry (OSV)
debian:xwayland2:23.2.4-1 · Debian:13Package registry (OSV)
opensuse:xorg-x11-server21.1.4-150500.7.18.1 · openSUSE:Leap 15.5Package registry (OSV)
opensuse:xwayland22.1.5-150500.7.14.1 · openSUSE:Leap 15.5Package registry (OSV)
red hat:tigervnc0:1.13.1-3.el9_3.6 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)
red hat:xorg-x11-server0:1.20.4-27.el7_9 · Red Hat:enterprise_linux:7::clientPackage registry (OSV)
red hat:xorg-x11-server-common0:1.20.4-27.el7_9 · Red Hat:enterprise_linux:7::clientPackage registry (OSV)
red hat:xorg-x11-server-debuginfo0:1.20.4-27.el7_9 · Red Hat:enterprise_linux:7::clientPackage registry (OSV)
red hat:xorg-x11-server-devel0:1.20.4-27.el7_9 · Red Hat:enterprise_linux:7::clientPackage registry (OSV)
red hat:xorg-x11-server-source0:1.20.4-27.el7_9 · Red Hat:enterprise_linux:7::clientPackage registry (OSV)
red hat:xorg-x11-server-Xdmx0:1.20.4-27.el7_9 · Red Hat:enterprise_linux:7::clientPackage registry (OSV)
red hat:xorg-x11-server-Xephyr0:1.20.4-27.el7_9 · Red Hat:enterprise_linux:7::clientPackage registry (OSV)
red hat:xorg-x11-server-Xnest0:1.20.4-27.el7_9 · Red Hat:enterprise_linux:7::clientPackage registry (OSV)
red hat:xorg-x11-server-Xorg0:1.20.4-27.el7_9 · Red Hat:enterprise_linux:7::clientPackage registry (OSV)
red hat:xorg-x11-server-Xvfb0:1.20.4-27.el7_9 · Red Hat:enterprise_linux:7::clientPackage registry (OSV)
red hat:xorg-x11-server-Xwayland0:1.20.4-27.el7_9 · Red Hat:enterprise_linux:7::clientPackage registry (OSV)
rocky linux:tigervnc0:1.13.1-2.el8_9.7 · Rocky Linux:8Package registry (OSV)

+2

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

  • CVE-2023-681622 days apartXorg-x11-server: heap buffer overflow in devicefocusevent and procxiquerypointer
    40Plan
  • CVE-2022-46340422 days apartA vulnerability was found in X.Org.
    36Monitor
  • CVE-2022-46341422 days apartA vulnerability was found in X.Org.
    36Monitor
  • CVE-2024-040922 days apartXorg-x11-server: selinux context corruption
    31Monitor
  • CVE-2023-5367107 days apartXorg-x11-server: out-of-bounds write in xichangedeviceproperty/rrchangeoutputproperty
    31Monitor
  • CVE-2025-26596382 days apartXorg: xwayland: heap overflow in xkbwritekeysyms()
    31Monitor

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

  • Someone with local access to the system can trigger it.
  • A low-privileged account is enough.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
high · data can be read
Integrity
high · data or configuration can be modified
Availability
high · the service can be disrupted
Attack vector
Local
Attack complexity
Low
Privileges required
Low
User interaction
None
Scope
Unchanged
Confidentiality impact
High
Integrity impact
High
Availability impact
High

Weakness class (CWE)

CWE-787 · Out-of-bounds Write

CVSS vector

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

nvd-primary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

MITRE has no CAPEC/ATT&CK mapping for this CWE.

Change log

  1. Fix✗ → ✓

For records you follow, these changes also arrive as notifications. →

References

Show all references (19 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records