Xorg-x11-server: out-of-bounds write in xichangedeviceproperty/rrchangeoutputproperty
A out-of-bounds write flaw was found in the xorg-x11-server. This issue occurs due to an incorrect calculation of a buffer offset when copying data stored in the heap in the XIChangeDeviceProperty function in Xi/xiproperty.c and in RRChangeOutputProperty function in randr/rrproperty.c, allowing for possible escalation of privileges or denial of service.
- BDU:2023-07145
- ALSA-2024:0010
- ALSA-2024:2169
- ALSA-2024:2170
- ALSA-2024:2995
- ALSA-2024:2996
- DLA-3631-1
- DSA-5534-1
- openSUSE-SU-2024:13361-1
- openSUSE-SU-2024:13362-1
- RHSA-2023:6802
- RHSA-2023:6808
- RHSA-2023:7373
- RHSA-2023:7388
- RHSA-2023:7405
- RHSA-2023:7428
- RHSA-2023:7436
- RHSA-2023:7526
- RHSA-2023:7533
- RHSA-2024:0010
- Published
- Oct 25, 2023
- Updated
- Jun 23, 2026
- EPSS
- 0.6% · 48th percentile
- CWE
- CWE-787
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Report tools
Action score
31
Monitor
Low priority for now.
- CVSS
- 31 / 40 · 7.8 / 10
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 0 / 30 · 0.6%
CISA SSVC decision
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
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.
Affected systems
| Vendor | Product | CPE |
|---|---|---|
| x.org | x server | cpe:2.3:a:x.org:x_server |
| x.org | xwayland | cpe:2.3:a:x.org:xwayland |
| redhat | enterprise linux | cpe:2.3:o:redhat:enterprise_linux |
| redhat | enterprise linux desktop | cpe:2.3:o:redhat:enterprise_linux_desktop |
| redhat | enterprise linux for ibm z systems | cpe:2.3:o:redhat:enterprise_linux_for_ibm_z_systems |
| redhat | enterprise linux for power big endian | cpe:2.3:o:redhat:enterprise_linux_for_power_big_endian |
| redhat | enterprise linux for power little endian | cpe:2.3:o:redhat:enterprise_linux_for_power_little_endian |
| redhat | enterprise linux for scientific computing | cpe:2.3:o:redhat:enterprise_linux_for_scientific_computing |
| redhat | enterprise linux server | cpe:2.3:o:redhat:enterprise_linux_server |
| redhat | enterprise linux workstation | cpe:2.3:o:redhat:enterprise_linux_workstation |
| fedoraproject | fedora | cpe:2.3:o:fedoraproject:fedora |
| debian | debian linux | cpe:2.3:o:debian:debian_linux |
Affected versions
NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.
- debian debian linux11.0
- debian debian linux12.0
- fedoraproject fedora37
- fedoraproject fedora38
- fedoraproject fedora39
- redhat enterprise linux7.0
- redhat enterprise linux8.0
- redhat enterprise linux9.0
- redhat enterprise linux desktop7.0
- redhat enterprise linux for ibm z systems7.0_s390x
- redhat enterprise linux for power big endian7.0_ppc64
- redhat enterprise linux for power little endian7.0_ppc64le
- redhat enterprise linux for scientific computing7.0
- redhat enterprise linux server7.0
- redhat enterprise linux workstation7.0
- x.org x serverbefore 21.1.9
- x.org xwaylandbefore 23.2.2
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.
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
- 0:1.20.4-24.el7_9 and laternot affected · rpm
- 0:1.8.0-26.el7_9 and laternot affected · rpm
Red Hat Red Hat Enterprise Linux 8
- 0:1.13.1-2.el8_9.1 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 8.1 Update Services for SAP Solutions
- 0:1.9.0-16.el8_1.4 and laternot affected · rpm
Red Hat Red Hat Enterprise Linux 8.2 Advanced Update Support
- 0:1.9.0-15.el8_2.4 and laternot affected · rpm
Red Hat Red Hat Enterprise Linux 8.2 Telecommunications Update Service
- 0:1.9.0-15.el8_2.4 and laternot affected · rpm
Red Hat Red Hat Enterprise Linux 8.2 Update Services for SAP Solutions
- 0:1.9.0-15.el8_2.4 and laternot affected · rpm
Red Hat Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support
- 0:1.11.0-8.el8_4.3 and laternot affected · rpm
Red Hat Red Hat Enterprise Linux 8.4 Telecommunications Update Service
- 0:1.11.0-8.el8_4.3 and laternot affected · rpm
Red Hat Red Hat Enterprise Linux 8.4 Update Services for SAP Solutions
- 0:1.11.0-8.el8_4.3 and laternot affected · rpm
Red Hat Red Hat Enterprise Linux 8.6 Extended Update Support
- 0:1.12.0-6.el8_6.4 and laternot affected · rpm
Package-level exposure
OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.
| Ecosystem | Package | Affected range | Fix |
|---|---|---|---|
| AlmaLinux:8 | xorg-x11-server-common | before 1.20.11-22.el8 | 1.20.11-22.el8 |
| AlmaLinux:8 | xorg-x11-server-devel | before 1.20.11-22.el8 | 1.20.11-22.el8 |
| AlmaLinux:8 | xorg-x11-server-source | before 1.20.11-22.el8 | 1.20.11-22.el8 |
| AlmaLinux:8 | xorg-x11-server-Xdmx | before 1.20.11-22.el8 | 1.20.11-22.el8 |
| AlmaLinux:8 | xorg-x11-server-Xephyr | before 1.20.11-22.el8 | 1.20.11-22.el8 |
| AlmaLinux:8 | xorg-x11-server-Xnest | before 1.20.11-22.el8 | 1.20.11-22.el8 |
| AlmaLinux:8 | xorg-x11-server-Xorg | before 1.20.11-22.el8 | 1.20.11-22.el8 |
| AlmaLinux:8 | xorg-x11-server-Xvfb | before 1.20.11-22.el8 | 1.20.11-22.el8 |
| AlmaLinux:8 | xorg-x11-server-Xwayland | before 21.1.3-15.el8 | 21.1.3-15.el8 |
| AlmaLinux:9 | tigervnc | before 1.13.1-3.el9_3.3.alma.1 | 1.13.1-3.el9_3.3.alma.1 |
| AlmaLinux:9 | tigervnc-icons | before 1.13.1-3.el9_3.3.alma.1 | 1.13.1-3.el9_3.3.alma.1 |
| AlmaLinux:9 | tigervnc-license | before 1.13.1-3.el9_3.3.alma.1 | 1.13.1-3.el9_3.3.alma.1 |
| AlmaLinux:9 | tigervnc-selinux | before 1.13.1-3.el9_3.3.alma.1 | 1.13.1-3.el9_3.3.alma.1 |
| AlmaLinux:9 | tigervnc-server | before 1.13.1-3.el9_3.3.alma.1 | 1.13.1-3.el9_3.3.alma.1 |
| AlmaLinux:9 | tigervnc-server-minimal | before 1.13.1-3.el9_3.3.alma.1 | 1.13.1-3.el9_3.3.alma.1 |
| AlmaLinux:9 | tigervnc-server-module | before 1.13.1-3.el9_3.3.alma.1 | 1.13.1-3.el9_3.3.alma.1 |
| AlmaLinux:9 | xorg-x11-server-common | before 1.20.11-24.el9 | 1.20.11-24.el9 |
| AlmaLinux:9 | xorg-x11-server-devel | before 1.20.11-24.el9 | 1.20.11-24.el9 |
| AlmaLinux:9 | xorg-x11-server-source | before 1.20.11-24.el9 | 1.20.11-24.el9 |
| AlmaLinux:9 | xorg-x11-server-Xdmx | before 1.20.11-24.el9 | 1.20.11-24.el9 |
| AlmaLinux:9 | xorg-x11-server-Xephyr | before 1.20.11-24.el9 | 1.20.11-24.el9 |
| AlmaLinux:9 | xorg-x11-server-Xnest | before 1.20.11-24.el9 | 1.20.11-24.el9 |
| AlmaLinux:9 | xorg-x11-server-Xorg | before 1.20.11-24.el9 | 1.20.11-24.el9 |
| AlmaLinux:9 | xorg-x11-server-Xvfb | before 1.20.11-24.el9 | 1.20.11-24.el9 |
+96
Same product
x.org: all recordsOther highest-scoring records for the same primary product.
- CVE-2023-6816Xorg-x11-server: heap buffer overflow in devicefocusevent and procxiquerypointer40Plan
- 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 byte38Monitor
- CVE-2026-56000xorg-x11-server / xwayland GLX contextTags Use-After-Free in CommonMakeCurrent()36Monitor
- CVE-2026-34002Xorg: xwayland: x.org x server: information disclosure or denial of service via out-of-bounds read in xkb modifier map handling36Monitor
- CVE-2026-34000Xwayland: xorg: x.org x server: information disclosure and denial of service via out-of-bounds read in xkb geometry processing.36Monitor
- CVE-2022-46344A vulnerability was found in X.Org.36Monitor
Remediation
Which version to upgrade to
Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.
| Product / package | Fixed version | Source |
|---|---|---|
| almalinux:tigervnc | 1.13.1-3.el9_3.3.alma.1 · AlmaLinux:9 | Package registry (OSV) |
| almalinux:tigervnc-icons | 1.13.1-3.el9_3.3.alma.1 · AlmaLinux:9 | Package registry (OSV) |
| almalinux:tigervnc-license | 1.13.1-3.el9_3.3.alma.1 · AlmaLinux:9 | Package registry (OSV) |
| almalinux:tigervnc-selinux | 1.13.1-3.el9_3.3.alma.1 · AlmaLinux:9 | Package registry (OSV) |
| almalinux:tigervnc-server | 1.13.1-3.el9_3.3.alma.1 · AlmaLinux:9 | Package registry (OSV) |
| almalinux:tigervnc-server-minimal | 1.13.1-3.el9_3.3.alma.1 · AlmaLinux:9 | Package registry (OSV) |
| almalinux:tigervnc-server-module | 1.13.1-3.el9_3.3.alma.1 · AlmaLinux:9 | Package registry (OSV) |
| almalinux:xorg-x11-server-Xdmx | 1.20.11-24.el9 · AlmaLinux:9 | Package registry (OSV) |
| almalinux:xorg-x11-server-Xephyr | 1.20.11-24.el9 · AlmaLinux:9 | Package registry (OSV) |
| almalinux:xorg-x11-server-Xnest | 1.20.11-24.el9 · AlmaLinux:9 | Package registry (OSV) |
| almalinux:xorg-x11-server-Xorg | 1.20.11-24.el9 · AlmaLinux:9 | Package registry (OSV) |
| almalinux:xorg-x11-server-Xvfb | 1.20.11-24.el9 · AlmaLinux:9 | Package registry (OSV) |
| debian:xorg-server | 2:21.1.7-3+deb12u2 · Debian:12 | Package registry (OSV) |
| debian:xwayland | 2:23.2.2-1 · Debian:13 | Package registry (OSV) |
| opensuse:xorg-x11-server | 21.1.4-150500.7.7.1 · openSUSE:Leap 15.5 | Package registry (OSV) |
| opensuse:xwayland | 21.1.4-150400.3.20.1 · openSUSE:Leap 15.4 | Package registry (OSV) |
| red hat:tigervnc | 0:1.9.0-16.el8_1.4 · Red Hat:rhel_e4s:8.1::appstream | Package registry (OSV) |
| red hat:xorg-x11-server | 0:1.20.4-24.el7_9 · Red Hat:enterprise_linux:7::client | Package registry (OSV) |
| red hat:xorg-x11-server-common | 0:1.20.4-24.el7_9 · Red Hat:enterprise_linux:7::client | Package registry (OSV) |
| red hat:xorg-x11-server-debuginfo | 0:1.20.4-24.el7_9 · Red Hat:enterprise_linux:7::client | Package registry (OSV) |
| red hat:xorg-x11-server-devel | 0:1.20.4-24.el7_9 · Red Hat:enterprise_linux:7::client | Package registry (OSV) |
| red hat:xorg-x11-server-source | 0:1.20.4-24.el7_9 · Red Hat:enterprise_linux:7::client | Package registry (OSV) |
| red hat:xorg-x11-server-Xdmx | 0:1.20.4-24.el7_9 · Red Hat:enterprise_linux:7::client | Package registry (OSV) |
| red hat:xorg-x11-server-Xephyr | 0:1.20.4-24.el7_9 · Red Hat:enterprise_linux:7::client | Package registry (OSV) |
| red hat:xorg-x11-server-Xnest | 0:1.20.4-24.el7_9 · Red Hat:enterprise_linux:7::client | Package registry (OSV) |
| red hat:xorg-x11-server-Xorg | 0:1.20.4-24.el7_9 · Red Hat:enterprise_linux:7::client | Package registry (OSV) |
| red hat:xorg-x11-server-Xvfb | 0:1.20.4-24.el7_9 · Red Hat:enterprise_linux:7::client | Package registry (OSV) |
| red hat:xorg-x11-server-Xwayland | 0:1.20.4-24.el7_9 · Red Hat:enterprise_linux:7::client | Package registry (OSV) |
| suse:xorg-x11-server | 1.19.6-10.56.1 · SUSE:Linux Enterprise Software Development Kit 12 SP5 | Package registry (OSV) |
| suse:xorg-x11-server | 21.1.4-150500.7.7.1 · SUSE:Linux Enterprise Module for Basesystem 15 SP5 | Package registry (OSV) |
+1
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.
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 researchersFinders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.
No credits in the CNA record.
Variant candidates
Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.
- CVE-2023-681685 days apartXorg-x11-server: heap buffer overflow in devicefocusevent and procxiquerypointer40Plan
- CVE-2022-46340315 days apartA vulnerability was found in X.Org.36Monitor
- CVE-2022-46341315 days apartA vulnerability was found in X.Org.36Monitor
- CVE-2024-040985 days apartXorg-x11-server: selinux context corruption31Monitor
- CVE-2024-0229107 days apartXorg-x11-server: reattaching to different master device may lead to out-of-bounds memory access31Monitor
- CVE-2022-2320419 days apartA flaw was found in the Xorg-x11-server.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 WriteCVSS 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.
Noroxi analysis
No Noroxi analysis for this record yet
We don't hand-write analysis for all 385,000+ vulnerabilities; that wouldn't be honest. For notable, high-impact vulnerabilities our team writes the mechanism, detection and remediation steps.
We use this product, ask for helpChange log
- Fix✗ → ✓
For records you follow, these changes also arrive as notifications. →
References
- access.redhat.com/errata/RHSA-2023:6802
- access.redhat.com/errata/RHSA-2023:6808
- access.redhat.com/errata/RHSA-2023:7373
- access.redhat.com/errata/RHSA-2023:7388
- access.redhat.com/errata/RHSA-2023:7405
- access.redhat.com/errata/RHSA-2023:7428
- access.redhat.com/errata/RHSA-2023:7436
- access.redhat.com/errata/RHSA-2023:7526
- access.redhat.com/errata/RHSA-2023:7533
- access.redhat.com/errata/RHSA-2024:0010
- access.redhat.com/errata/RHSA-2024:0128
- access.redhat.com/errata/RHSA-2024:2169
- access.redhat.com/errata/RHSA-2024:2170
- access.redhat.com/errata/RHSA-2024:2995
- access.redhat.com/errata/RHSA-2024:2996
- access.redhat.com/errata/RHSA-2025:12751
- access.redhat.com/security/cve/CVE-2023-5367
- bugzilla.redhat.com/show_bug.cgi?id=2243091
- lists.x.org/archives/xorg-announce/2023-October/003430.html
- lists.debian.org/debian-lts-announce/2023/10/msg00036.html
Vendor advisories and official records. Exploit/PoC links are deliberately left out.