X.org X11 Server present_create_notifies use after free

CVSS Meta Temp Score
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CTI Interest Score
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7.4$0-$5k0.00

Summaryinfo

A vulnerability identified as critical has been detected in X.org X11 Server. Affected by this issue is the function present_create_notifies. Performing a manipulation results in use after free. This vulnerability is reported as CVE-2025-62229. The attack requires a local approach. No exploit exists. You should upgrade the affected component.

Detailsinfo

A vulnerability classified as critical has been found in X.org X11 Server (affected version not known). This affects the function present_create_notifies. The manipulation with an unknown input leads to a use after free vulnerability. CWE is classifying the issue as CWE-416. Referencing memory after it has been freed can cause a program to crash, use unexpected values, or execute code. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

A flaw was found in the X.Org X server and Xwayland when processing X11 Present extension notifications. Improper error handling during notification creation can leave dangling pointers that lead to a use-after-free condition. This can cause memory corruption or a crash, potentially allowing an attacker to execute arbitrary code or cause a denial of service.

It is possible to read the advisory at zerodayinitiative.com. This vulnerability is uniquely identified as CVE-2025-62229. The exploitability is told to be easy. Attacking locally is a requirement. Technical details of the vulnerability are known, but there is no available exploit.

The vulnerability scanner Nessus provides a plugin with the ID 271977 (Debian dla-4353 : xdmx - security update), which helps to determine the existence of the flaw in a target environment.

Upgrading eliminates this vulnerability.

The vulnerability is also documented in the databases at Tenable (271977), EUVD (EUVD-2025-36899) and CERT Bund (WID-SEC-2025-2436). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Affected

  • Debian Linux
  • Amazon Linux 2
  • Red Hat Enterprise Linux
  • Fedora Linux
  • Ubuntu Linux
  • SUSE Linux
  • Oracle Linux
  • SUSE openSUSE
  • RESF Rocky Linux
  • OpenBSD OpenBSD
  • Open Source Xwayland
  • Open Source X.Org X11
  • IGEL OS

Productinfo

Type

Vendor

Name

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.6
VulDB Meta Temp Score: 7.4

VulDB Base Score: 7.8
VulDB Temp Score: 7.5
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 7.3
CNA Vector: 🔒

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Use after free
CWE: CWE-416 / CWE-119
CAPEC: 🔒
ATT&CK: 🔒

Physical: Partially
Local: Yes
Remote: No

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Nessus ID: 271977
Nessus Name: Debian dla-4353 : xdmx - security update

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Timelineinfo

10/29/2025 Advisory disclosed
10/29/2025 +0 days VulDB entry created
01/17/2026 +80 days VulDB entry last update

Sourcesinfo

Vendor: x.org

Advisory: zerodayinitiative.com
Status: Confirmed

CVE: CVE-2025-62229 (🔒)
GCVE (CVE): GCVE-0-2025-62229
GCVE (VulDB): GCVE-100-330507
EUVD: 🔒
CERT Bund: WID-SEC-2025-2436 - Xwayland und X.Org X11: Mehrere Schwachstellen ermöglichen nicht spezifizierten Angriff

Entryinfo

Created: 10/29/2025 23:52
Updated: 01/17/2026 17:26
Changes: 10/29/2025 23:52 (51), 10/30/2025 02:47 (7), 10/30/2025 07:32 (12), 10/30/2025 09:17 (1), 10/30/2025 13:22 (2), 10/31/2025 09:50 (1), 11/03/2025 12:16 (1), 11/09/2025 06:08 (1), 11/28/2025 16:00 (1), 01/17/2026 17:26 (1)
Complete: 🔍
Cache ID: 216::103

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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