Red Hat Enterprise Linux/OpenShift Container Platform QEMU use after free

CVSS Meta Temp Score
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CTI Interest Score
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7.5$5k-$25k0.00

Summaryinfo

A vulnerability was found in Red Hat Enterprise Linux and OpenShift Container Platform and classified as critical. This vulnerability affects unknown code of the component QEMU. Executing a manipulation can lead to use after free. This vulnerability is registered as CVE-2025-11234. It is possible to launch the attack remotely. No exploit is available.

Detailsinfo

A vulnerability classified as critical was found in Red Hat Enterprise Linux and OpenShift Container Platform (the affected version is unknown). This vulnerability affects an unknown code of the component QEMU. The manipulation with an unknown input leads to a use after free vulnerability. The CWE definition for the vulnerability is CWE-416. Referencing memory after it has been freed can cause a program to crash, use unexpected values, or execute code. As an impact it is known to affect availability. CVE summarizes:

A flaw was found in QEMU. If the QIOChannelWebsock object is freed while it is waiting to complete a handshake, a GSource is leaked. This can lead to the callback firing later on and triggering a use-after-free in the use of the channel. This can be abused by a malicious client with network access to the VNC WebSocket port to cause a denial of service during the WebSocket handshake prior to the VNC client authentication.

The advisory is available at access.redhat.com. This vulnerability was named CVE-2025-11234 since 10/01/2025. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. The technical details are unknown and an exploit is not available. The structure of the vulnerability defines a possible price range of USD $5k-$25k at the moment (estimation calculated on 03/25/2026).

The vulnerability scanner Nessus provides a plugin with the ID 269461 (Linux Distros Unpatched Vulnerability : CVE-2025-11234), which helps to determine the existence of the flaw in a target environment.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the databases at Tenable (269461), EUVD (EUVD-2025-32560) and CERT Bund (WID-SEC-2025-2193). If you want to get best quality of vulnerability data, you may have to visit VulDB.

Affected

  • Amazon Linux 2
  • Red Hat Enterprise Linux
  • Ubuntu Linux
  • SUSE Linux
  • Oracle Linux
  • SUSE openSUSE
  • RESF Rocky Linux
  • Open Source QEMU

Productinfo

Type

Vendor

Name

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.5
VulDB Meta Temp Score: 7.5

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

CNA Base Score: 7.5
CNA Vector (redhat): 🔒

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: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Nessus ID: 269461
Nessus Name: Linux Distros Unpatched Vulnerability : CVE-2025-11234

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔒

Timelineinfo

10/01/2025 CVE reserved
10/03/2025 +2 days Advisory disclosed
10/03/2025 +0 days VulDB entry created
03/25/2026 +173 days VulDB entry last update

Sourcesinfo

Vendor: redhat.com

Advisory: access.redhat.com
Status: Confirmed

CVE: CVE-2025-11234 (🔒)
GCVE (CVE): GCVE-0-2025-11234
GCVE (VulDB): GCVE-100-326890
EUVD: 🔒
CERT Bund: WID-SEC-2025-2193 - QEMU: Schwachstelle ermöglicht Denial of Service

Entryinfo

Created: 10/03/2025 13:12
Updated: 03/25/2026 07:12
Changes: 10/03/2025 13:12 (62), 10/08/2025 17:26 (2), 01/04/2026 19:51 (7), 02/06/2026 16:27 (1), 02/23/2026 13:45 (1), 03/25/2026 07:12 (1)
Complete: 🔍
Cache ID: 216::103

If you want to get best quality of vulnerability data, you may have to visit VulDB.

Discussion

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