What is the CVSS score of CVE-2025-39951?

CVE-2025-39951 has a CVSS 3.1 base score of 7.8 (High). CVSS vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H. EPSS exploitation probability: 0.0%.

Which versions of Linux are affected by CVE-2025-39951?

CVE-2025-39951 presents notable security risk, a use-after-free vulnerability rated CVSS 7.8. Exploitation could compromise the security of affected deployments.. A patch is available.

How to fix or mitigate CVE-2025-39951?

Within 7 days: Identify all affected systems and apply vendor patches promptly. If patching is delayed, consider network segmentation to limit exposure.

Linux CVE-2025-39951

EUVD-2025-32394 HIGH

Use After Free (CWE-416)

2025-10-04 416baaa9-dc9f-4396-8d5f-8c081fb06d67

Information Disclosure Linux Use After Free Memory Corruption

7.8

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

7.8 HIGH

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

SUSE

HIGH

qualitative

Primary rating from NVD.

CVSS VectorNVD

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Lifecycle Timeline

EUVD ID Assigned

Mar 13, 2026 - 19:56 euvd

EUVD-2025-32394

Analysis Generated

Mar 13, 2026 - 19:56 vuln.today

Patch released

Jan 23, 2026 - 20:03 nvd

Patch available

CVE Published

Oct 04, 2025 - 08:15 nvd

HIGH 7.8

DescriptionNVD

In the Linux kernel, the following vulnerability has been resolved:

um: virtio_uml: Fix use-after-free after put_device in probe

When register_virtio_device() fails in virtio_uml_probe(), the code sets vu_dev->registered = 1 even though the device was not successfully registered. This can lead to use-after-free or other issues.

Analysis

In the Linux kernel, the following vulnerability has been resolved:

um: virtio_uml: Fix use-after-free after put_device in probe

Technical ContextAI

A use-after-free vulnerability occurs when a program continues to use a pointer after the referenced memory has been freed, leading to undefined behavior. This vulnerability is classified as Use After Free (CWE-416).

RemediationAI

A vendor patch is available — apply it immediately. Use memory-safe languages. Implement proper object lifecycle management. Use static and dynamic analysis tools to detect UAF patterns.

Same weakness CWE-416 – Use After Free

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Vendor StatusVendor

SUSE

Severity: High

Product	Status
SUSE Linux Enterprise Desktop 15 SP7	Fixed
SUSE Linux Enterprise Desktop 15 SP7	Fixed
SUSE Linux Enterprise High Availability Extension 15 SP7	Fixed
SUSE Linux Enterprise High Availability Extension 15 SP7	Fixed
SUSE Linux Enterprise High Performance Computing 15 SP7	Fixed

CVE-2025-39951 vulnerability details – vuln.today

Back

Linux CVE-2025-39951

Severity by source

CVSS VectorNVD

Lifecycle Timeline

DescriptionNVD

Analysis

Technical ContextAI

RemediationAI

Same weakness CWE-416 – Use After Free

Same technique Information Disclosure

Vendor StatusVendor

SUSE

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External POC / Exploit Code