What is the CVSS score of CVE-2025-21947?

CVE-2025-21947 has a CVSS 3.1 base score of 8.1 (High). CVSS vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H. EPSS exploitation probability: 0.1%.

Which versions of Linux are affected by CVE-2025-21947?

CVE-2025-21947 presents moderate security risk, a race condition vulnerability rated CVSS 4.7. Exploitation could compromise the security of affected deployments.. A patch is available.

How to fix or mitigate CVE-2025-21947?

Within 30 days: Identify affected systems and apply vendor patches as part of regular patch cycle. Vendor patch is available.

Linux CVE-2025-21947

HIGH

Race Condition (CWE-362)

2025-04-01 416baaa9-dc9f-4396-8d5f-8c081fb06d67

Information Disclosure Linux Race Condition Red Hat Suse

8.1

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

8.1 HIGH

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

SUSE

HIGH

qualitative

Red Hat

4.7 MEDIUM

qualitative

Primary rating from NVD.

CVSS VectorNVD

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

Attack Vector

Network

Attack Complexity

High

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Lifecycle Timeline

Analysis Generated

Mar 28, 2026 - 18:34 vuln.today

Patch released

Mar 28, 2026 - 18:34 nvd

Patch available

CVE Published

Apr 01, 2025 - 16:15 nvd

HIGH 8.1

DescriptionCVE.org

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

ksmbd: fix type confusion via race condition when using ipc_msg_send_request

req->handle is allocated using ksmbd_acquire_id(&ipc_ida), based on ida_alloc. req->handle from ksmbd_ipc_login_request and FSCTL_PIPE_TRANSCEIVE ioctl can be same and it could lead to type confusion between messages, resulting in access to unexpected parts of memory after an incorrect delivery. ksmbd check type of ipc response but missing add continue to check next ipc reponse.

AnalysisAI

In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix type confusion via race condition when using ipc_msg_send_request req->handle is allocated using. Rated medium severity (CVSS 4.7).

Technical ContextAI

This vulnerability is classified under CWE-362. In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix type confusion via race condition when using ipc_msg_send_request req->handle is allocated using ksmbd_acquire_id(&ipc_ida), based on ida_alloc. req->handle from ksmbd_ipc_login_request and FSCTL_PIPE_TRANSCEIVE ioctl can be same and it could lead to type confusion between messages, resulting in access to unexpected parts of memory after an incorrect delivery. ksmbd check type of ipc response but missing add continue to check next ipc reponse. Affected products include: Linux Linux Kernel.

RemediationAI

A vendor patch is available. Apply the latest security update as soon as possible. Apply vendor patches when available. Implement network segmentation and monitoring as interim mitigations.

Same weakness CWE-362 – Race Condition

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Vendor StatusVendor

SUSE

Severity: High

Product	Status
SUSE Linux Enterprise Micro 5.2	Fixed
SUSE Linux Enterprise Micro 5.2	Fixed
SUSE Linux Enterprise Micro 5.2	Fixed
SUSE Linux Enterprise Micro 5.2	Fixed
SUSE Linux Enterprise Micro 5.3	Fixed

CVE-2025-21947 vulnerability details – vuln.today

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Linux CVE-2025-21947

Severity by source

CVSS VectorNVD

Lifecycle Timeline

DescriptionCVE.org

AnalysisAI

Technical ContextAI

RemediationAI

Same weakness CWE-362 – Race Condition

Same technique Information Disclosure

Vendor StatusVendor

SUSE

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External POC / Exploit Code