What is the CVSS score of CVE-2025-22040?

CVE-2025-22040 has a CVSS 3.1 base score of 8.8 (High). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H. EPSS exploitation probability: 0.1%.

Which versions of Linux are affected by CVE-2025-22040?

CVE-2025-22040 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-2025-22040?

Within 7 days: Identify all affected systems running multichannel connection There is a race condition between s and apply vendor patches promptly. If patching is delayed, consider network segmentation to limit exposure.

Linux CVE-2025-22040

HIGH

Use After Free (CWE-416)

2025-04-16 416baaa9-dc9f-4396-8d5f-8c081fb06d67

Use After Free Memory Corruption Linux Information Disclosure

8.8

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

8.8 HIGH

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

SUSE

HIGH

qualitative

Red Hat

7.8 HIGH

qualitative

Primary rating from NVD.

CVSS VectorNVD

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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Lifecycle Timeline

Analysis Generated

Mar 28, 2026 - 18:37 vuln.today

Patch released

Mar 28, 2026 - 18:37 nvd

Patch available

CVE Published

Apr 16, 2025 - 15:15 nvd

HIGH 8.8

DescriptionCVE.org

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

ksmbd: fix session use-after-free in multichannel connection

There is a race condition between session setup and ksmbd_sessions_deregister. The session can be freed before the connection is added to channel list of session. This patch check reference count of session before freeing it.

AnalysisAI

In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix session use-after-free in multichannel connection There is a race condition between session setup and. Rated high severity (CVSS 7.8), this vulnerability is low attack complexity. This Use After Free vulnerability could allow attackers to access freed memory to execute arbitrary code or crash the application.

Technical ContextAI

This vulnerability is classified as Use After Free (CWE-416), which allows attackers to access freed memory to execute arbitrary code or crash the application. In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix session use-after-free in multichannel connection There is a race condition between session setup and ksmbd_sessions_deregister. The session can be freed before the connection is added to channel list of session. This patch check reference count of session before freeing it. Affected products include: Linux Linux Kernel.

RemediationAI

A vendor patch is available. Apply the latest security update as soon as possible. Use smart pointers or garbage-collected languages. Set pointers to NULL after freeing. Enable memory sanitizers.

Same weakness CWE-416 – Use After Free

View all

CVE-2019-0708 CRITICAL POC

9.8

CVE-2015-5119 CRITICAL POC

9.8

CVE-2014-0322 HIGH POC

8.8

CVE-2012-4792 HIGH POC

8.8

CVE-2009-4324 HIGH POC

7.8

CVE-2015-0313 CRITICAL POC

9.8

CVE-2015-5122 CRITICAL POC

9.8

CVE-2013-2551 HIGH POC

8.8

Same technique Use After Free

View all

CVE-2015-5119 CRITICAL POC

9.8

CVE-2014-0322 HIGH POC

8.8

CVE-2012-4792 HIGH POC

8.8

CVE-2009-4324 HIGH POC

7.8

CVE-2015-0313 CRITICAL POC

9.8

CVE-2015-5122 CRITICAL POC

9.8

CVE-2013-2551 HIGH POC

8.8

CVE-2012-4969 HIGH POC

8.1

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-2025-22040 vulnerability details – vuln.today

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Linux CVE-2025-22040

Severity by source

CVSS VectorNVD

Lifecycle Timeline

DescriptionCVE.org

AnalysisAI

Technical ContextAI

RemediationAI

Same weakness CWE-416 – Use After Free

Same technique Use After Free

Vendor StatusVendor

SUSE

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External POC / Exploit Code