What is the CVSS score of CVE-2025-21748?

CVE-2025-21748 has a CVSS 3.1 base score of 5.5 (Medium). CVSS vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H. EPSS exploitation probability: 0.1%.

Which versions of Linux are affected by CVE-2025-21748?

CVE-2025-21748 presents moderate security risk, a integer overflow vulnerability rated CVSS 5.5. Exploitation could cause memory corruption or application crashes.. A patch is available.

How to fix or mitigate CVE-2025-21748?

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

Linux CVE-2025-21748

MEDIUM

Integer Overflow or Wraparound (CWE-190)

2025-02-27 416baaa9-dc9f-4396-8d5f-8c081fb06d67

Buffer Overflow Linux Integer Overflow

5.5

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

5.5 MEDIUM

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

SUSE

MEDIUM

qualitative

Red Hat

5.5 MEDIUM

qualitative

Primary rating from NVD.

CVSS VectorNVD

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Lifecycle Timeline

Analysis Generated

Mar 28, 2026 - 18:28 vuln.today

Patch released

Mar 28, 2026 - 18:28 nvd

Patch available

CVE Published

Feb 27, 2025 - 03:15 nvd

MEDIUM 5.5

DescriptionNVD

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

ksmbd: fix integer overflows on 32 bit systems

On 32bit systems the addition operations in ipc_msg_alloc() can potentially overflow leading to memory corruption. Add bounds checking using KSMBD_IPC_MAX_PAYLOAD to avoid overflow.

AnalysisAI

In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix integer overflows on 32 bit systems On 32bit systems the addition operations in ipc_msg_alloc() can potentially overflow. Rated medium severity (CVSS 5.5), this vulnerability is low attack complexity.

Technical ContextAI

This vulnerability is classified as Integer Overflow (CWE-190), which allows attackers to cause unexpected behavior through arithmetic overflow. In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix integer overflows on 32 bit systems On 32bit systems the addition operations in ipc_msg_alloc() can potentially overflow leading to memory corruption. Add bounds checking using KSMBD_IPC_MAX_PAYLOAD to avoid overflow. Affected products include: Linux Linux Kernel.

RemediationAI

A vendor patch is available. Apply the latest security update as soon as possible. Validate arithmetic operations, use safe integer libraries, check bounds before allocation.

Same weakness CWE-190 – Integer Overflow or Wraparound

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Same technique Buffer Overflow

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CVE-2012-1889 HIGH POC

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Vendor StatusVendor

SUSE

Severity: Medium

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-2025-21748 vulnerability details – vuln.today

Back

Linux CVE-2025-21748

Severity by source

CVSS VectorNVD

Lifecycle Timeline

DescriptionNVD

AnalysisAI

Technical ContextAI

RemediationAI

Same weakness CWE-190 – Integer Overflow or Wraparound

Same technique Buffer Overflow

Vendor StatusVendor

SUSE

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External POC / Exploit Code