Go to homepageCyberStrike

Menu

Star on GitHub · 3.2k
Sign inDownload

CVE-2025-21748

9.8 · CRITICAL

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 over…

Published Feb 27, 2025CWE-190EPSS 0.61%

Overview

CVE-2025-21748 is a critical-severity vulnerability. It was published on February 27, 2025 and has a CVSS 3.1 base score of 9.8 (CRITICAL).

This vulnerability has a CVSS 3.1 base score of 9.8, rated CRITICAL. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

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.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refgit.kernel.org/stable/c/760568c1f62ea874e8fb492f9cfa4f47b4b8391eRefgit.kernel.org/stable/c/82f59d64e6297f270311b16b5dcf65be406d1ea3Refgit.kernel.org/stable/c/aab98e2dbd648510f8f51b83fbf4721206ccae45Refgit.kernel.org/stable/c/b4b902737746c490258de5cb55cab39e79927a67Refgit.kernel.org/stable/c/ecb9947fa7c99a77b04d43404c6988a0d326e4a0Refgit.kernel.org/stable/c/f3b9fb2764591d792d160f375851013665a9e820Reflists.debian.org/debian-lts-announce/2025/03/msg00028.html

How CyberStrike helps

Frequently asked questions

What is CVE-2025-21748?

CVE-2025-21748 is a critical-severity vulnerability. It was published on February 27, 2025 and has a CVSS 3.1 base score of 9.8 (CRITICAL).

How severe is CVE-2025-21748?

This vulnerability has a CVSS 3.1 base score of 9.8, rated CRITICAL. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2025-21748?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2025-21748?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2025-21748 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

Related CRITICAL CVEs from 2025

View all
Browse by year2026202520242023202220212020201920182017201620152014201320122011201020092008200720062005200420032002200120001999