Go to homepageCyberStrike

Menu

Star on GitHub · 3.2k
Sign inDownload

CVE-2025-37778

9.8 · CRITICAL

In the Linux kernel, the following vulnerability has been resolved: ksmbd: Fix dangling pointer in krb_authenticate krb_authenticate frees sess->user and does not set the pointer to NULL.

Published May 1, 2025CWE-416EPSS 1.14%

Overview

CVE-2025-37778 is a critical-severity vulnerability. It was published on May 1, 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 dangling pointer in krb_authenticate

krb_authenticate frees sess->user and does not set the pointer

to NULL. It calls ksmbd_krb5_authenticate to reinitialise

sess->user but that function may return without doing so. If

that happens then smb2_sess_setup, which calls krb_authenticate,

will be accessing free'd memory when it later uses sess->user.

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/1db2451de23e98bc864c6a6e52aa0d82c91cb325Refgit.kernel.org/stable/c/1e440d5b25b7efccb3defe542a73c51005799a5fRefgit.kernel.org/stable/c/6e30c0e10210c714f3d4453dc258d4abcc70364eRefgit.kernel.org/stable/c/b61f04d5d73c53d183019bafe22fb700a739bac5Refgit.kernel.org/stable/c/d5b554bc8d554ed6ddf443d3db2fad9f665cec10Refgit.kernel.org/stable/c/e83e39a5f6a01a81411a4558a59a10f87aa88dd6Reflists.debian.org/debian-lts-announce/2025/05/msg00045.html

How CyberStrike helps

Frequently asked questions

What is CVE-2025-37778?

CVE-2025-37778 is a critical-severity vulnerability. It was published on May 1, 2025 and has a CVSS 3.1 base score of 9.8 (CRITICAL).

How severe is CVE-2025-37778?

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-2025-37778?

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-2025-37778?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2025-37778 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