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CVE-2025-0662— Uninitialized kernel memory disclosure via ktrace(2)

Quick assessment

Affected
FreeBSD FreeBSD
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

FreeBSD ktrace是FreeBSD基金会的一个用于跟踪系统调用的工具。 FreeBSD ktrace存在安全漏洞，该漏洞源于允许未授权的用户空间程序在特定条件下泄露内核内存中的未初始化数据。

AI Predicted 5.3 Difficulty: Trivial EPSS 0.36% · P28

Possible ATT&CK Techniques 1 AI

T1005 · Data from Local System
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I. Basic Information for CVE-2025-0662

Vulnerability Information
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Vulnerability Title
Uninitialized kernel memory disclosure via ktrace(2)
Source: CVE Program / CVE List V5
Vulnerability Description
In some cases, the ktrace facility will log the contents of kernel structures to userspace. In one such case, ktrace dumps a variable-sized sockaddr to userspace. There, the full sockaddr is copied, even when it is shorter than the full size. This can result in up to 14 uninitialized bytes of kernel memory being copied out to userspace. It is possible for an unprivileged userspace program to leak 14 bytes of a kernel heap allocation to userspace.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
堆缓冲区溢出
Source: CVE Program / CVE List V5
Vulnerability Title
FreeBSD ktrace 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
FreeBSD ktrace是FreeBSD基金会的一个用于跟踪系统调用的工具。 FreeBSD ktrace存在安全漏洞，该漏洞源于允许未授权的用户空间程序在特定条件下泄露内核内存中的未初始化数据。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
FreeBSD FreeBSD 14.2-RELEASE ~ p1 -

II. Public POCs for CVE-2025-0662

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III. Intelligence Information for CVE-2025-0662

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Same Patch Batch · FreeBSD · 2025-01-30 · 3 CVEs total

CVE-2025-0374 Unprivileged access to system files
CVE-2025-0373 Buffer overflow in some filesystems via NFS

IV. Related Vulnerabilities

Same product: FreeBSD
Same vendor: FreeBSD
Same weakness: CWE-122

V. Comments for CVE-2025-0662

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