CVE-2025-0662

Kernel memory disclosure via sockaddr over-copy

Published Jan 30, 2025 · Updated Feb 7, 2025

Uninitialized memory exposure in FreeBSD 14.2-RELEASE allows local users to read 14 bytes of kernel heap data through ktrace. The ktrcapfail() path records a variable-length sockaddr as a full struct sockaddr, copying up to 14 trailing uninitialized bytes into the userspace trace. An unprivileged local program must trigger the affected capability-mode trace path, and disclosure is limited to 14 bytes per event.

CVSS severity4.9
Medium
EPSS probability0.36%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Uninitialized memory exposure in FreeBSD 14.2-RELEASE allows local users to read 14 bytes of kernel heap data through ktrace. The ktrcapfail() path records a variable-length sockaddr as a full struct sockaddr, copying up to 14 trailing uninitialized bytes into the userspace trace. An unprivileged local program must trigger the affected capability-mode trace path, and disclosure is limited to 14 bytes per event.

The record

CVE
CVE-2025-0662
Published
Jan 30, 2025
Updated
Feb 7, 2025
Vendor
The FreeBSD Project
Product
FreeBSD
Classifications
CWE-122, T1005
Attack vector
local
Privileges
Unavailable

Timeline

How it unfolded

  1. Jan 30, 2025CVE publishedPublication date reported by the CVE source.
  2. Feb 7, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

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  1. Affected versionversion=14.2-RELEASE <p1

What conditions does exploitation require?

Attack vectorlocal
Required privilegesUnavailable in this record.

What is affected?

The FreeBSD Project · FreeBSDversion=14.2-RELEASE <p1

Published CVSS scores

4.9CISA-ADPCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
PrivilegesUnavailable
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-122Heap-based Buffer Overflow
T1005Data from Local System

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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