CVE-2026-58097
Received Received - Intake

Buffer Overflow in ppp(8) Command Interface

Publication date: 2026-08-26

Last updated on: 2026-08-26

Assigner: FreeBSD

Description
mp_SetEnddisc() copied a user-supplied PSN endpoint value without length validation, allowing a buffer overflow via the ppp(8) command interface. A local user with access to the ppp(8) command interface can crash ppp(8) or potentially execute arbitrary code as root.

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Meta Information

Published
2026-08-26
Last Modified
2026-08-26
Generated
2026-08-26
AI Q&A
2026-08-26
EPSS Evaluated
N/A
NVD
CVE-2026-58097
EUVD
EUVD-2026-66248

Affected Vendors & Products

Currently, no data is known.

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Exploitability

CWE
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KEV
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CWE ID Description
CWE-130 The product parses a formatted message or structure, but it does not handle or incorrectly handles a length field that is inconsistent with the actual length of the associated data.
CWE-122 A heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc().

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Executive Summary

This vulnerability involves a buffer overflow in the mp_SetEnddisc() function due to copying a user-supplied PSN endpoint value without length validation. It occurs via the ppp(8) command interface.

Detection Guidance

This vulnerability can be detected by checking for the presence of the vulnerable ppp(8) command interface on FreeBSD systems. Look for the mp_SetEnddisc() function in the ppp source code or binary. No specific commands are provided in the context to directly detect this issue.

Impact Analysis

A local user with access to the ppp(8) command interface could crash ppp(8) or potentially execute arbitrary code as root, leading to system compromise.

Mitigation Strategies

Immediate mitigation steps include restricting access to the ppp(8) command interface to trusted users only. Apply patches or updates from FreeBSD if available. Monitor system logs for crashes or unusual activity related to ppp(8).

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