CVE-2026-41285

In OpenBSD through 7.8, the slaacd and rad daemons have an infinite loop when they receive a crafted ICMPv6 Neighbor Discovery (ND) option (over a local network) with length zero, because of an "nd_opt_len * 8 - 2" expression with no preceding check for whether nd_opt_len is zero.

CVSS v3 4.3 MEDIUM

4.3^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.8 / Impact : 1.4

Attack Vector ADJACENT_NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact LOW

Scope UNCHANGED

References

Link	Resource
https://github.com/openbsd/src/commit/086c5738bcd3c203bcc08d024fcf983cb409115f	Patch
https://www.openbsd.org/errata78.html	Product Release Notes
https://www.rfc-editor.org/rfc/rfc4861#section-4.6	Not Applicable

Configurations

Configuration 1 (hide)

cpe:2.3:o:openbsd:openbsd:*:*:*:*:*:*:*:*

History

No history.

Information

Published : 2026-04-21 00:16

Updated : 2026-06-17 10:46

NVD link : CVE-2026-41285

Mitre link : CVE-2026-41285

CVE.ORG link : CVE-2026-41285

JSON object : View

Products Affected

openbsd

openbsd

CWE

CWE-1284

Improper Validation of Specified Quantity in Input

CWE-835

Loop with Unreachable Exit Condition ('Infinite Loop')

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