CVE-2026-41285

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Source

https://cve.org/CVERecord?id=CVE-2026-41285

Import Source

https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-41285.json

JSON Data

https://api.osv.dev/v1/vulns/CVE-2026-41285

Published

2026-04-20T00:00:00Z

Modified

2026-11-11T13:23:14Z

Severity

4.3 (Medium) CVSS_V3 - CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L CVSS Calculator

Summary

[none]

Details

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.

Database specific

{
    "cna_assigner": "mitre",
    "cwe_ids": [
        "CWE-1284"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/41xxx/CVE-2026-41285.json",
    "unresolved_ranges": [
        {
            "extracted_events": [
                {
                    "range": [
                        {
                            "last_affected": "7.8"
                        }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StandardRange"
                }
            ]
        },
        {
            "extracted_events": [
                {
                    "range": [
                        {
                            "last_affected": "7.8"
                        }
                    ],
                    "source": "CPE_FIELD",
                    "strategy": "CPEApplicability"
                }
            ]
        },
        {
            "extracted_events": [
                {
                    "range": [
                        {
                            "last_affected": "7.8"
                        }
                    ],
                    "source": "DESCRIPTION"
                }
            ]
        }
    ]
}

References

Affected packages

Git / github.com/openbsd/src

Affected ranges

Type

GIT

Repo

https://github.com/openbsd/src

Events

Introduced

Fixed

086c5738bcd3c203bcc08d024fcf983cb409115f

Database specific

Show details

{
    "extracted_events": [
        {
            "range": [
                {
                    "fixed": "086c5738bcd3c203bcc08d024fcf983cb409115f"
                }
            ],
            "source": "REFERENCES_COMMIT"
        }
    ]
}

Database specific

source

"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-41285.json"

vanir_signatures

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        "deprecated": false,
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        },
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        "signature_type": "Function",
        "signature_version": "v1",
        "source": "https://github.com/openbsd/src/commit/086c5738bcd3c203bcc08d024fcf983cb409115f",
        "target": {
            "file": "sbin/slaacd/engine.c",
            "function": "debug_log_ra"
        }
    },
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        },
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        "signature_version": "v1",
        "source": "https://github.com/openbsd/src/commit/086c5738bcd3c203bcc08d024fcf983cb409115f",
        "target": {
            "file": "usr.sbin/rad/engine.c"
        }
    },
    {
        "deprecated": false,
        "digest": {
            "function_hash": "103454554488181703750540438355197157328",
            "length": 4881
        },
        "id": "CVE-2026-41285-444211c3",
        "signature_type": "Function",
        "signature_version": "v1",
        "source": "https://github.com/openbsd/src/commit/086c5738bcd3c203bcc08d024fcf983cb409115f",
        "target": {
            "file": "sbin/slaacd/engine.c",
            "function": "parse_ra"
        }
    },
    {
        "deprecated": false,
        "digest": {
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        "target": {
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    },
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        "deprecated": false,
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        },
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        "source": "https://github.com/openbsd/src/commit/086c5738bcd3c203bcc08d024fcf983cb409115f",
        "target": {
            "file": "usr.sbin/rad/engine.c",
            "function": "parse_rs"
        }
    }
]

vanir_signatures_modified

"2026-11-11T13:23:14Z"