CVE-2016-6246: n/a vulnerability

CVE-2016-6246: OpenBSD 5.8 and 5.9 allows certain local users with kern.usermount privileges to cause a denial of service...

OpenBSD 5.8 and 5.9 allows certain local users with kern.usermount privileges to cause a denial of service (kernel panic) by mounting a tmpfs with a VNOVAL in the (1) username, (2) groupname, or (3) device name of the root node.

UnknownCVSS not scoredNot KEV-listedUpdatedAug 6, 2024, 01:22 UTC (UTC+00:00)

Security readout for executives and security teams

A local user with OpenBSD user-mount privileges could crash the kernel on OpenBSD 5.8 or 5.9. The documented impact is denial of service, not remote access or data theft. Business urgency depends on whether any legacy OpenBSD hosts still exist and allow untrusted local users. Exposure appears limited to OpenBSD 5.8 or 5.9 systems where kern.usermount is enabled and usable by local users. The provided sources do not indicate remote exploitation or affected non-OpenBSD products. Prioritize remediation for any production, shared, or externally managed legacy OpenBSD host. If no OpenBSD 5.8 or 5.9 systems remain, business risk is likely negligible. Mitigation focus: Review OpenBSD 5.8 and 5.9 errata for vendor-provided corrections.; Apply relevant vendor errata or move affected systems to a supported release.; Disable or restrict kern.usermount where it is not operationally required..

Prepared: Jun 13, 2026, 06:02 UTC (UTC+00:00)

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

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Vulnerability profileCVE Program record

Severity: Unknown
CVSS: Not scored
Known Exploited: No
Published: Mar 7, 2017, 16:00 UTC (UTC+00:00)

Official CVE source material

CNA and ADP enrichment extracted from CVE v5

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1Source links

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Source materials

CVE List V5 sourceCVE List V5

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus

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Weakness

CWE details

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