CVE-2016-6246

MEDIUM

OpenBSD 5.8 and 5.9 - Denial of Service via tmpfs Mount with VNOVAL in Root Node Metadata

Title source: llm

Description

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.

References (5)

Core 5

Core References

Release Notes x_refsource_confirm

http://www.openbsd.org/errata59.html

Mailing List, Third Party Advisory mailing-list x_refsource_mlist

http://www.openwall.com/lists/oss-security/2016/07/14/5

Exploit, Mailing List, Third Party Advisory mailing-list x_refsource_mlist

http://www.openwall.com/lists/oss-security/2016/07/17/7

Release Notes x_refsource_confirm

http://www.openbsd.org/errata58.html

Third Party Advisory, VDB Entry vdb-entry x_refsource_bid

http://www.securityfocus.com/bid/91805

Scores

CVSS v3 4.4

EPSS 0.0005

EPSS Percentile 14.3%

Attack Vector LOCAL

CVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H

Details

CWE

CWE-20

Status published

Products (2)

openbsd/openbsd 5.8

openbsd/openbsd 5.9

Published Mar 07, 2017

Tracked Since Feb 18, 2026