OpenBSD 5.8 and 5.9 allows local users to cause a denial of service (NULL pointer dereference and panic) via a sysctl call with a path star…

published 2017-03-07 9 y ago modified 2026-06-17 4 mo ago also EUVD-2016-7273

cvss: 5.5; version 3.0, NVD
cisa kev: Not listed; not in CISA's catalog
epss: 0.4%; EPSS 0.4% chance of exploitation in 30 days, percentile 37%
public exploits: 0; none known

OpenBSD 5.8 and 5.9 allows local users to cause a denial of service (NULL pointer dereference and panic) via a sysctl call with a path starting with 10,9.

Patch / fix

links 2

Exploit prediction

0.43% chance of exploitation in the next 30 days, higher than 37% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

openwall.com http://www.openwall.com/lists/oss-security/2016/07/26/6 referenced PoC, tagged "exploit" by a source, unverified
openwall.com http://www.openwall.com/lists/oss-security/2016/07/26/8 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by	version	score	vector
NVD	3.0	5.5	CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
NVD	2.0	4.9	AV:L/AC:L/Au:N/C:N/I:N/A:C

Classification

Weakness

CWE-476 NULL Pointer Dereference

References

cvsweb.openbsd.org /cgi-bin/cvsweb/src/sys/kern/vfs_subr.c.diff?r1=1.248&r2=1.249
patch
cvsweb.openbsd.org /cgi-bin/cvsweb/src/sys/tmpfs/tmpfs_vfsops.c.diff?r1=1.9&r2=1.10
patch
openwall.com /lists/oss-security/2016/07/26/6
mailing-list, exploit, third-party-advisory
openwall.com /lists/oss-security/2016/07/26/8
mailing-list, exploit, third-party-advisory
securityfocus.com /bid/92140
vdb-entry

Sources

CVE List CVE-2016-6350
NVD CVE-2016-6350

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary