CVE-2016-6239 json
The mmap extension __MAP_NOFAULT in OpenBSD 5.8 and 5.9 allows attackers to cause a denial of service (kernel panic and crash) via a large…
published 2017-03-07 9 y ago modified 2026-06-17 4 mo ago also EUVD-2016-7169
- cvss
- 5.5
- version 3.0, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.5%
- EPSS 0.5% chance of exploitation in 30 days, percentile 42%
- public exploits
- 0
- none known
Summary
The mmap extension __MAP_NOFAULT in OpenBSD 5.8 and 5.9 allows attackers to cause a denial of service (kernel panic and crash) via a large size value.
Exploit prediction
0.48% chance of exploitation in the next 30 days, higher than 42% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- openwall.com http://www.openwall.com/lists/oss-security/2016/07/17/7 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-20 Improper Input Validation
References
-
openwall.com
/lists/oss-security/2016/07/17/7
mailing-list, exploit, third-party-advisory
-
securitytracker.com
/id/1036318
vdb-entry
-
openbsd.org
/errata59.html
release-notes
-
openwall.com
/lists/oss-security/2016/07/14/5
mailing-list, third-party-advisory
-
openbsd.org
/errata58.html
release-notes
-
securityfocus.com
/bid/91805
vdb-entry
Sources
- CVE List CVE-2016-6239
- NVD CVE-2016-6239
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