MEDIUM
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
Published Mar 7, 2017
5.5
MEDIUMCVSS 3.0
EPSS 0.48%
Description
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.
Affected products
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
5.5 MEDIUM NVD
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Attack Vector Local
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality Impact None
Integrity Impact None
Availability Impact High
4.9 MEDIUM NVD
AV:L/AC:L/Au:N/C:N/I:N/A:C
Access Vector Local
Access Complexity Low
Authentication None
Confidentiality Impact None
Integrity Impact None
Availability Impact Complete
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
0.48% 0.00485
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
EPSS probability 0.00485
Score over time
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (10 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 0.48% (0.00485) | 39.44th | v5 (v2026.06.15) |
| Jun 15, 2026 | 0.48% (0.00485) | 37.72th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.13% (0.00129) | 29.81th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.07% (0.00075) | 34.29th | v3 (v2023.03.01) |
| Jun 20, 2024 | 0.07% (0.00075) | 32.32th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.07% (0.00075) | 30.29th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.03% (0.01034) | 41.69th | v2 (v2022.01.01) |
| Sep 10, 2022 | 1.03% (0.01034) | 39.91th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.03% (0.01034) | 37.91th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.03% (0.01034) | 20.32th | v2 (v2022.01.01) |
Weaknesses (1)
References (6)
- http://www.openbsd.org/errata58.html x_refsource_CONFIRMRelease Notes
- http://www.openbsd.org/errata59.html x_refsource_CONFIRMRelease Notes
- http://www.openwall.com/lists/oss-security/2016/07/14/5 mailing-listx_refsource_MLISTMailing ListThird Party Advisory
- http://www.openwall.com/lists/oss-security/2016/07/17/7 mailing-listx_refsource_MLISTExploitMailing ListThird Party Advisory
- http://www.securityfocus.com/bid/91805 vdb-entryx_refsource_BID
- http://www.securitytracker.com/id/1036318 vdb-entryx_refsource_SECTRACK
| Link | Providers | Tags |
|---|---|---|
| http://www.openbsd.org/errata58.html | x_refsource_CONFIRMRelease Notes | |
| http://www.openbsd.org/errata59.html | x_refsource_CONFIRMRelease Notes | |
| http://www.openwall.com/lists/oss-security/2016/07/14/5 | mailing-listx_refsource_MLISTMailing ListThird Party Advisory | |
| http://www.openwall.com/lists/oss-security/2016/07/17/7 | mailing-listx_refsource_MLISTExploitMailing ListThird Party Advisory | |
| http://www.securityfocus.com/bid/91805 | vdb-entryx_refsource_BID | |
| http://www.securitytracker.com/id/1036318 | vdb-entryx_refsource_SECTRACK |
Change history (0)
No recorded changes yet.
Sources
CVE.org / MITRE
Status PUBLISHED
Assigner mitre
Published Mar 7, 2017
Updated Aug 6, 2024
Reserved Jul 17, 2016
Link CVE-2016-6239
CISA Vulnrichment
Updated n/a