CVE-2016-6522

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Summary

CVECVE-2016-6522
StatePUBLISHED
Assignermitre
Source PriorityCVE Program / NVD first with legacy fallback
Published2017-03-07 16:59:00 UTC
Updated2025-04-20 01:37:25 UTC
DescriptionInteger overflow in the uvm_map_isavail function in uvm/uvm_map.c in OpenBSD 5.9 allows local users to cause a denial of service (kernel panic) via a crafted mmap call, which triggers the new mapping to overlap with an existing mapping.

Risk And Classification

Primary CVSS: v3.0 5.5 MEDIUM from [email protected]

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

Problem Types: CWE-190 | n/a

VersionSourceTypeScoreSeverityVector
3.0[email protected]Primary5.5MEDIUMCVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
2.0[email protected]Primary4.9AV:L/AC:L/Au:N/C:N/I:N/A:C

CVSS v3.0 Breakdown

Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

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

CVSS v2.0 Breakdown

Access Vector
Local
Access Complexity
Low
Authentication
None
Confidentiality
None
Integrity
None
Availability
Complete

AV:L/AC:L/Au:N/C:N/I:N/A:C

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Operating System Openbsd Openbsd 5.9 All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Na N/a affected n/a Not specified

References

ReferenceSourceLinkTags
ftp.openbsd.org/pub/OpenBSD/patches/5.9/common/023_uvmisavail.patch.sig af854a3a-2127-422b-91ae-364da2661108 ftp.openbsd.org Patch
OpenBSD CVE-2016-6522 Integer Overflow Vulnerability af854a3a-2127-422b-91ae-364da2661108 www.securityfocus.com
oss-security - Re: CVE Request: Denial-of-Service / Unexploitable Memory Corruption in mmap() on OpenBSD af854a3a-2127-422b-91ae-364da2661108 www.openwall.com Exploit, Mailing List, Third Party Advisory
oss-security - CVE Request: Denial-of-Service / Unexploitable Memory Corruption in mmap() on OpenBSD af854a3a-2127-422b-91ae-364da2661108 www.openwall.com Exploit, Mailing List, Third Party Advisory
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