CVE-2016-6522

Published: Mar 7, 2017Modified: May 13, 2026

5.5

Vector

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

Exploitability: 1.8 / Impact: 3.6

Source: NVD

Description

Integer 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.

Affected (1)

Products: Openbsd: Openbsd

Openbsd

1 product

Openbsd

Configuration A

1 vulnerable

Vulnerable Software	Affected Versions
Openbsd Openbsd	Version 5.9

Related CWEs

CWE-190

Integer Overflow or Wraparound

The product performs a calculation that can produce an integer overflow or wraparound when the logic assumes that the resulting value will always be larger than the original value. This occurs when an integer value is incremented to a value that is too large to store in the associated representation. When this occurs, the value may become a very small or negative number.

References (8)

http://ftp.openbsd.org/pub/OpenBSD/patches/5.9/common/023_uvmisavail.patch.sig

Source: cve@mitre.org

Patch

http://www.openwall.com/lists/oss-security/2016/08/02/12

Source: cve@mitre.org

ExploitMailing ListThird Party Advisory

http://www.openwall.com/lists/oss-security/2016/08/02/8

Source: cve@mitre.org

ExploitMailing ListThird Party Advisory

http://www.securityfocus.com/bid/92264

Source: cve@mitre.org

http://ftp.openbsd.org/pub/OpenBSD/patches/5.9/common/023_uvmisavail.patch.sig

Source: af854a3a-2127-422b-91ae-364da2661108

Patch

http://www.openwall.com/lists/oss-security/2016/08/02/12

Source: af854a3a-2127-422b-91ae-364da2661108

ExploitMailing ListThird Party Advisory

http://www.openwall.com/lists/oss-security/2016/08/02/8

Source: af854a3a-2127-422b-91ae-364da2661108

ExploitMailing ListThird Party Advisory

http://www.securityfocus.com/bid/92264

Source: af854a3a-2127-422b-91ae-364da2661108

Timeline

No history available yet.