CVE-2016-6522 — MEDIUM (5.5)

Vulnerability 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.

CVSS Score

5.5

MEDIUM

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

NONE

Integrity

NONE

Availability

HIGH

Affected Products

Vendor	Product	Versions
Openbsd	Openbsd	5.9

Related Weaknesses (CWE)

CWE-190

References

http://ftp.openbsd.org/pub/OpenBSD/patches/5.9/common/023_uvmisavail.patch.sigPatch
http://www.openwall.com/lists/oss-security/2016/08/02/12ExploitMailing ListThird Party Advisory
http://www.openwall.com/lists/oss-security/2016/08/02/8ExploitMailing ListThird Party Advisory
http://www.securityfocus.com/bid/92264
http://ftp.openbsd.org/pub/OpenBSD/patches/5.9/common/023_uvmisavail.patch.sigPatch
http://www.openwall.com/lists/oss-security/2016/08/02/12ExploitMailing ListThird Party Advisory
http://www.openwall.com/lists/oss-security/2016/08/02/8ExploitMailing ListThird Party Advisory
http://www.securityfocus.com/bid/92264

FAQ

What is CVE-2016-6522?

CVE-2016-6522 is a vulnerability with a CVSS score of 5.5 (MEDIUM). 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 ...

How severe is CVE-2016-6522?

CVE-2016-6522 has been rated MEDIUM with a CVSS base score of 5.5/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2016-6522?

Check the references section above for vendor advisories and patch information. Affected products include: Openbsd Openbsd.