01 Record
CVE-2016-6522
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
UnratedPUBLISHEDCNA: mitre
CNA base scoreUnratedNo CNA CVSS vector
02 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
03 Exploitation and scoring
- Exploitation
- Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.
- SSVC decision
- Not assessed by CISA
- EPSS probability
- 0.44% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Equal to or higher than the score of 38.4% of scored records. A rank, not a probability.
- NVD base score
- 5.5 (CVSS v3.x), scored by the NVD independently of the CNA.
- NVD CVSS vector
- CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- NVD analysis status
- Modified. NVD last modified this record on 2026-06-17.
- Red Hat severity
- No Red Hat rating. Red Hat rates the CVEs that affect its products.
Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.
04 Metadata
- Published
- 2017-03-07 16:00Z9 YR AGO
- Last updated
- 2024-08-06 01:29Z2 YR AGO
- Reserved
- 2016-08-02
- Assigning CNA
- mitre
- Record state
- PUBLISHED
- Severity
- Not rated by the issuing CNA
- CNA CVSS vector
- Not published by the issuing CNA
- Weaknesses
- CWE-190Integer Overflow or WraparoundBase
- Data version
- 5.1
- Document digest
- 9e33b4d2f3a3ff23fe84d2d910d6abd780e75b5feac1fda72fabd3e2b4e0aaf7
05 Affected products
VendorProductVersionsPlatforms
06 References
- www.openwall.com[oss-security] 20160802 CVE Request: Denial-of-Service / Unexploitable Memory Corruption in mmap() on OpenBSDhttp://www.openwall.com/lists/oss-security/2016/08/02/8
- ftp.openbsd.orghttp://ftp.openbsd.org/pub/OpenBSD/patches/5.9/common/023_uvmisavail.patch.sig
- www.openwall.com[oss-security] 20160802 Re: CVE Request: Denial-of-Service / Unexploitable Memory Corruption in mmap() on OpenBSDhttp://www.openwall.com/lists/oss-security/2016/08/02/12
- www.securityfocus.com92264http://www.securityfocus.com/bid/92264