CVE-2016-3961
Xen and the Linux kernel through 4.5.x do not properly suppress hugetlbfs support in x86 PV guests, which allows local PV guest OS users to cause a denial of service (guest OS crash) by attempting to
02 Description
Xen and the Linux kernel through 4.5.x do not properly suppress hugetlbfs support in x86 PV guests, which allows local PV guest OS users to cause a denial of service (guest OS crash) by attempting to
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
- 0.51% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Equal to or higher than the score of 43.2% 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
- Moderate. Red Hat's rating for its own products, not a CVSS rating.
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
- 2016-04-15 14:00Z10 YR AGO
- Last updated
- 2024-08-06 00:10Z2 YR AGO
- Reserved
- 2016-04-05
- Assigning CNA
- mitre
- Record state
- PUBLISHED
- Severity
- Not rated by the issuing CNA
- CNA CVSS vector
- Not published by the issuing CNA
- Weaknesses
- CWE-20Improper Input ValidationClass
- Data version
- 5.1
- Document digest
- 5cdf8fb45db3f58e7e7726172edde0e0b0d72fe46f0ae9e760960e95fb0aff0f
05 Affected products
06 References
- xenbits.xen.orghttp://xenbits.xen.org/xsa/xsa174.patch
- www.ubuntu.comUSN-3006-1http://www.ubuntu.com/usn/USN-3006-1
- www.ubuntu.comUSN-3004-1http://www.ubuntu.com/usn/USN-3004-1
- www.ubuntu.comUSN-3001-1http://www.ubuntu.com/usn/USN-3001-1
- xenbits.xen.orghttp://xenbits.xen.org/xsa/advisory-174.html
- www.ubuntu.comUSN-3005-1http://www.ubuntu.com/usn/USN-3005-1
- www.securitytracker.com1035569http://www.securitytracker.com/id/1035569
- www.ubuntu.comUSN-3049-1http://www.ubuntu.com/usn/USN-3049-1
- www.debian.orgDSA-3607http://www.debian.org/security/2016/dsa-3607
- www.ubuntu.comUSN-3002-1http://www.ubuntu.com/usn/USN-3002-1
- www.ubuntu.comUSN-3050-1http://www.ubuntu.com/usn/USN-3050-1
- www.ubuntu.comUSN-3007-1http://www.ubuntu.com/usn/USN-3007-1
- www.ubuntu.comUSN-3003-1http://www.ubuntu.com/usn/USN-3003-1
- www.securityfocus.com86068http://www.securityfocus.com/bid/86068
07 Fixed in
Debian 12
- linux Fixed in 4.5.2-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 13
- linux Fixed in 4.5.2-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 14
- linux Fixed in 4.5.2-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 14.04 LTS
- linux Fixed in 3.13.0-101.148
- linux-lts-vivid Fixed in 3.19.0-61.69~14.04.1
- linux-lts-wily Fixed in 4.2.0-38.45~14.04.1
- linux-lts-xenial Fixed in 4.4.0-24.43~14.04.1
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 16.04 LTS
- linux Fixed in 4.4.0-24.43
- linux-raspi2 Fixed in 4.4.0-1012.16
- linux-snapdragon Fixed in 4.4.0-1015.18
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 18.04 LTS
- linux-azure No fix yet
- linux-gcp No fix yet
- linux-hwe No fix yet
- linux-hwe-edge No fix yet
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 20.04 LTS
- linux-azure-fde No fix yet
- linux-gke No fix yet
- linux-gkeop No fix yet
- linux-raspi2 No fix yet
- linux-riscv No fix yet
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 22.04 LTS
- linux-intel-iot-realtime No fix yet
- linux-realtime No fix yet
- linux-riscv No fix yet
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 24.04 LTS
- linux-azure-6.11 No fix yet
- linux-gcp-6.11 No fix yet
- linux-hwe-6.11 No fix yet
- linux-lowlatency-hwe-6.11 No fix yet
- linux-raspi-realtime No fix yet
- linux-realtime No fix yet
- linux-riscv No fix yet
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu Pro 20.04 LTS
- linux-azure-fde-5.15 No fix yet
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
A release or ecosystem missing from this list has no record here. It may be unaffected or not covered by the source. Source notices and licences.