Home/CVE/The PV superpage functionality in arch/x86/mm.c in Xen 3.4.0, 3.4.1, and 4.1.x through 4.6.x allows local PV guests to o
CVE

CVE-2016-1570

The PV superpage functionality in arch/x86/mm.c in Xen 3.4.0, 3.4.1, and 4.1.x through 4.6.x allows local PV guests to o

The PV superpage functionality in arch/x86/mm.c in Xen 3.4.0, 3.4.1, and 4.1.x through 4.6.x allows local PV guests to obtain sensitive information, cause a denial of service, gain privileges, or have unspecified other impact via a crafted page identifier (MFN) to the (1) MMUEXT_MARK_SUPER or (2) MMUEXT_UNMARK_SUPER sub-op in the HYPERVISOR_mmuext_op hypercall or (3) unknown vectors related to page table updates.

HIGH · CVSS 8.5 EPSS 0.00204
Schedule remediation
  • CVSS base score ≥ 7.0
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-20Improper Input Validation
▤

Affected Products & Versions

1
xenall versions
▣

Scoring & Timeline

8.5
HIGH · CVSS v3.0 · cve@mitre.org
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD22 Jan 2016 · 03:59 PM
CVSS VectorCVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H
⚑

Vendor Advisories

6
suse-csafopenSUSE-SU-2024:10196-1
suse-csafSUSE-SU-2016:1745-1
suse-csafSUSE-SU-2016:1318-1
suse-csafSUSE-SU-2016:1154-1
suse-csafSUSE-SU-2016:0955-1
🔗

References & Sources

3
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
http://www.debian.org/security/2016/dsa-3519
http://www.securitytracker.com/id/1034744
http://xenbits.xen.org/xsa/advisory-167.htmlVendor Advisory
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