xen: PV superpage functionality missing sanity checks
Published Jan 22, 2016
8.5
HIGHCVSS 3.0
EPSS 1.15%
Description
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.
Affected products
No data.
- 3.4.0
- 3.4.1
- 4.1.0
- 4.1.1
- 4.1.2
- 4.1.3
- 4.1.4
- 4.1.5
- 4.1.6
- 4.1.6.1
- 4.2.0
- 4.2.1
- 4.2.2
- 4.2.3
- 4.2.4
- 4.2.5
- 4.3.0
- 4.3.1
- 4.3.2
- 4.3.3
- 4.3.4
- 4.4.0
- 4.4.0
- 4.4.1
- 4.4.2
- 4.4.3
- 4.5.0
- 4.5.1
- 4.5.2
- 4.6.0
No data.
Red Hat Enterprise Linux 5
xen
Not affected
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 5 | xen | Not affected | n/a |
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H
AV:L/AC:M/Au:N/C:C/I:C/A:C
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (10 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 1.15% (0.01153) | 65.81th | v5 (v2026.06.15) |
| Jun 15, 2026 | 1.15% (0.01153) | 62.72th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.30% (0.00300) | 51.19th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.16% (0.00163) | 54.26th | v3 (v2023.03.01) |
| Jun 22, 2024 | 0.16% (0.00163) | 53.12th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.16% (0.00163) | 51.12th | v3 (v2023.03.01) |
| Mar 6, 2023 | 0.89% (0.00890) | 30.33th | v2 (v2022.01.01) |
| Sep 10, 2022 | 0.89% (0.00890) | 28.64th | v2 (v2022.01.01) |
| Apr 1, 2022 | 0.89% (0.00890) | 26.62th | v2 (v2022.01.01) |
| Feb 4, 2022 | 0.89% (0.00890) | 12.04th | v2 (v2022.01.01) |
References (7)
- http://www.debian.org/security/2016/dsa-3519 vendor-advisoryx_refsource_DEBIAN
- http://www.securitytracker.com/id/1034744 vdb-entryx_refsource_SECTRACK
- http://xenbits.xen.org/xsa/advisory-167.html x_refsource_CONFIRMVendor Advisory
- https://access.redhat.com/security/cve/CVE-2016-1570 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1296539 Issue Tracking
- https://nvd.nist.gov/vuln/detail/CVE-2016-1570
- https://www.cve.org/CVERecord?id=CVE-2016-1570
| Link | Providers | Tags |
|---|---|---|
| http://www.debian.org/security/2016/dsa-3519 | vendor-advisoryx_refsource_DEBIAN | |
| http://www.securitytracker.com/id/1034744 | vdb-entryx_refsource_SECTRACK | |
| http://xenbits.xen.org/xsa/advisory-167.html | x_refsource_CONFIRMVendor Advisory | |
| https://access.redhat.com/security/cve/CVE-2016-1570 | Vendor Advisory | |
| https://bugzilla.redhat.com/show_bug.cgi?id=1296539 | Issue Tracking | |
| https://nvd.nist.gov/vuln/detail/CVE-2016-1570 | ||
| https://www.cve.org/CVERecord?id=CVE-2016-1570 |
Change history (0)
No recorded changes yet.