xen: x86: PKRU and BND* leakage between vCPU-s (XSA-220)
Published Jul 5, 2017
8.0
HIGHCVSS 3.0
EPSS 1.35%
Description
The vCPU context-switch implementation in Xen through 4.8.x improperly interacts with the Memory Protection Extensions (MPX) and Protection Key (PKU) features, which makes it easier for guest OS users to defeat ASLR and other protection mechanisms, aka XSA-220.
Affected products
No data.
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:L/PR:N/UI:N/S:U/C:H/I:N/A:N
1 other source (Red Hat) ▾
CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:N/A:H
AV:N/AC:L/Au:N/C:P/I:N/A:N
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
2021–2026- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
Percentile over time
- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
Table of values (9 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 1.35% (0.01349) | 70.46th | v5 (v2026.06.15) |
| Sep 20, 2026 | 1.35% (0.01349) | 70.22th | v5 (v2026.06.15) |
| Jul 20, 2024 | 0.31% (0.00312) | 70.41th | v3 (v2023.03.01) |
| Feb 8, 2024 | 0.31% (0.00312) | 69.31th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.31% (0.00312) | 65.36th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.02% (0.01018) | 40.69th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.02% (0.01018) | 19.50th | v2 (v2022.01.01) |
| Feb 3, 2022 | 1.25% (0.01247) | 30.57th | v5 (v2026.06.15) |
| Apr 14, 2021 | 1.25% (0.01247) | 0.00th | v1 |
References (10)
- http://www.debian.org/security/2017/dsa-3969 vendor-advisoryx_refsource_DEBIAN
- http://www.securityfocus.com/bid/99167 vdb-entryx_refsource_BID
- http://www.securitytracker.com/id/1038730 vdb-entryx_refsource_SECTRACK
- http://xenbits.xen.org/xsa/advisory-220.html
- https://access.redhat.com/security/cve/CVE-2017-10916 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1458874 Issue Tracking
- https://nvd.nist.gov/vuln/detail/CVE-2017-10916
- https://security.gentoo.org/glsa/201708-03 vendor-advisoryx_refsource_GENTOO
- https://www.cve.org/CVERecord?id=CVE-2017-10916
- https://xenbits.xen.org/xsa/advisory-220.html x_refsource_CONFIRMMailing ListMitigationVendor Advisory
| Link | Providers | Tags |
|---|---|---|
| http://www.debian.org/security/2017/dsa-3969 | vendor-advisoryx_refsource_DEBIAN | |
| http://www.securityfocus.com/bid/99167 | vdb-entryx_refsource_BID | |
| http://www.securitytracker.com/id/1038730 | vdb-entryx_refsource_SECTRACK | |
| http://xenbits.xen.org/xsa/advisory-220.html | ||
| https://access.redhat.com/security/cve/CVE-2017-10916 | Vendor Advisory | |
| https://bugzilla.redhat.com/show_bug.cgi?id=1458874 | Issue Tracking | |
| https://nvd.nist.gov/vuln/detail/CVE-2017-10916 | ||
| https://security.gentoo.org/glsa/201708-03 | vendor-advisoryx_refsource_GENTOO | |
| https://www.cve.org/CVERecord?id=CVE-2017-10916 | ||
| https://xenbits.xen.org/xsa/advisory-220.html | x_refsource_CONFIRMMailing ListMitigationVendor Advisory |
Change history (0)
No recorded changes yet.