xen: pin count / page reference race in grant table code (XSA-236)
Published Oct 30, 2017
9.1
CRITICALCVSS 3.0
EPSS 2.83%
Description
An issue was discovered in Xen through 4.9.x. Grant copying code made an implication that any grant pin would be accompanied by a suitable page reference. Other portions of code, however, did not match up with that assumption. When such a grant copy operation is being done on a grant of a dying domain, the assumption turns out wrong. A malicious guest administrator can cause hypervisor memory corruption, most likely resulting in host crash and a Denial of Service. Privilege escalation and information leaks cannot be ruled out.
Affected products
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:H/UI:N/S:C/C:H/I:H/A:H
1 other source (Red Hat) ▾
CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:C/C:N/I:N/A:H
AV:N/AC:L/Au:S/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 2, 2026.
Score over time
2021–2026- EPSS v1
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v1
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (15 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 2, 2026 | 2.83% (0.02830) | 86.13th | v5 (v2026.06.15) |
| Jun 15, 2026 | 2.81% (0.02806) | 84.60th | v5 (v2026.06.15) |
| Mar 17, 2025 | 1.42% (0.01420) | 79.25th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.24% (0.00236) | 62.63th | v3 (v2023.03.01) |
| Jun 25, 2024 | 0.24% (0.00236) | 61.97th | v3 (v2023.03.01) |
| Mar 23, 2023 | 0.24% (0.00236) | 59.97th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.28% (0.00282) | 63.57th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.03% (0.01034) | 41.69th | v2 (v2022.01.01) |
| Sep 10, 2022 | 1.03% (0.01034) | 39.91th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.03% (0.01034) | 37.91th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.03% (0.01034) | 20.32th | v2 (v2022.01.01) |
| Feb 3, 2022 | 1.69% (0.01688) | 34.65th | v1 |
| Jan 6, 2022 | 1.69% (0.01688) | 33.96th | v1 |
| Sep 1, 2021 | 1.69% (0.01688) | 74.00th | v1 |
| Apr 14, 2021 | 1.69% (0.01688) | 0.00th | v1 |
References (11)
- http://www.openwall.com/lists/oss-security/2017/10/24/3 mailing-listx_refsource_MLISTIssue TrackingMailing ListMitigationThird Party Advisory
- http://www.securityfocus.com/bid/101564 vdb-entryx_refsource_BIDIssue TrackingThird Party AdvisoryVDB Entry
- http://www.securitytracker.com/id/1039653 vdb-entryx_refsource_SECTRACKIssue TrackingThird Party AdvisoryVDB Entry
- http://xenbits.xen.org/xsa/advisory-236.html x_refsource_CONFIRMIssue TrackingPatchVendor Advisory
- https://access.redhat.com/security/cve/CVE-2017-15597 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1499815 Issue Tracking
- https://lists.debian.org/debian-lts-announce/2018/10/msg00009.html mailing-listx_refsource_MLIST
- https://nvd.nist.gov/vuln/detail/CVE-2017-15597
- https://support.citrix.com/article/CTX229057 x_refsource_CONFIRMIssue TrackingThird Party Advisory
- https://www.cve.org/CVERecord?id=CVE-2017-15597
- https://www.debian.org/security/2017/dsa-4050 vendor-advisoryx_refsource_DEBIAN
| Link | Providers | Tags |
|---|---|---|
| http://www.openwall.com/lists/oss-security/2017/10/24/3 | mailing-listx_refsource_MLISTIssue TrackingMailing ListMitigationThird Party Advisory | |
| http://www.securityfocus.com/bid/101564 | vdb-entryx_refsource_BIDIssue TrackingThird Party AdvisoryVDB Entry | |
| http://www.securitytracker.com/id/1039653 | vdb-entryx_refsource_SECTRACKIssue TrackingThird Party AdvisoryVDB Entry | |
| http://xenbits.xen.org/xsa/advisory-236.html | x_refsource_CONFIRMIssue TrackingPatchVendor Advisory | |
| https://access.redhat.com/security/cve/CVE-2017-15597 | Vendor Advisory | |
| https://bugzilla.redhat.com/show_bug.cgi?id=1499815 | Issue Tracking | |
| https://lists.debian.org/debian-lts-announce/2018/10/msg00009.html | mailing-listx_refsource_MLIST | |
| https://nvd.nist.gov/vuln/detail/CVE-2017-15597 | ||
| https://support.citrix.com/article/CTX229057 | x_refsource_CONFIRMIssue TrackingThird Party Advisory | |
| https://www.cve.org/CVERecord?id=CVE-2017-15597 | ||
| https://www.debian.org/security/2017/dsa-4050 | vendor-advisoryx_refsource_DEBIAN |
Change history (0)
No recorded changes yet.