MEDIUM
xen: page type reference leak on x86 (XSA-242)
Published Oct 18, 2017
6.8
MEDIUMCVSS 3.0
EPSS 0.39%
Description
An issue was discovered in Xen through 4.9.x allowing x86 PV guest OS users to cause a denial of service (memory leak) because reference counts are mishandled.
Affected products
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
6.5 MEDIUM NVD
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H
Attack Vector Local
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Changed
Confidentiality Impact None
Integrity Impact None
Availability Impact High
1 other source (Red Hat) ▾
6.8 MEDIUM Red Hat
CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:C/C:N/I:N/A:H
Attack Vector Network
Attack Complexity Low
Privileges Required High
User Interaction None
Scope Changed
Confidentiality Impact None
Integrity Impact None
Availability Impact High
4.9 MEDIUM NVD
AV:L/AC:L/Au:N/C:N/I:N/A:C
Access Vector Local
Access Complexity Low
Authentication None
Confidentiality Impact None
Integrity Impact None
Availability Impact Complete
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
0.39% 0.00391
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
EPSS probability 0.00391
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 (14 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 0.39% (0.00391) | 30.82th | v5 (v2026.06.15) |
| Jun 15, 2026 | 0.39% (0.00391) | 30.68th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.07% (0.00073) | 19.59th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.06% (0.00062) | 28.60th | v3 (v2023.03.01) |
| Jun 13, 2024 | 0.06% (0.00062) | 26.61th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.06% (0.00062) | 24.59th | 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 | 2.06% (0.02061) | 50.21th | v1 |
| Jan 6, 2022 | 2.06% (0.02061) | 49.70th | v1 |
| Sep 1, 2021 | 2.06% (0.02061) | 76.87th | v1 |
| Apr 14, 2021 | 2.06% (0.02061) | 0.00th | v1 |
Weaknesses (1)
References (12)
- http://www.securitytracker.com/id/1039568 vdb-entryx_refsource_SECTRACKThird Party AdvisoryVDB Entry
- http://xenbits.xen.org/xsa/advisory-242.html
- https://access.redhat.com/security/cve/CVE-2017-15593 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1499822 Issue Tracking
- https://lists.debian.org/debian-lts-announce/2017/11/msg00027.html mailing-listx_refsource_MLIST
- https://lists.debian.org/debian-lts-announce/2018/10/msg00021.html mailing-listx_refsource_MLIST
- https://nvd.nist.gov/vuln/detail/CVE-2017-15593
- https://security.gentoo.org/glsa/201801-14 vendor-advisoryx_refsource_GENTOO
- https://support.citrix.com/article/CTX228867 x_refsource_CONFIRM
- https://www.cve.org/CVERecord?id=CVE-2017-15593
- https://www.debian.org/security/2017/dsa-4050 vendor-advisoryx_refsource_DEBIAN
- https://xenbits.xen.org/xsa/advisory-242.html x_refsource_CONFIRMMitigationPatchVendor Advisory
| Link | Providers | Tags |
|---|---|---|
| http://www.securitytracker.com/id/1039568 | vdb-entryx_refsource_SECTRACKThird Party AdvisoryVDB Entry | |
| http://xenbits.xen.org/xsa/advisory-242.html | ||
| https://access.redhat.com/security/cve/CVE-2017-15593 | Vendor Advisory | |
| https://bugzilla.redhat.com/show_bug.cgi?id=1499822 | Issue Tracking | |
| https://lists.debian.org/debian-lts-announce/2017/11/msg00027.html | mailing-listx_refsource_MLIST | |
| https://lists.debian.org/debian-lts-announce/2018/10/msg00021.html | mailing-listx_refsource_MLIST | |
| https://nvd.nist.gov/vuln/detail/CVE-2017-15593 | ||
| https://security.gentoo.org/glsa/201801-14 | vendor-advisoryx_refsource_GENTOO | |
| https://support.citrix.com/article/CTX228867 | x_refsource_CONFIRM | |
| https://www.cve.org/CVERecord?id=CVE-2017-15593 | ||
| https://www.debian.org/security/2017/dsa-4050 | vendor-advisoryx_refsource_DEBIAN | |
| https://xenbits.xen.org/xsa/advisory-242.html | x_refsource_CONFIRMMitigationPatchVendor Advisory |
Change history (0)
No recorded changes yet.
Sources
CVE.org / MITRE
Status PUBLISHED
Assigner mitre
Published Oct 18, 2017
Updated Aug 5, 2024
Reserved Oct 18, 2017
Link CVE-2017-15593
CISA Vulnrichment
Updated n/a