xen: x86 vHPET interrupt injection errors (XSA-261)
Published May 10, 2018
8.8
HIGHCVSS 3.0
EPSS 0.47%
Description
An issue was discovered in Xen through 4.10.x allowing x86 HVM guest OS users to cause a denial of service (unexpectedly high interrupt number, array overrun, and hypervisor crash) or possibly gain hypervisor privileges by setting up an HPET timer to deliver interrupts in IO-APIC mode, aka vHPET interrupt injection.
Affected products
No data.
Configuration 2
- 7.0
- 8.0
- 9.0
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:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
1 other source (Red Hat) ▾
CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H
AV:L/AC:L/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
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 1, 2026 | 0.47% (0.00475) | 38.78th | v5 (v2026.06.15) |
| Jun 15, 2026 | 0.49% (0.00489) | 37.99th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.07% (0.00071) | 19.21th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.06% (0.00062) | 28.60th | v3 (v2023.03.01) |
| Jun 14, 2024 | 0.06% (0.00062) | 26.68th | v3 (v2023.03.01) |
| May 4, 2023 | 0.06% (0.00062) | 24.61th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.04% (0.00045) | 12.06th | 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 |
No CWE recorded.
References (12)
- http://openwall.com/lists/oss-security/2018/05/08/2 x_refsource_CONFIRMMailing ListThird Party Advisory
- http://www.securityfocus.com/bid/104150 vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry
- http://xenbits.xen.org/xsa/advisory-261.html
- https://access.redhat.com/security/cve/CVE-2018-10982 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1571880 Issue Tracking
- https://lists.debian.org/debian-lts-announce/2018/05/msg00015.html mailing-listx_refsource_MLISTIssue TrackingThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2018/10/msg00009.html mailing-listx_refsource_MLISTIssue TrackingThird Party Advisory
- https://nvd.nist.gov/vuln/detail/CVE-2018-10982
- https://security.gentoo.org/glsa/201810-06 vendor-advisoryx_refsource_GENTOOThird Party Advisory
- https://www.cve.org/CVERecord?id=CVE-2018-10982
- https://www.debian.org/security/2018/dsa-4201 vendor-advisoryx_refsource_DEBIANThird Party Advisory
- https://xenbits.xen.org/xsa/advisory-261.html x_refsource_CONFIRMMitigationPatchVendor Advisory
Change history (0)
No recorded changes yet.