xen: guest use of HLE constructs may lock up host
Published Dec 8, 2018
6.5
MEDIUMCVSS 3.0
EPSS 0.45%
Description
An issue was discovered in Xen through 4.11.x on Intel x86 platforms allowing guest OS users to cause a denial of service (host OS hang) because Xen does not work around Intel's mishandling of certain HLE transactions associated with the KACQUIRE instruction prefix.
Affected products
No data.
Configuration 2
- 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:N/I:N/A:H
1 other source (Red Hat) ▾
CVSS:3.0/AV:A/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
AV:L/AC:L/Au:N/C:N/I:N/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 | 0.45% (0.00454) | 37.08th | v5 (v2026.06.15) |
| Jun 15, 2026 | 0.45% (0.00454) | 35.80th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.08% (0.00076) | 20.36th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.06% (0.00062) | 28.60th | v3 (v2023.03.01) |
| Jun 26, 2024 | 0.06% (0.00062) | 26.85th | v3 (v2023.03.01) |
| Dec 1, 2023 | 0.06% (0.00062) | 24.84th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.04% (0.00045) | 12.26th | 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 | 1.81% (0.01806) | 35.10th | v1 |
| Jan 6, 2022 | 1.81% (0.01806) | 34.40th | v1 |
| Sep 1, 2021 | 1.81% (0.01806) | 74.37th | v1 |
| Apr 14, 2021 | 1.81% (0.01806) | 0.00th | v1 |
References (10)
- http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00057.html vendor-advisoryx_refsource_SUSE
- http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00072.html vendor-advisoryx_refsource_SUSE
- http://www.securityfocus.com/bid/106182 vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry
- https://access.redhat.com/security/cve/CVE-2018-19967 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1660493 Issue Tracking
- https://nvd.nist.gov/vuln/detail/CVE-2018-19967
- https://support.citrix.com/article/CTX239432 x_refsource_CONFIRMThird Party Advisory
- https://www.cve.org/CVERecord?id=CVE-2018-19967
- https://www.debian.org/security/2019/dsa-4369 vendor-advisoryx_refsource_DEBIANThird Party Advisory
- https://xenbits.xen.org/xsa/advisory-282.html x_refsource_MISCPatchVendor Advisory
| Link | Providers | Tags |
|---|---|---|
| http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00057.html | vendor-advisoryx_refsource_SUSE | |
| http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00072.html | vendor-advisoryx_refsource_SUSE | |
| http://www.securityfocus.com/bid/106182 | vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry | |
| https://access.redhat.com/security/cve/CVE-2018-19967 | Vendor Advisory | |
| https://bugzilla.redhat.com/show_bug.cgi?id=1660493 | Issue Tracking | |
| https://nvd.nist.gov/vuln/detail/CVE-2018-19967 | ||
| https://support.citrix.com/article/CTX239432 | x_refsource_CONFIRMThird Party Advisory | |
| https://www.cve.org/CVERecord?id=CVE-2018-19967 | ||
| https://www.debian.org/security/2019/dsa-4369 | vendor-advisoryx_refsource_DEBIANThird Party Advisory | |
| https://xenbits.xen.org/xsa/advisory-282.html | x_refsource_MISCPatchVendor Advisory |
Change history (0)
No recorded changes yet.