HIGH
xen: insufficient TLB flushing / improper large page mappings with AMD IOMMUs
Published Dec 8, 2018
8.1
HIGHCVSS 3.0
EPSS 0.41%
Description
An issue was discovered in Xen through 4.11.x on AMD x86 platforms, possibly allowing guest OS users to gain host OS privileges because small IOMMU mappings are unsafely combined into larger ones.
Affected products
No data.
No data.
Red Hat Enterprise Linux 5
kernel-xen
Will not fix
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 5 | kernel-xen | Will not fix | 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.
7.8 HIGH NVD
CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H
Attack Vector Local
Attack Complexity High
Privileges Required Low
User Interaction None
Scope Changed
Confidentiality Impact High
Integrity Impact High
Availability Impact High
1 other source (Red Hat) ▾
8.1 HIGH Red Hat
CVSS:3.0/AV:L/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H
Attack Vector Local
Attack Complexity High
Privileges Required None
User Interaction None
Scope Changed
Confidentiality Impact High
Integrity Impact High
Availability Impact High
6.9 MEDIUM NVD
AV:L/AC:M/Au:N/C:C/I:C/A:C
Access Vector Local
Access Complexity Medium
Authentication None
Confidentiality Impact Complete
Integrity Impact Complete
Availability Impact Complete
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
0.41% 0.00409
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
EPSS probability 0.00409
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 | 0.41% (0.00409) | 32.71th | v5 (v2026.06.15) |
| Jun 15, 2026 | 0.41% (0.00409) | 32.33th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.10% (0.00105) | 26.11th | 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) | 12.06th | 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 | 1.66% (0.01659) | 34.20th | v1 |
| Jan 6, 2022 | 1.66% (0.01659) | 33.50th | v1 |
| Sep 1, 2021 | 1.66% (0.01659) | 73.96th | v1 |
| Apr 14, 2021 | 1.66% (0.01659) | 0.00th | v1 |
Weaknesses (2)
References (11)
- 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-2018-19962 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1647573 Issue Tracking
- https://lists.debian.org/debian-lts-announce/2019/10/msg00008.html mailing-listx_refsource_MLIST
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UXC6BME7SXJI2ZIATNXCAH7RGPI4UKTT/ vendor-advisoryx_refsource_FEDORA
- https://nvd.nist.gov/vuln/detail/CVE-2018-19962
- https://support.citrix.com/article/CTX239432 x_refsource_CONFIRMThird Party Advisory
- https://www.cve.org/CVERecord?id=CVE-2018-19962
- https://www.debian.org/security/2019/dsa-4369 vendor-advisoryx_refsource_DEBIANThird Party Advisory
- https://xenbits.xen.org/xsa/advisory-275.html x_refsource_MISCPatchVendor Advisory
| Link | Providers | Tags |
|---|---|---|
| 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-2018-19962 | Vendor Advisory | |
| https://bugzilla.redhat.com/show_bug.cgi?id=1647573 | Issue Tracking | |
| https://lists.debian.org/debian-lts-announce/2019/10/msg00008.html | mailing-listx_refsource_MLIST | |
| https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UXC6BME7SXJI2ZIATNXCAH7RGPI4UKTT/ | vendor-advisoryx_refsource_FEDORA | |
| https://nvd.nist.gov/vuln/detail/CVE-2018-19962 | ||
| https://support.citrix.com/article/CTX239432 | x_refsource_CONFIRMThird Party Advisory | |
| https://www.cve.org/CVERecord?id=CVE-2018-19962 | ||
| https://www.debian.org/security/2019/dsa-4369 | vendor-advisoryx_refsource_DEBIANThird Party Advisory | |
| https://xenbits.xen.org/xsa/advisory-275.html | x_refsource_MISCPatchVendor Advisory |
Change history (0)
No recorded changes yet.
Sources
CVE.org / MITRE
Status PUBLISHED
Assigner mitre
Published Dec 8, 2018
Updated Aug 5, 2024
Reserved Dec 7, 2018
Link CVE-2018-19962
CISA Vulnrichment
Updated n/a