MEDIUM
xen: xsa294: Insufficient TLB flushing when using PCID
Published Oct 8, 2019
6.5
MEDIUMCVSS 3.1
EPSS 0.35%
Description
An issue was discovered in Xen through 4.11.x allowing x86 PV guest OS users to cause a denial of service because of an incompatibility between Process Context Identifiers (PCID) and shadow-pagetable switching.
Affected products
No data.
Configuration 2
OR
- 9.0
- 10.0
No data.
Red Hat Enterprise Linux 5
xen
Will not fix
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 5 | 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.
6.5 MEDIUM NVD
CVSS:3.1/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
6.5 MEDIUM Red Hat
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:H
Attack Vector Network
Attack Complexity High
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality Impact Low
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.
0.35% 0.00347
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 2, 2026.
EPSS probability 0.00347
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 2, 2026 | 0.35% (0.00347) | 25.94th | v5 (v2026.06.15) |
| Jun 15, 2026 | 0.35% (0.00347) | 26.34th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.14% (0.00144) | 31.97th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.05% (0.00052) | 22.38th | v3 (v2023.03.01) |
| Jun 10, 2024 | 0.04% (0.00045) | 14.07th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.04% (0.00045) | 12.06th | v3 (v2023.03.01) |
| Mar 6, 2023 | 0.95% (0.00950) | 32.28th | v2 (v2022.01.01) |
| Sep 10, 2022 | 0.95% (0.00950) | 30.63th | v2 (v2022.01.01) |
| Apr 1, 2022 | 0.95% (0.00950) | 28.61th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.67% (0.01669) | 53.27th | v2 (v2022.01.01) |
| Feb 3, 2022 | 6.60% (0.06599) | 83.03th | v1 |
| Jan 6, 2022 | 6.60% (0.06599) | 82.86th | v1 |
| Sep 1, 2021 | 1.55% (0.01550) | 73.01th | v1 |
| Apr 14, 2021 | 1.55% (0.01550) | 0.00th | v1 |
References (9)
- http://www.openwall.com/lists/oss-security/2019/10/25/7 mailing-listx_refsource_MLISTMailing List
- http://xenbits.xen.org/xsa/advisory-294.html x_refsource_CONFIRMPatchVendor Advisory
- https://access.redhat.com/security/cve/CVE-2019-17348 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1683956 Issue Tracking
- https://nvd.nist.gov/vuln/detail/CVE-2019-17348
- https://seclists.org/bugtraq/2020/Jan/21 mailing-listx_refsource_BUGTRAQMailing ListThird Party Advisory
- https://www.cve.org/CVERecord?id=CVE-2019-17348
- https://www.debian.org/security/2020/dsa-4602 vendor-advisoryx_refsource_DEBIANThird Party Advisory
- https://xenbits.xen.org/xsa/advisory-294.html x_refsource_MISCMitigationPatchVendor Advisory
| Link | Providers | Tags |
|---|---|---|
| http://www.openwall.com/lists/oss-security/2019/10/25/7 | mailing-listx_refsource_MLISTMailing List | |
| http://xenbits.xen.org/xsa/advisory-294.html | x_refsource_CONFIRMPatchVendor Advisory | |
| https://access.redhat.com/security/cve/CVE-2019-17348 | Vendor Advisory | |
| https://bugzilla.redhat.com/show_bug.cgi?id=1683956 | Issue Tracking | |
| https://nvd.nist.gov/vuln/detail/CVE-2019-17348 | ||
| https://seclists.org/bugtraq/2020/Jan/21 | mailing-listx_refsource_BUGTRAQMailing ListThird Party Advisory | |
| https://www.cve.org/CVERecord?id=CVE-2019-17348 | ||
| https://www.debian.org/security/2020/dsa-4602 | vendor-advisoryx_refsource_DEBIANThird Party Advisory | |
| https://xenbits.xen.org/xsa/advisory-294.html | x_refsource_MISCMitigationPatchVendor Advisory |
Change history (0)
No recorded changes yet.
Sources
CVE.org / MITRE
Status PUBLISHED
Assigner mitre
Published Oct 8, 2019
Updated Aug 5, 2024
Reserved Oct 7, 2019
Link CVE-2019-17348
CISA Vulnrichment
Updated n/a