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CVE-2019-17346

An issue was discovered in Xen through 4.11.x allowing x86 PV guest OS users to cause a denial of...

8.8 HighFix available

An issue was discovered in Xen through 4.11.x allowing x86 PV guest OS users to cause a denial of service or gain privileges because of an incompatibility between Process Context Identifiers (PCID) and TLB flushes.

Attack profile

How easy it is to exploit

Attack vector
Local
Complexity
Low
Privileges needed
Low
User interaction
None

What an attacker can affect

Confidentiality
High
Integrity
High
Availability
High

Exploit likelihood

0.35%Down 1.2 points since Apr 14, 2021
90%50%10%1%

What each source reports

NVD Score used 8.8

An issue was discovered in Xen through 4.11.x allowing x86 PV guest OS users to cause a denial of service or gain privileges because of an incompatibility between Process Context Identifiers (PCID) and TLB flushes.

Record
CVE-2019-17346
CVSS 3.1
8.8 HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
CVSS 2.0
7.2 HighAV:L/AC:L/Au:N/C:C/I:C/A:C
Weakness
CWE-20
Updated
2026-11-02
CVE List No score

An issue was discovered in Xen through 4.11.x allowing x86 PV guest OS users to cause a denial of service or gain privileges because of an incompatibility between Process Context Identifiers (PCID) and TLB flushes.

Record
CVE-2019-17346
Updated
2026-11-02
EUVDEUVD-2019-7757 No score

An issue was discovered in Xen through 4.11.x allowing x86 PV guest OS users to cause a denial of service or gain privileges because of an incompatibility between Process Context Identifiers (PCID) and TLB flushes.

Record
EUVD-2019-7757
Updated
2026-11-03
GitHub AdvisoriesGHSA-j897-36j5-vg2q 8.8

An issue was discovered in Xen through 4.11.x allowing x86 PV guest OS users to cause a denial of...

An issue was discovered in Xen through 4.11.x allowing x86 PV guest OS users to cause a denial of service or gain privileges because of an incompatibility between Process Context Identifiers (PCID) and TLB flushes.

Record
GHSA-j897-36j5-vg2q
CVSS 3.1
8.8 HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Weakness
CWE-20
Updated
2026-11-02
OSVALPINE-CVE-2019-17346 8.8

An issue was discovered in Xen through 4.11.x allowing x86 PV guest OS users to cause a denial of service or gain privileges because of an incompatibility between Process Context Identifiers (PCID) and TLB flushes.

Record
ALPINE-CVE-2019-17346
CVSS 3.1
8.8 HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Updated
2026-11-02
OSV 8.8

An issue was discovered in Xen through 4.11.x allowing x86 PV guest OS users to cause a denial of service or gain privileges because of an incompatibility between Process Context Identifiers (PCID) and TLB flushes.

Record
CVE-2019-17346
CVSS 3.1
8.8 HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Updated
2026-11-02
Show 6 moreShow less
OSVDEBIAN-CVE-2019-17346 8.8

An issue was discovered in Xen through 4.11.x allowing x86 PV guest OS users to cause a denial of service or gain privileges because of an incompatibility between Process Context Identifiers (PCID) and TLB flushes.

Record
DEBIAN-CVE-2019-17346
CVSS 3.1
8.8 HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Updated
2026-11-02
OSVSUSE-RU-2019:2767-1 No score

Recommended update for xen

This update for xen to version 4.10.4 fixes the following issues:

  • Fixed an issue where libxenlight could not restore domain vsa6535522 on live migration (bsc#1133818).
  • Fixed an HPS bug which did not allow to install Windows Server 2016 with 2 CPUs setting or above (bsc#1137717).
  • Fixed an issue where libxenlight could not create new domain (bsc#1131811).
  • Fixed an issue where Xen could not pre-allocate 1 shadow page (bsc#1145240).
  • Fixed an issue where attached pci devices were lost after reboot (bsc#1129642).
  • Fixed a segmentation fault in Libvrtd during live migration to a VM (bsc#1145774).
  • Xenpvnetboot is now ported correctly to Python 3 (bsc#1138563).
Record
SUSE-RU-2019:2767-1
Updated
2026-11-02
OSVSUSE-SU-2019:14199-1 No score

Security update for xen

This update for xen fixes the following issues:

  • CVE-2019-15890: Fixed a use-after-free in SLiRP networking implementation of QEMU emulator which could have led to Denial of Service (bsc#1149813).
  • CVE-2019-12068: Fixed an issue in lsi which could lead to an infinite loop and denial of service (bsc#1146874).
  • CVE-2019-14378: Fixed a heap buffer overflow in SLiRp networking implementation of QEMU emulator which could have led to execution of arbitrary code with privileges of the QEMU process (bsc#1143797).
  • CVE-2019-12067: Fixed a null pointer dereference which could have led to denial of service (bsc#1145652).
  • CVE-2019-12155: Fixed a null pointer dereference in QXL VGA card emulator of QEMU which could have led to denial of service (bsc#1135905).
Record
SUSE-SU-2019:14199-1
Updated
2026-11-02
OSVSUSE-SU-2019:2753-1 No score

Security update for xen

This update for xen to version 4.11.2 fixes the following issues:

Security issues fixed:

  • CVE-2019-15890: Fixed a use-after-free in SLiRP networking implementation of QEMU emulator which could have led to Denial of Service (bsc#1149813).
  • CVE-2019-12068: Fixed an issue in lsi which could lead to an infinite loop and denial of service (bsc#1146874).
  • CVE-2019-14378: Fixed a heap buffer overflow in SLiRp networking implementation of QEMU emulator which could have led to execution of arbitrary code with privileges of the QEMU process (bsc#1143797).

Other issues fixed:

  • Fixed an HPS bug which did not allow to install Windows Server 2016 with 2 CPUs setting or above (bsc#1137717).
  • Fixed a segmentation fault in Libvrtd during live migration to a VM (bsc#1145774).
  • Fixed an issue where libxenlight could not create new domain (bsc#1131811).
  • Fixed an issue where attached pci devices were lost after reboot (bsc#1129642).
  • Fixed an issue where Xen could not pre-allocate 1 shadow page (bsc#1145240).
Record
SUSE-SU-2019:2753-1
Updated
2026-11-02
OSVSUSE-SU-2019:2769-1 No score

Security update for xen

This update for xen fixes the following issues:

Security issues fixed:

  • CVE-2019-15890: Fixed a use-after-free in SLiRP networking implementation of QEMU emulator which could have led to Denial of Service (bsc#1149813).
  • CVE-2019-12068: Fixed an issue in lsi which could lead to an infinite loop and denial of service (bsc#1146874).
  • CVE-2019-14378: Fixed a heap buffer overflow in SLiRp networking implementation of QEMU emulator which could have led to execution of arbitrary code with privileges of the QEMU process (bsc#1143797).

Other issue fixed:

  • Fixed an issue where libxenlight could not restore domain vsa6535522 on live migration (bsc#1133818).
Record
SUSE-SU-2019:2769-1
Updated
2026-11-02
OSVSUSE-SU-2019:2783-1 No score

Security update for xen

This update for xen fixes the following issues:

  • CVE-2019-15890: Fixed a use-after-free in SLiRP networking implementation of QEMU emulator which could have led to Denial of Service (bsc#1149813).
  • CVE-2019-12068: Fixed an issue in lsi which could lead to an infinite loop and denial of service (bsc#1146874).
  • CVE-2019-14378: Fixed a heap buffer overflow in SLiRp networking implementation of QEMU emulator which could have led to execution of arbitrary code with privileges of the QEMU process (bsc#1143797).
Record
SUSE-SU-2019:2783-1
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
xen
Alpine:v3.9
 before 4.11.2-r0
4.11.2-r0
xen
Debian:12
 before 4.11.1+92-g6c33308a8d-1
4.11.1+92-g6c33308a8d-1
xen
Debian:13
 before 4.11.1+92-g6c33308a8d-1
4.11.1+92-g6c33308a8d-1
xen
Debian:14
 before 4.11.1+92-g6c33308a8d-1
4.11.1+92-g6c33308a8d-1
xen
SUSE:Linux Enterprise Module for Basesystem 15
From an advisory covering 14 CVEs
 before 4.10.4_04-3.22.1
4.10.4_04-3.22.1
xen
SUSE:Linux Enterprise Module for Server Applications 15
From an advisory covering 14 CVEs
 before 4.10.4_04-3.22.1
4.10.4_04-3.22.1
xen
SUSE:Linux Enterprise Server 11 SP4-LTSS
From an advisory covering 13 CVEs
 before 4.4.4_40-61.49.1
4.4.4_40-61.49.1
xen
SUSE:Linux Enterprise Desktop 12 SP4
From an advisory covering 16 CVEs
 before 4.11.2_02-2.14.2
4.11.2_02-2.14.2
xen
SUSE:Linux Enterprise Software Development Kit 12 SP4
From an advisory covering 16 CVEs
 before 4.11.2_02-2.14.2
4.11.2_02-2.14.2
xen
SUSE:Linux Enterprise Server 12 SP4
From an advisory covering 16 CVEs
 before 4.11.2_02-2.14.2
4.11.2_02-2.14.2
Show 13 moreShow less
Affected packages
PackageAffectedFixed
xen
SUSE:Linux Enterprise Server for SAP Applications 12 SP4
From an advisory covering 16 CVEs
 before 4.11.2_02-2.14.2
4.11.2_02-2.14.2
xen
SUSE:HPE Helion OpenStack 8
From an advisory covering 16 CVEs
 before 4.9.4_04-3.56.2
4.9.4_04-3.56.2
xen
SUSE:OpenStack Cloud 8
From an advisory covering 16 CVEs
 before 4.9.4_04-3.56.2
4.9.4_04-3.56.2
xen
SUSE:OpenStack Cloud Crowbar 8
From an advisory covering 16 CVEs
 before 4.9.4_04-3.56.2
4.9.4_04-3.56.2
xen
SUSE:Linux Enterprise Server for SAP Applications 12 SP3
From an advisory covering 16 CVEs
 before 4.9.4_04-3.56.2
4.9.4_04-3.56.2
xen
SUSE:Linux Enterprise Server 12 SP3-LTSS
From an advisory covering 16 CVEs
 before 4.9.4_04-3.56.2
4.9.4_04-3.56.2
xen
SUSE:Linux Enterprise Server 12 SP3-BCL
From an advisory covering 16 CVEs
 before 4.9.4_04-3.56.2
4.9.4_04-3.56.2
xen
SUSE:Enterprise Storage 5
From an advisory covering 16 CVEs
 before 4.9.4_04-3.56.2
4.9.4_04-3.56.2
xen
SUSE:OpenStack Cloud 7
From an advisory covering 11 CVEs
 before 4.7.6_06-43.54.2
4.7.6_06-43.54.2
xen
SUSE:Linux Enterprise Server for SAP Applications 12 SP2
From an advisory covering 11 CVEs
 before 4.7.6_06-43.54.2
4.7.6_06-43.54.2
xen
SUSE:Linux Enterprise Server 12 SP2-LTSS
From an advisory covering 11 CVEs
 before 4.7.6_06-43.54.2
4.7.6_06-43.54.2
xen
SUSE:Linux Enterprise Server 12 SP2-BCL
From an advisory covering 11 CVEs
 before 4.7.6_06-43.54.2
4.7.6_06-43.54.2
xen
SUSE:Enterprise Storage 4
From an advisory covering 11 CVEs
 before 4.7.6_06-43.54.2
4.7.6_06-43.54.2

History

History
RecordedChangedSources
affected, facts
aliasesEUVD
first indexedCVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2019-17346 is a high vulnerability (CVSS 8.8) in Xen, published October 8, 2019. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.35%, the 28th percentile. Fixed in xen 4.11.2-r0.

References

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