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CVE-2020-29566

An issue was discovered in Xen through 4.14.x. When they require assistance from the device model...

5.5 MediumFix available

An issue was discovered in Xen through 4.14.x. When they require assistance from the device model, x86 HVM guests must be temporarily de-scheduled. The device model will signal Xen when it has completed its operation, via an event channel, so that the relevant vCPU is rescheduled. If the device model were to signal Xen without having actually completed the operation, the de-schedule / re-schedule cycle would repeat. If, in addition, Xen is resignalled very quickly, the re-schedule may occur before the de-schedule was fully complete, triggering a shortcut. This potentially repeating process uses ordinary recursive function calls, and thus could result in a stack overflow. A malicious or buggy stubdomain serving a HVM guest can cause Xen to crash, resulting in a Denial of Service (DoS) to the entire host. Only x86 systems are affected. Arm systems are not affected. Only x86 stubdomains serving HVM guests can exploit the vulnerability.

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
None
Integrity
None
Availability
High

Exploit likelihood

0.44%Down 0.9 points since Apr 14, 2021
90%50%10%1%

What each source reports

NVD Score used 5.5

An issue was discovered in Xen through 4.14.x. When they require assistance from the device model, x86 HVM guests must be temporarily de-scheduled. The device model will signal Xen when it has completed its operation, via an event channel, so that the relevant vCPU is rescheduled. If the device model were to signal Xen without having actually completed the operation, the de-schedule / re-schedule cycle would repeat. If, in addition, Xen is resignalled very quickly, the re-schedule may occur before the de-schedule was fully complete, triggering a shortcut. This potentially repeating process uses ordinary recursive function calls, and thus could result in a stack overflow. A malicious or buggy stubdomain serving a HVM guest can cause Xen to crash, resulting in a Denial of Service (DoS) to the entire host. Only x86 systems are affected. Arm systems are not affected. Only x86 stubdomains serving HVM guests can exploit the vulnerability.

Record
CVE-2020-29566
CVSS 3.1
5.5 MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CVSS 2.0
4.9 MediumAV:L/AC:L/Au:N/C:N/I:N/A:C
Weakness
CWE-674
Updated
2026-11-02
CVE List No score

An issue was discovered in Xen through 4.14.x. When they require assistance from the device model, x86 HVM guests must be temporarily de-scheduled. The device model will signal Xen when it has completed its operation, via an event channel, so that the relevant vCPU is rescheduled. If the device model were to signal Xen without having actually completed the operation, the de-schedule / re-schedule cycle would repeat. If, in addition, Xen is resignalled very quickly, the re-schedule may occur before the de-schedule was fully complete, triggering a shortcut. This potentially repeating process uses ordinary recursive function calls, and thus could result in a stack overflow. A malicious or buggy stubdomain serving a HVM guest can cause Xen to crash, resulting in a Denial of Service (DoS) to the entire host. Only x86 systems are affected. Arm systems are not affected. Only x86 stubdomains serving HVM guests can exploit the vulnerability.

Record
CVE-2020-29566
Updated
2026-11-02
EUVDEUVD-2020-21928 No score

An issue was discovered in Xen through 4.14.x. When they require assistance from the device model, x86 HVM guests must be temporarily de-scheduled. The device model will signal Xen when it has completed its operation, via an event channel, so that the relevant vCPU is rescheduled. If the device model were to signal Xen without having actually completed the operation, the de-schedule / re-schedule cycle would repeat. If, in addition, Xen is resignalled very quickly, the re-schedule may occur before the de-schedule was fully complete, triggering a shortcut. This potentially repeating process uses ordinary recursive function calls, and thus could result in a stack overflow. A malicious or buggy stubdomain serving a HVM guest can cause Xen to crash, resulting in a Denial of Service (DoS) to the entire host. Only x86 systems are affected. Arm systems are not affected. Only x86 stubdomains serving HVM guests can exploit the vulnerability.

Record
EUVD-2020-21928
Updated
2026-11-03
GitHub AdvisoriesGHSA-mr64-xwwr-mx4c No score

An issue was discovered in Xen through 4.14.x. When they require assistance from the device model...

An issue was discovered in Xen through 4.14.x. When they require assistance from the device model, x86 HVM guests must be temporarily de-scheduled. The device model will signal Xen when it has completed its operation, via an event channel, so that the relevant vCPU is rescheduled. If the device model were to signal Xen without having actually completed the operation, the de-schedule / re-schedule cycle would repeat. If, in addition, Xen is resignalled very quickly, the re-schedule may occur before the de-schedule was fully complete, triggering a shortcut. This potentially repeating process uses ordinary recursive function calls, and thus could result in a stack overflow. A malicious or buggy stubdomain serving a HVM guest can cause Xen to crash, resulting in a Denial of Service (DoS) to the entire host. Only x86 systems are affected. Arm systems are not affected. Only x86 stubdomains serving HVM guests can exploit the vulnerability.

Record
GHSA-mr64-xwwr-mx4c
Weakness
CWE-674
Updated
2026-11-02
OSVALPINE-CVE-2020-29566 5.5

An issue was discovered in Xen through 4.14.x. When they require assistance from the device model, x86 HVM guests must be temporarily de-scheduled. The device model will signal Xen when it has completed its operation, via an event channel, so that the relevant vCPU is rescheduled. If the device model were to signal Xen without having actually completed the operation, the de-schedule / re-schedule cycle would repeat. If, in addition, Xen is resignalled very quickly, the re-schedule may occur before the de-schedule was fully complete, triggering a shortcut. This potentially repeating process uses ordinary recursive function calls, and thus could result in a stack overflow. A malicious or buggy stubdomain serving a HVM guest can cause Xen to crash, resulting in a Denial of Service (DoS) to the entire host. Only x86 systems are affected. Arm systems are not affected. Only x86 stubdomains serving HVM guests can exploit the vulnerability.

Record
ALPINE-CVE-2020-29566
CVSS 3.1
5.5 MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Updated
2026-11-02
OSV 5.5

An issue was discovered in Xen through 4.14.x. When they require assistance from the device model, x86 HVM guests must be temporarily de-scheduled. The device model will signal Xen when it has completed its operation, via an event channel, so that the relevant vCPU is rescheduled. If the device model were to signal Xen without having actually completed the operation, the de-schedule / re-schedule cycle would repeat. If, in addition, Xen is resignalled very quickly, the re-schedule may occur before the de-schedule was fully complete, triggering a shortcut. This potentially repeating process uses ordinary recursive function calls, and thus could result in a stack overflow. A malicious or buggy stubdomain serving a HVM guest can cause Xen to crash, resulting in a Denial of Service (DoS) to the entire host. Only x86 systems are affected. Arm systems are not affected. Only x86 stubdomains serving HVM guests can exploit the vulnerability.

Record
CVE-2020-29566
CVSS 3.1
5.5 MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Updated
2026-11-02
Show 13 moreShow less
OSVDEBIAN-CVE-2020-29566 5.5

An issue was discovered in Xen through 4.14.x. When they require assistance from the device model, x86 HVM guests must be temporarily de-scheduled. The device model will signal Xen when it has completed its operation, via an event channel, so that the relevant vCPU is rescheduled. If the device model were to signal Xen without having actually completed the operation, the de-schedule / re-schedule cycle would repeat. If, in addition, Xen is resignalled very quickly, the re-schedule may occur before the de-schedule was fully complete, triggering a shortcut. This potentially repeating process uses ordinary recursive function calls, and thus could result in a stack overflow. A malicious or buggy stubdomain serving a HVM guest can cause Xen to crash, resulting in a Denial of Service (DoS) to the entire host. Only x86 systems are affected. Arm systems are not affected. Only x86 stubdomains serving HVM guests can exploit the vulnerability.

Record
DEBIAN-CVE-2020-29566
CVSS 3.1
5.5 MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Updated
2026-11-02
OSVUBUNTU-CVE-2020-29566 5.5

An issue was discovered in Xen through 4.14.x. When they require assistance from the device model, x86 HVM guests must be temporarily de-scheduled. The device model will signal Xen when it has completed its operation, via an event channel, so that the relevant vCPU is rescheduled. If the device model were to signal Xen without having actually completed the operation, the de-schedule / re-schedule cycle would repeat. If, in addition, Xen is resignalled very quickly, the re-schedule may occur before the de-schedule was fully complete, triggering a shortcut. This potentially repeating process uses ordinary recursive function calls, and thus could result in a stack overflow. A malicious or buggy stubdomain serving a HVM guest can cause Xen to crash, resulting in a Denial of Service (DoS) to the entire host. Only x86 systems are affected. Arm systems are not affected. Only x86 stubdomains serving HVM guests can exploit the vulnerability.

Record
UBUNTU-CVE-2020-29566
CVSS 3.1
5.5 MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Updated
2026-11-02
OSVopenSUSE-SU-2020:2313-1 No score

Security update for xen

This update for xen fixes the following issues:

  • CVE-2020-29480: Fixed an issue which could have allowed leak of non-sensitive data to administrator guests (bsc#117949 XSA-115).
  • CVE-2020-29481: Fixed an issue which could have allowd to new domains to inherit existing node permissions (bsc#1179498 XSA-322).
  • CVE-2020-29483: Fixed an issue where guests could disturb domain cleanup (bsc#1179502 XSA-325).
  • CVE-2020-29484: Fixed an issue where guests could crash xenstored via watchs (bsc#1179501 XSA-324).
  • CVE-2020-29566: Fixed an undue recursion in x86 HVM context switch code (bsc#1179506 XSA-348).
  • CVE-2020-29570: Fixed an issue where FIFO event channels control block related ordering (bsc#1179514 XSA-358).
  • CVE-2020-29571: Fixed an issue where FIFO event channels control structure ordering (bsc#1179516 XSA-359).
  • Fixed an issue where dump-core shows missing nr_pages during core (bsc#1176782).
  • Multiple other bugs (bsc#1027519)

This update was imported from the SUSE:SLE-15-SP1:Update update project.

Record
openSUSE-SU-2020:2313-1
Updated
2026-11-02
OSVopenSUSE-SU-2020:2331-1 No score

Security update for xen

This update for xen fixes the following issues:

  • CVE-2020-29480: Fixed an issue which could have allowed leak of non-sensitive data to administrator guests (bsc#117949 XSA-115).
  • CVE-2020-29481: Fixed an issue which could have allowd to new domains to inherit existing node permissions (bsc#1179498 XSA-322).
  • CVE-2020-29483: Fixed an issue where guests could disturb domain cleanup (bsc#1179502 XSA-325).
  • CVE-2020-29484: Fixed an issue where guests could crash xenstored via watchs (bsc#1179501 XSA-324).
  • CVE-2020-29566: Fixed an undue recursion in x86 HVM context switch code (bsc#1179506 XSA-348).
  • CVE-2020-29570: Fixed an issue where FIFO event channels control block related ordering (bsc#1179514 XSA-358).
  • CVE-2020-29571: Fixed an issue where FIFO event channels control structure ordering (bsc#1179516 XSA-359).
  • Fixed an issue where dump-core shows missing nr_pages during core (bsc#1176782).
  • Multiple other bugs (bsc#1027519)

This update was imported from the SUSE:SLE-15-SP2:Update update project.

Record
openSUSE-SU-2020:2331-1
Updated
2026-11-02
OSVopenSUSE-SU-2024:11520-1 No score

xen-4.15.1_01-1.2 on GA media

These are all security issues fixed in the xen-4.15.1_01-1.2 package on the GA media of openSUSE Tumbleweed.

Record
openSUSE-SU-2024:11520-1
Updated
2026-11-02
OSVSUSE-SU-2020:14578-1 No score

Security update for xen

This update for xen fixes the following issues:

  • CVE-2020-29480: Fixed an issue which could have allowed leak of non-sensitive data to administrator guests (bsc#117949 XSA-115).
  • CVE-2020-29481: Fixed an issue which could have allowd to new domains to inherit existing node permissions (bsc#1179498 XSA-322).
  • CVE-2020-29483: Fixed an issue where guests could disturb domain cleanup (bsc#1179502 XSA-325).
  • CVE-2020-29484: Fixed an issue where guests could crash xenstored via watchs (bsc#1179501 XSA-324).
  • CVE-2020-29566: Fixed an undue recursion in x86 HVM context switch code (bsc#1179506 XSA-348).
  • CVE-2020-29570: Fixed an issue where FIFO event channels control block related ordering (bsc#1179514 XSA-358).
  • CVE-2020-29571: Fixed an issue where FIFO event channels control structure ordering (bsc#1179516 XSA-359).
  • CVE-2020-29130: Fixed an out-of-bounds access while processing ARP packets (bsc#1179477).
Record
SUSE-SU-2020:14578-1
Updated
2026-11-02
OSVSUSE-SU-2020:3880-1 No score

Security update for xen

This update for xen fixes the following issues:

  • CVE-2020-29480: Fixed an issue which could have allowed leak of non-sensitive data to administrator guests (bsc#117949 XSA-115).
  • CVE-2020-29481: Fixed an issue which could have allowd to new domains to inherit existing node permissions (bsc#1179498 XSA-322).
  • CVE-2020-29483: Fixed an issue where guests could disturb domain cleanup (bsc#1179502 XSA-325).
  • CVE-2020-29484: Fixed an issue where guests could crash xenstored via watchs (bsc#1179501 XSA-324).
  • CVE-2020-29566: Fixed an undue recursion in x86 HVM context switch code (bsc#1179506 XSA-348).
  • CVE-2020-29570: Fixed an issue where FIFO event channels control block related ordering (bsc#1179514 XSA-358).
  • CVE-2020-29571: Fixed an issue where FIFO event channels control structure ordering (bsc#1179516 XSA-359).
  • CVE-2020-29130: Fixed an out-of-bounds access while processing ARP packets (bsc#1179477).
  • Fixed an issue where dump-core shows missing nr_pages during core (bsc#1176782).
  • Multiple other bugs (bsc#1027519)
Record
SUSE-SU-2020:3880-1
Updated
2026-11-02
OSVSUSE-SU-2020:3881-1 No score

Security update for xen

This update for xen fixes the following issues:

  • CVE-2020-29480: Fixed an issue which could have allowed leak of non-sensitive data to administrator guests (bsc#117949 XSA-115).
  • CVE-2020-29481: Fixed an issue which could have allowd to new domains to inherit existing node permissions (bsc#1179498 XSA-322).
  • CVE-2020-29483: Fixed an issue where guests could disturb domain cleanup (bsc#1179502 XSA-325).
  • CVE-2020-29484: Fixed an issue where guests could crash xenstored via watchs (bsc#1179501 XSA-324).
  • CVE-2020-29566: Fixed an undue recursion in x86 HVM context switch code (bsc#1179506 XSA-348).
  • CVE-2020-29570: Fixed an issue where FIFO event channels control block related ordering (bsc#1179514 XSA-358).
  • CVE-2020-29571: Fixed an issue where FIFO event channels control structure ordering (bsc#1179516 XSA-359).
  • Fixed an issue where dump-core shows missing nr_pages during core (bsc#1176782).
  • Multiple other bugs (bsc#1027519)
Record
SUSE-SU-2020:3881-1
Updated
2026-11-02
OSVSUSE-SU-2020:3913-1 No score

Security update for xen

This update for xen fixes the following issues:

  • CVE-2020-29480: Fixed an issue which could have allowed leak of non-sensitive data to administrator guests (bsc#117949 XSA-115).
  • CVE-2020-29481: Fixed an issue which could have allowd to new domains to inherit existing node permissions (bsc#1179498 XSA-322).
  • CVE-2020-29483: Fixed an issue where guests could disturb domain cleanup (bsc#1179502 XSA-325).
  • CVE-2020-29484: Fixed an issue where guests could crash xenstored via watchs (bsc#1179501 XSA-324).
  • CVE-2020-29566: Fixed an undue recursion in x86 HVM context switch code (bsc#1179506 XSA-348).
  • CVE-2020-29570: Fixed an issue where FIFO event channels control block related ordering (bsc#1179514 XSA-358).
  • CVE-2020-29571: Fixed an issue where FIFO event channels control structure ordering (bsc#1179516 XSA-359).
  • CVE-2020-29130: Fixed an out-of-bounds access while processing ARP packets (bsc#1179477).
  • Fixed an issue where dump-core shows missing nr_pages during core (bsc#1176782).
  • Multiple other bugs (bsc#1027519)
Record
SUSE-SU-2020:3913-1
Updated
2026-11-02
OSVSUSE-SU-2020:3914-1 No score

Security update for xen

This update for xen fixes the following issues:

  • CVE-2020-29480: Fixed an issue which could have allowed leak of non-sensitive data to administrator guests (bsc#117949 XSA-115).
  • CVE-2020-29481: Fixed an issue which could have allowd to new domains to inherit existing node permissions (bsc#1179498 XSA-322).
  • CVE-2020-29483: Fixed an issue where guests could disturb domain cleanup (bsc#1179502 XSA-325).
  • CVE-2020-29484: Fixed an issue where guests could crash xenstored via watchs (bsc#1179501 XSA-324).
  • CVE-2020-29566: Fixed an undue recursion in x86 HVM context switch code (bsc#1179506 XSA-348).
  • CVE-2020-29570: Fixed an issue where FIFO event channels control block related ordering (bsc#1179514 XSA-358).
  • CVE-2020-29571: Fixed an issue where FIFO event channels control structure ordering (bsc#1179516 XSA-359).
  • CVE-2020-29130: Fixed an out-of-bounds access while processing ARP packets (bsc#1179477).
  • Fixed an issue where dump-core shows missing nr_pages during core (bsc#1176782).
  • Multiple other bugs (bsc#1027519)
Record
SUSE-SU-2020:3914-1
Updated
2026-11-02
OSVSUSE-SU-2020:3915-1 No score

Security update for xen

This update for xen fixes the following issues:

  • CVE-2020-29480: Fixed an issue which could have allowed leak of non-sensitive data to administrator guests (bsc#117949 XSA-115).
  • CVE-2020-29481: Fixed an issue which could have allowd to new domains to inherit existing node permissions (bsc#1179498 XSA-322).
  • CVE-2020-29483: Fixed an issue where guests could disturb domain cleanup (bsc#1179502 XSA-325).
  • CVE-2020-29484: Fixed an issue where guests could crash xenstored via watchs (bsc#1179501 XSA-324).
  • CVE-2020-29566: Fixed an undue recursion in x86 HVM context switch code (bsc#1179506 XSA-348).
  • CVE-2020-29570: Fixed an issue where FIFO event channels control block related ordering (bsc#1179514 XSA-358).
  • CVE-2020-29571: Fixed an issue where FIFO event channels control structure ordering (bsc#1179516 XSA-359).
  • Fixed an issue where dump-core shows missing nr_pages during core (bsc#1176782).
  • Multiple other bugs (bsc#1027519)
Record
SUSE-SU-2020:3915-1
Updated
2026-11-02
OSVSUSE-SU-2020:3916-1 No score

Security update for xen

This update for xen fixes the following issues:

  • CVE-2020-29480: Fixed an issue which could have allowed leak of non-sensitive data to administrator guests (bsc#117949 XSA-115).
  • CVE-2020-29481: Fixed an issue which could have allowd to new domains to inherit existing node permissions (bsc#1179498 XSA-322).
  • CVE-2020-29483: Fixed an issue where guests could disturb domain cleanup (bsc#1179502 XSA-325).
  • CVE-2020-29484: Fixed an issue where guests could crash xenstored via watchs (bsc#1179501 XSA-324).
  • CVE-2020-29566: Fixed an undue recursion in x86 HVM context switch code (bsc#1179506 XSA-348).
  • CVE-2020-29570: Fixed an issue where FIFO event channels control block related ordering (bsc#1179514 XSA-358).
  • CVE-2020-29571: Fixed an issue where FIFO event channels control structure ordering (bsc#1179516 XSA-359).
  • Fixed an issue where dump-core shows missing nr_pages during core (bsc#1176782).
  • Multiple other bugs (bsc#1027519)
Record
SUSE-SU-2020:3916-1
Updated
2026-11-02
OSVSUSE-SU-2020:3945-1 No score

Security update for xen

This update for xen fixes the following issues:

  • CVE-2020-29480: Fixed an issue which could have allowed leak of non-sensitive data to administrator guests (bsc#117949 XSA-115).
  • CVE-2020-29481: Fixed an issue which could have allowd to new domains to inherit existing node permissions (bsc#1179498 XSA-322).
  • CVE-2020-29483: Fixed an issue where guests could disturb domain cleanup (bsc#1179502 XSA-325).
  • CVE-2020-29484: Fixed an issue where guests could crash xenstored via watchs (bsc#1179501 XSA-324).
  • CVE-2020-29566: Fixed an undue recursion in x86 HVM context switch code (bsc#1179506 XSA-348).
  • CVE-2020-29570: Fixed an issue where FIFO event channels control block related ordering (bsc#1179514 XSA-358).
  • CVE-2020-29571: Fixed an issue where FIFO event channels control structure ordering (bsc#1179516 XSA-359).
  • CVE-2020-29130: Fixed an out-of-bounds access while processing ARP packets (bsc#1179477).
  • Fixed an issue where dump-core shows missing nr_pages during core (bsc#1176782).
  • Multiple other bugs (bsc#1027519)
Record
SUSE-SU-2020:3945-1
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
xen
Alpine:v3.11
 before 4.13.2-r3
4.13.2-r3
xen
Alpine:v3.12
 before 4.13.2-r3
4.13.2-r3
xen
Alpine:v3.13
 before 4.14.1-r0
4.14.1-r0
xen
Alpine:v3.14
 before 4.14.1-r0
4.14.1-r0
xen
Alpine:v3.15
 before 4.14.1-r0
4.14.1-r0
xen
Alpine:v3.16
 before 4.14.1-r0
4.14.1-r0
xen
Alpine:v3.17
 before 4.14.1-r0
4.14.1-r0
xen
Alpine:v3.18
 before 4.14.1-r0
4.14.1-r0
xen
Alpine:v3.19
 before 4.14.1-r0
4.14.1-r0
xen
Alpine:v3.20
 before 4.14.1-r0
4.14.1-r0
Show 40 moreShow less
Affected packages
PackageAffectedFixed
xen
Alpine:v3.21
 before 4.14.1-r0
4.14.1-r0
xen
Alpine:v3.22
 before 4.14.1-r0
4.14.1-r0
xen
Alpine:v3.23
 before 4.14.1-r0
4.14.1-r0
xen
Alpine:v3.24
 before 4.14.1-r0
4.14.1-r0
xen
Debian:12
 before 4.14.0+88-g1d1d1f5391-1
4.14.0+88-g1d1d1f5391-1
xen
Debian:13
 before 4.14.0+88-g1d1d1f5391-1
4.14.0+88-g1d1d1f5391-1
xen
Debian:14
 before 4.14.0+88-g1d1d1f5391-1
4.14.0+88-g1d1d1f5391-1
xen
Debian:10
From an advisory covering 11 CVEs
 before 4.11.4+57-g41a822c392-2, plus listed versions
4.11.1+92-g6c33308a8d-24.11.3+24-g14b62ab3e5-14.11.3+24-g14b62ab3e5-1~deb10u14.11.4+24-gddaaccbbab-14.11.4+24-gddaaccbbab-1~deb10u14.11.4+37-g3263f257ca-14.11.4+57-g41a822c392-14.11.4-1
4.11.4+57-g41a822c392-2
xen
SUSE:Linux Enterprise Server 11 SP4-LTSS
From an advisory covering 8 CVEs
 before 4.4.4_48-61.61.1
4.4.4_48-61.61.1
xen
SUSE:Linux Enterprise Software Development Kit 12 SP5
From an advisory covering 9 CVEs
 before 4.12.4_06-3.36.1
4.12.4_06-3.36.1
xen
SUSE:Linux Enterprise Server 12 SP5
From an advisory covering 9 CVEs
 before 4.12.4_06-3.36.1
4.12.4_06-3.36.1
xen
SUSE:Linux Enterprise Server for SAP Applications 12 SP5
From an advisory covering 9 CVEs
 before 4.12.4_06-3.36.1
4.12.4_06-3.36.1
xen
SUSE:Linux Enterprise Module for Basesystem 15 SP1
From an advisory covering 7 CVEs
 before 4.12.4_06-3.40.1
4.12.4_06-3.40.1
xen
SUSE:Linux Enterprise Module for Server Applications 15 SP1
From an advisory covering 7 CVEs
 before 4.12.4_06-3.40.1
4.12.4_06-3.40.1
xen
SUSE:OpenStack Cloud 7
From an advisory covering 8 CVEs
 before 4.7.6_14-43.73.1
4.7.6_14-43.73.1
xen
SUSE:Linux Enterprise Server for SAP Applications 12 SP2
From an advisory covering 8 CVEs
 before 4.7.6_14-43.73.1
4.7.6_14-43.73.1
xen
SUSE:Linux Enterprise Server 12 SP2-LTSS
From an advisory covering 8 CVEs
 before 4.7.6_14-43.73.1
4.7.6_14-43.73.1
xen
SUSE:Linux Enterprise Server 12 SP2-BCL
From an advisory covering 8 CVEs
 before 4.7.6_14-43.73.1
4.7.6_14-43.73.1
xen
SUSE:OpenStack Cloud 9
From an advisory covering 8 CVEs
 before 4.11.4_16-2.48.1
4.11.4_16-2.48.1
xen
SUSE:OpenStack Cloud Crowbar 9
From an advisory covering 8 CVEs
 before 4.11.4_16-2.48.1
4.11.4_16-2.48.1
xen
SUSE:Linux Enterprise Server for SAP Applications 12 SP4
From an advisory covering 8 CVEs
 before 4.11.4_16-2.48.1
4.11.4_16-2.48.1
xen
SUSE:Linux Enterprise Server 12 SP4-LTSS
From an advisory covering 8 CVEs
 before 4.11.4_16-2.48.1
4.11.4_16-2.48.1
xen
SUSE:Linux Enterprise Module for Basesystem 15 SP2
From an advisory covering 7 CVEs
 before 4.13.2_06-3.22.1
4.13.2_06-3.22.1
xen
SUSE:Linux Enterprise Module for Server Applications 15 SP2
From an advisory covering 7 CVEs
 before 4.13.2_06-3.22.1
4.13.2_06-3.22.1
xen
SUSE:Linux Enterprise High Performance Computing 15-ESPOS
From an advisory covering 7 CVEs
 before 4.10.4_24-3.53.1
4.10.4_24-3.53.1
xen
SUSE:Linux Enterprise High Performance Computing 15-LTSS
From an advisory covering 7 CVEs
 before 4.10.4_24-3.53.1
4.10.4_24-3.53.1
xen
SUSE:Linux Enterprise Server for SAP Applications 15
From an advisory covering 7 CVEs
 before 4.10.4_24-3.53.1
4.10.4_24-3.53.1
xen
SUSE:HPE Helion OpenStack 8
From an advisory covering 8 CVEs
 before 4.9.4_16-3.80.1
4.9.4_16-3.80.1
xen
SUSE:OpenStack Cloud 8
From an advisory covering 8 CVEs
 before 4.9.4_16-3.80.1
4.9.4_16-3.80.1
xen
SUSE:OpenStack Cloud Crowbar 8
From an advisory covering 8 CVEs
 before 4.9.4_16-3.80.1
4.9.4_16-3.80.1
xen
SUSE:Linux Enterprise Server for SAP Applications 12 SP3
From an advisory covering 8 CVEs
 before 4.9.4_16-3.80.1
4.9.4_16-3.80.1
xen
SUSE:Linux Enterprise Server 12 SP3-LTSS
From an advisory covering 8 CVEs
 before 4.9.4_16-3.80.1
4.9.4_16-3.80.1
xen
SUSE:Linux Enterprise Server 12 SP3-BCL
From an advisory covering 8 CVEs
 before 4.9.4_16-3.80.1
4.9.4_16-3.80.1
xen
SUSE:Enterprise Storage 5
From an advisory covering 8 CVEs
 before 4.9.4_16-3.80.1
4.9.4_16-3.80.1
xen
Ubuntu:16.04:LTS
 All versions, plus listed versions
4.5.1-0ubuntu14.5.1-0ubuntu24.6.0-1ubuntu14.6.0-1ubuntu24.6.0-1ubuntu4
Show 7 moreShow less
4.6.0-1ubuntu4.14.6.0-1ubuntu4.24.6.0-1ubuntu4.34.6.5-0ubuntu14.6.5-0ubuntu1.14.6.5-0ubuntu1.24.6.5-0ubuntu1.4
 None known
xen
Ubuntu:18.04:LTS
 All versions, plus listed versions
4.9.0-0ubuntu34.9.0-0ubuntu44.9.2-0ubuntu1
 None known
xen
Ubuntu:20.04:LTS
 All versions, plus listed versions
4.9.2-0ubuntu24.9.2-0ubuntu64.9.2-0ubuntu74.11.3+24-g14b62ab3e5-1ubuntu14.11.3+24-g14b62ab3e5-1ubuntu24.11.3+24-g14b62ab3e5-1ubuntu2.24.11.3+24-g14b62ab3e5-1ubuntu2.3
 None known
xen
openSUSE:Leap 15.1
From an advisory covering 7 CVEs
 before 4.12.4_06-lp151.2.36.1
4.12.4_06-lp151.2.36.1
xen
openSUSE:Leap 15.2
From an advisory covering 7 CVEs
 before 4.13.2_06-lp152.2.21.1
4.13.2_06-lp152.2.21.1
xen
openSUSE:Tumbleweed
From an advisory covering 93 CVEs
 before 4.15.1_01-1.2
4.15.1_01-1.2

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-2020-29566 is a medium vulnerability (CVSS 5.5) in Xen, published December 15, 2020. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.44%, the 38th percentile. Fixed in xen 4.13.2-r3.

References

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