Description
Xenstore: Cooperating guests can create arbitrary numbers of nodes T[his CNA information record relates to multiple CVEs; the text explains which aspects/vulnerabilities correspond to which CVE.] Since the fix of XSA-322 any Xenstore node owned by a removed domain will be modified to be owned by Dom0. This will allow two malicious guests working together to create an arbitrary number of Xenstore nodes. This is possible by domain A letting domain B write into domain A's local Xenstore tree. Domain B can then create many nodes and reboot. The nodes created by domain B will now be owned by Dom0. By repeating this process over and over again an arbitrary number of nodes can be created, as Dom0's number of nodes isn't limited by Xenstore quota.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Xen | xen | — | — |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | xen | 4.16.2+90-g0d39a6d1ae-1 | — |
| Debian 13 | xen | 4.16.2+90-g0d39a6d1ae-1 | — |
| Debian 12 | xen | 4.16.2+90-g0d39a6d1ae-1 | — |
| Debian 11 | xen | 4.14.5+86-g1c354767d5-1 | DSA-5272-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 26.10 | xen | No fix yet | — |
| Ubuntu 26.04 LTS | xen | No fix yet | — |
| Ubuntu 25.10 | xen | No fix yet | — |
| Ubuntu 24.04 LTS | xen | No fix yet | — |
| Ubuntu 22.04 LTS | xen | No fix yet | — |
Show 3 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 20.04 LTS | xen | No fix yet | — |
| Ubuntu 18.04 LTS | xen | No fix yet | — |
| Ubuntu 16.04 LTS | xen | No fix yet | — |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP4 | xen | 4.16.2_08-150400.4.16.1 | SUSE-SU-2022:4007-1 |
| SLES 15 SP3 | xen | 4.14.5_08-150300.3.40.1 | SUSE-SU-2022:3947-1 |
| SLES 15 SP2 | xen | 4.13.4_16-150200.3.65.1 | SUSE-SU-2022:3971-1 |
| SLES 15 SP1 | xen | 4.12.4_30-150100.3.80.1 | SUSE-SU-2022:3928-1 |
| SLES 12 SP5 | xen | 4.12.4_30-3.82.1 | SUSE-SU-2022:4332-1 |
Show 21 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 12 SP4 | xen | 4.11.4_34-2.83.1 | SUSE-SU-2022:4241-1 |
| SLES 12 SP3 | xen | 4.9.4_34-3.114.1 | SUSE-SU-2022:3960-1 |
| SLES 12 SP2 | xen | 4.7.6_28-43.98.1 | SUSE-SU-2022:4051-1 |
| SLES for SAP 15 SP2 | xen | 4.13.4_16-150200.3.65.1 | SUSE-SU-2022:3971-1 |
| SLES for SAP 15 SP1 | xen | 4.12.4_30-150100.3.80.1 | SUSE-SU-2022:3928-1 |
| SLES for SAP 15 | xen | 4.10.4_40-150000.3.84.1 | SUSE-SU-2022:3925-1 |
| SLES for SAP 12 SP5 | xen | 4.12.4_30-3.82.1 | SUSE-SU-2022:4332-1 |
| SLES for SAP 12 SP4 | xen | 4.11.4_34-2.83.1 | SUSE-SU-2022:4241-1 |
| SLE Micro 5.3 | xen | 4.16.2_08-150400.4.16.1 | SUSE-SU-2022:4007-1 |
| SLE Micro 5.2 | xen | 4.14.5_08-150300.3.40.1 | SUSE-SU-2022:3947-1 |
| SLE Micro 5.1 | xen | 4.14.5_08-150300.3.40.1 | SUSE-SU-2022:3947-1 |
| SLE HPC 15 SP2 | xen | 4.13.4_16-150200.3.65.1 | SUSE-SU-2022:3971-1 |
| SLE HPC 15 SP1 | xen | 4.12.4_30-150100.3.80.1 | SUSE-SU-2022:3928-1 |
| SLE HPC 15 | xen | 4.10.4_40-150000.3.84.1 | SUSE-SU-2022:3925-1 |
| SUSE OpenStack Cloud Crowbar 9 | xen | 4.11.4_34-2.83.1 | SUSE-SU-2022:4241-1 |
| SUSE OpenStack Cloud 9 | xen | 4.11.4_34-2.83.1 | SUSE-SU-2022:4241-1 |
| SUSE Manager Server 4.1 | xen | 4.13.4_16-150200.3.65.1 | SUSE-SU-2022:3971-1 |
| SUSE Manager Retail Branch Server 4.1 | xen | 4.13.4_16-150200.3.65.1 | SUSE-SU-2022:3971-1 |
| SUSE Manager Proxy 4.1 | xen | 4.13.4_16-150200.3.65.1 | SUSE-SU-2022:3971-1 |
| SUSE Enterprise Storage 7 | xen | 4.13.4_16-150200.3.65.1 | SUSE-SU-2022:3971-1 |
| SUSE Enterprise Storage 6 | xen | 4.12.4_30-150100.3.80.1 | SUSE-SU-2022:3928-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Leap 15.4 | xen | 4.16.2_08-150400.4.16.1 | SUSE-SU-2022:4007-1 |
| openSUSE Leap 15.3 | xen | 4.14.5_08-150300.3.40.1 | SUSE-SU-2022:3947-1 |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Leap Micro 5.2 | xen | 4.14.5_08-150300.3.40.1 | SUSE-SU-2022:3947-1 |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.24 | xen | 4.17.0-r0 | — |
| Alpine v3.23 | xen | 4.17.0-r0 | — |
| Alpine v3.22 | xen | 4.17.0-r0 | — |
| Alpine v3.21 | xen | 4.17.0-r0 | — |
| Alpine v3.20 | xen | 4.17.0-r0 | — |
Show 6 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.19 | xen | 4.17.0-r0 | — |
| Alpine v3.18 | xen | 4.17.0-r0 | — |
| Alpine v3.17 | xen | 4.16.3-r0 | — |
| Alpine v3.16 | xen | 4.16.3-r0 | — |
| Alpine v3.15 | xen | 4.15.4-r0 | — |
| Alpine v3.14 | xen | 4.15.4-r0 | — |
Advisories 11
- DSA-5272-1 xen - security update Debian Security (DSA / DLA) · Mar 9, 2026
- SUSE-SU-2022:3947-1 Security update for xen SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2022:3925-1 Security update for xen SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2022:4332-1 Security update for xen SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2022:3928-1 Security update for xen SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2022:4007-1 Security update for xen SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2022:3960-1 Security update for xen SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2022:4051-1 Security update for xen SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2022:4241-1 Security update for xen SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2022:3971-1 Security update for xen SUSE / openSUSE Security Updates · May 2, 2025
- WID-SEC-2022-1939 Xen: Mehrere Schwachstellen BSI CERT-Bund (WID) · Feb 4, 2024
References
- https://xenbits.xenproject.org/xsa/advisory-419.txt
- http://xenbits.xen.org/xsa/advisory-419.html
- [oss-security] 20221101 Xen Security Advisory 419 v2 (CVE-2022-42322,CVE-2022-42323) - Xenstore: Cooperating guests can create arbitrary numbers of nodes mailing-list
- DSA-5272 vendor-advisory
- FEDORA-2022-07438e12df vendor-advisory
- FEDORA-2022-99af00f60e vendor-advisory
- FEDORA-2022-9f51d13fa3 vendor-advisory
- GLSA-202402-07 vendor-advisory