Description
Xenstore: Guests can create arbitrary number of nodes via transactions T[his CNA information record relates to multiple CVEs; the text explains which aspects/vulnerabilities correspond to which CVE.] In case a node has been created in a transaction and it is later deleted in the same transaction, the transaction will be terminated with an error. As this error is encountered only when handling the deleted node at transaction finalization, the transaction will have been performed partially and without updating the accounting information. This will enable a malicious guest to create arbitrary number of nodes.
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 20 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 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 10
- 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-2022:4241-1 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-421.txt
- http://xenbits.xen.org/xsa/advisory-421.html
- [oss-security] 20221101 Xen Security Advisory 421 v2 (CVE-2022-42325,CVE-2022-42326) - Xenstore: Guests can create arbitrary number of nodes via transactions 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