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Fencer Vulns
medium 5.5

CVE-2022-42310 json

Xenstore: Guests can create orphaned Xenstore nodes By creating multiple nodes inside a transaction resulting in an error, a malicious gues…

published 2022-11-01 4 y ago modified 2026-06-17 4 mo ago also EUVD-2022-45385

cvss
5.5
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
0.3%
EPSS 0.3% chance of exploitation in 30 days, percentile 21%
public exploits
0
none known

Summary

Xenstore: Guests can create orphaned Xenstore nodes By creating multiple nodes inside a transaction resulting in an error, a malicious guest can create orphaned nodes in the Xenstore data base, as the cleanup after the error will not remove all nodes already created. When the transaction is committed after this situation, nodes without a valid parent can be made permanent in the data base.

Patch / fix

  • xen xen 4.13.0
  • xen Debian 14, Debian 13, Debian 12 4.16.2+90-g0d39a6d1ae-1

debian advisories DEBIAN-CVE-2022-42310

  • xen SLES for SAP 12 SP5, SLES 12 SP5, SLE Software Development Kit 12 SP5 4.12.4_30-3.82.1
  • xen SLES for SAP 12 SP4, SLES 12 SP4-LTSS, OpenStack Cloud Crowbar 9 +1 more 4.11.4_34-2.83.1
  • xen SLES 12 SP2-BCL 4.7.6_28-43.98.1
  • xen SLE Module for Server Applications 15 SP4, SLE Module for Basesystem 15 SP4, SLE Micro 5.3 +1 more 4.16.2_08-150400.4.16.1
  • xen SLES for SAP 15 SP2, SLES 15 SP2-LTSS, SLES 15 SP2-BCL +6 more 4.13.4_16-150200.3.65.1
  • xen SLES 12 SP3-BCL 4.9.4_34-3.114.1
  • xen SLE Module for Server Applications 15 SP3, SLE Module for Basesystem 15 SP3, SLE Micro 5.2 +3 more 4.14.5_08-150300.3.40.1
  • xen SLES for SAP 15 SP1, SLES 15 SP1-LTSS, SLES 15 SP1-BCL +3 more 4.12.4_30-150100.3.80.1

suse advisories SUSE-SU-2022:4332-1SUSE-SU-2022:4241-1SUSE-SU-2022:4051-1SUSE-SU-2022:4007-1SUSE-SU-2022:3971-1SUSE-SU-2022:3960-1

  • xen Alpine 3.15, Alpine 3.14 4.15.4-r0
  • xen Alpine 3.17, Alpine 3.16 4.16.3-r0
  • xen Alpine 3.24, Alpine 3.23, Alpine 3.22 +4 more 4.17.0-r0

alpine advisories ALPINE-CVE-2022-42310

Alpine secdb © Alpine Linux, from https://secdb.alpinelinux.org via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

Exploit prediction

0.29% chance of exploitation in the next 30 days, higher than 21% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 3.1 5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Affected products

  • Xen xen

Classification

Weakness

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.