CVE-2022-42321

mediumpriority · track · 26EPSS 0.003 · 21 %ileDERUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

0.29% (21st) EPSS

CVSS 6.5 · medium

Is it mine?

22 products

Check your exposure

Who says so?

5 sources

cnnvd · enisa_euvd · fstec_bdu · cert_bund

EPSS · scored 2026-10-27

Xenstore: Guests can crash xenstored via exhausting the stack Xenstored is using recursion for some Xenstore operations (e.g. for deleting a sub-tree of Xenstore nodes). With sufficiently deep nesting levels this can result in stack exhaustion on xenstored, leading to a crash of xenstored.

cvss

Technical severity, 0–10. One row per scoring source.

6.5

010

base score 0–10 · higher = more severe · hover a vector to decode

v3.16.5mediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:Hprimary · NVD / NIST USexploitability 2 · impact 4

v3.16.5mediumAV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:Hsecondary · FSTEC (BDU) RU

v3.16mediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H/E:Usecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-674USprimaryCWE-674US

affected products (22)

Products and version ranges known to be affected.

Citrix Systems Hypervisor 8.2 LTSR CU1all versionscert_bundDEcpe:/o:citrix:hypervisor:8.2_ltsr_cu1
Debian Linuxall versionscert_bundDEcpe:/o:debian:debian_linux:-
Gentoo Linuxall versionscert_bundDEcpe:/o:gentoo:linux:-
Open Source Xen 4.13.xall versionscert_bundDEcpe:/o:xen:xen:4.13.x
Open Source Xen 4.15.xall versionscert_bundDEcpe:/o:xen:xen:4.15.x
Open Source Xen 4.16.xall versionscert_bundDEcpe:/o:xen:xen:4.16.x
SUSE Linuxall versionscert_bundDEcpe:/o:suse:suse_linux:-
Fedora Project Fedora≤ 37fstec_bduRU
Fedora Project Fedora≤ 36fstec_bduRU
Fedora Project Fedora≤ 35fstec_bduRU
Oracle Corp. Oracle Exadata≤ 21.2.23.0.0 (Patch 35130088)fstec_bduRU
Oracle Corp. Oracle Exadata≤ 21.2.23.0.0 (Patch 35277269)fstec_bduRU
Oracle Corp. Oracle VM Server for x86≤ 3fstec_bduRU
The Linux Foundation Xenall versionsfstec_bduRU
АО «НППКТ» ОСОН ОСнова Оnyx≤ 2.8fstec_bduRU
Сообщество свободного программного обеспечения Debian GNU/Linux≤ 10fstec_bduRU
Сообщество свободного программного обеспечения Debian GNU/Linux≤ 11fstec_bduRU
debian debian linux= 11.0nvdUScpe:2.3:o:debian:debian_linux:*:*:*:*:*:*:*:*
fedoraproject fedora= 35nvdUScpe:2.3:o:fedoraproject:fedora:*:*:*:*:*:*:*:*
fedoraproject fedora= 36nvdUScpe:2.3:o:fedoraproject:fedora:*:*:*:*:*:*:*:*

showing 20 of 22

advisories (1)

Vendor and ecosystem advisories describing this.

WID-SEC-W-2022-1939Xen: Mehrere SchwachstellenDeutsch2022-11-01csaf · cert_bundDE
Ein entfernter, authentisierter Angreifer kann mehrere Schwachstellen in Xen und Citrix Systems Hypervisor ausnutzen um einen Denial of Service zu verursachen, Informationen offenzulegen oder seine Rechte zu erweitern.

also known as (4)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd fstec_bdu cert_bund nvd NVD CVE.org MITRE

published 2022-11-01modified 2026-06-17

related (725)

Related entries.

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+720 more

references (31)

External citations — patches, advisories, analysis.

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