CVE-2022-42321
First published: Tue Nov 01 2022(Updated: )
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.
Credit: security@xen.org security@xen.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| debian/xen | <=4.11.4+107-gef32c7afa2-1 | 4.14.6-1 4.14.5+94-ge49571868d-1 4.17.1+2-gb773c48e36-1 4.17.2+55-g0b56bed864-1 |
| Xen Xen | ||
| Debian Debian Linux | =11.0 | |
| Fedoraproject Fedora | =35 | |
| Fedoraproject Fedora | =36 | |
| Fedoraproject Fedora | =37 |
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Reference Links
- https://xenbits.xen.org/xsa/advisory-418.html
- https://security-tracker.debian.org/tracker/CVE-2022-42321
- http://www.openwall.com/lists/oss-security/2022/11/01/8
- http://xenbits.xen.org/xsa/advisory-418.html
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/YTMITQBGC23MSDHUCAPCVGLMVXIBXQTQ/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/YZVXG7OOOXCX6VIPEMLFDPIPUTFAYWPE/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/ZLI2NPNEH7CNJO3VZGQNOI4M4EWLNKPZ/
- https://www.debian.org/security/2022/dsa-5272
- https://xenbits.xenproject.org/xsa/advisory-418.txt
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZLI2NPNEH7CNJO3VZGQNOI4M4EWLNKPZ/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/YZVXG7OOOXCX6VIPEMLFDPIPUTFAYWPE/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/YTMITQBGC23MSDHUCAPCVGLMVXIBXQTQ/
- https://security.gentoo.org/glsa/202402-07
Frequently Asked Questions
What is the severity of CVE-2022-42321?
The severity of CVE-2022-42321 is medium.
How can guests crash xenstored using CVE-2022-42321?
Guests can crash xenstored by exhausting the stack through recursion, specifically when deleting a sub-tree of Xenstore nodes.
Which versions of xen are affected by CVE-2022-42321?
Versions 4.14.6-1, 4.14.5+94-ge49571868d-1, 4.17.1+2-gb773c48e36-1, and 4.17.2+55-g0b56bed864-1 are affected by CVE-2022-42321.
Which software packages are affected by CVE-2022-42321?
Debian Xen, Xen Xen, Debian Debian Linux, Fedoraproject Fedora 35, Fedoraproject Fedora 36, and Fedoraproject Fedora 37 are affected by CVE-2022-42321.
How can I fix CVE-2022-42321?
To fix CVE-2022-42321, update your Xen software to versions 4.14.6-1, 4.14.5+94-ge49571868d-1, 4.17.1+2-gb773c48e36-1, or 4.17.2+55-g0b56bed864-1.
- collector/security-tracker-debian
- collector/nvd-index
- agent/type
- agent/softwarecombine
- agent/remedy
- collector/mitre-cve
- source/MITRE
- agent/references
- agent/severity
- agent/weakness
- agent/author
- agent/tags
- agent/last-modified-date
- agent/description
- agent/first-publish-date
- agent/event
- collector/nvd-api
- source/NVD
- agent/software-canonical-lookup
- package-manager/debian
- vendor/xen
- canonical/xen xen
- vendor/debian
- canonical/debian debian linux
- version/debian debian linux/11.0
- vendor/fedoraproject
- canonical/fedoraproject fedora
- version/fedoraproject fedora/35
- version/fedoraproject fedora/36
- version/fedoraproject fedora/37