CVE-2022-42321

Description

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.

Category

6.5
CVSS
Severity: Medium
CVSS 3.1 •
EPSS 0.02%
Vendor Advisory debian.org Vendor Advisory fedoraproject.org Vendor Advisory fedoraproject.org Vendor Advisory fedoraproject.org Vendor Advisory gentoo.org Vendor Advisory xen.org Vendor Advisory xenproject.org
Affected: Xen xen
Published at:
Updated at:

References

Link Tags
https://xenbits.xenproject.org/xsa/advisory-418.txt patch vendor advisory
http://xenbits.xen.org/xsa/advisory-418.html patch vendor advisory
http://www.openwall.com/lists/oss-security/2022/11/01/8 third party advisory mailing list
https://www.debian.org/security/2022/dsa-5272 third party advisory vendor advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZLI2NPNEH7CNJO3VZGQNOI4M4EWLNKPZ/ vendor advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/YZVXG7OOOXCX6VIPEMLFDPIPUTFAYWPE/ vendor advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/YTMITQBGC23MSDHUCAPCVGLMVXIBXQTQ/ vendor advisory
https://security.gentoo.org/glsa/202402-07 vendor advisory

Frequently Asked Questions

What is the severity of CVE-2022-42321?
CVE-2022-42321 has been scored as a medium severity vulnerability.
How to fix CVE-2022-42321?
To fix CVE-2022-42321, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2022-42321 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2022-42321 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2022-42321?
CVE-2022-42321 affects Xen xen.
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