CVE-2022-42309

Description

Xenstore: Guests can crash xenstored Due to a bug in the fix of XSA-115 a malicious guest can cause xenstored to use a wrong pointer during node creation in an error path, resulting in a crash of xenstored or a memory corruption in xenstored causing further damage. Entering the error path can be controlled by the guest e.g. by exceeding the quota value of maximum nodes per domain.

Category

8.8
CVSS
Severity: High
CVSS 3.1 •
EPSS 0.04%
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-414.txt patch vendor advisory
http://xenbits.xen.org/xsa/advisory-414.html patch vendor advisory
http://www.openwall.com/lists/oss-security/2022/11/01/4 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-2022-42309?
CVE-2022-42309 has been scored as a high severity vulnerability.
How to fix CVE-2022-42309?
To fix CVE-2022-42309, 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-2022-42309 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2022-42309 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-2022-42309?
CVE-2022-42309 affects Xen xen.
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