CVE-2022-42319

Summary

Xenstore: Guests can cause Xenstore to not free temporary memory When working on a request of a guest, xenstored might need to allocate quite large amounts of memory temporarily. This memory is freed only after the request has been finished completely. A request is regarded to be finished only after the guest has read the response message of the request from the ring page. Thus a guest not reading the response can cause xenstored to not free the temporary memory. This can result in memory shortages causing Denial of Service (DoS) of xenstored.

Affected Software

Weaknesses

• unknown

ADP Enrichment

CVE Program Container

Additional References

• https://xenbits.xenproject.org/xsa/advisory-416.txt
• http://xenbits.xen.org/xsa/advisory-416.html
• http://www.openwall.com/lists/oss-security/2022/11/01/6
• https://www.debian.org/security/2022/dsa-5272
• 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

References

• https://xenbits.xenproject.org/xsa/advisory-416.txt
• http://xenbits.xen.org/xsa/advisory-416.html
• http://www.openwall.com/lists/oss-security/2022/11/01/6
• https://www.debian.org/security/2022/dsa-5272
• 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

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