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.

References[email protected]/message/ZLI2NPNEH7CNJO3VZGQNOI4M4EWLNKPZ/[email protected]/message/YZVXG7OOOXCX6VIPEMLFDPIPUTFAYWPE/[email protected]/message/YTMITQBGC23MSDHUCAPCVGLMVXIBXQTQ/


Source: MITRE

Published: 2022-11-01

Updated: 2022-11-29

Type: CWE-401


Base Score: 6.5

Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H

Impact Score: 4

Exploitability Score: 2

Severity: MEDIUM