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Debian: CVE-2022-42319: xen -- security update

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Debian: CVE-2022-42319: xen -- security update

Severity
4
CVSS
(AV:L/AC:M/Au:N/C:P/I:P/A:P)
Published
11/01/2022
Created
11/09/2022
Added
11/08/2022
Modified
11/09/2022

Description

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.

Solution(s)

  • debian-upgrade-xen

References

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