CVE-2022-42319

NameCVE-2022-42319
DescriptionXenstore: 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.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, Mageia, GitHub advisories/code/issues, web search, more)
ReferencesDSA-5272-1

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
xen (PTS)buster, buster (security)4.11.4+107-gef32c7afa2-1vulnerable
bullseye4.14.5+24-g87d90d511c-1vulnerable
bullseye (security)4.14.5+86-g1c354767d5-1fixed
bookworm, sid4.16.2+90-g0d39a6d1ae-1fixed

The information below is based on the following data on fixed versions.

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
xensourcebuster(unfixed)end-of-life
xensourcebullseye4.14.5+86-g1c354767d5-1DSA-5272-1
xensource(unstable)4.16.2+90-g0d39a6d1ae-1

Notes

[buster] - xen <end-of-life> (DSA 4677-1)
https://xenbits.xen.org/xsa/advisory-416.html

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