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CVE-2021-28706 Details

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NameCVE-2021-28706
StatusCandidate
Descriptionguests may exceed their designated memory limit When a guest is permitted to have close to 16TiB of memory, it may be able to issue hypercalls to increase its memory allocation beyond the administrator established limit. This is a result of a calculation done with 32-bit precision, which may overflow. It would then only be the overflowed (and hence small) number which gets compared against the established upper bound.
ReferencesDEBIAN:DSA-5017
URL: https://www.debian.org/security/2021/dsa-5017
FEDORA:FEDORA-2021-03645e9807
URL: https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/I7ZGWVVRI4XY2XSTBI3XEMWBXPDVX6OT/
MISC: https://xenbits.xenproject.org/xsa/advisory-385.txt
URL: https://xenbits.xenproject.org/xsa/advisory-385.txt
PhaseAssigned (20210318)
VotesNone (candidate not yet proposed)
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