guests 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.
CVSS Details
- CVSS 3.1 Base Score: 8.6
- CVSS 3.1 Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alpine Linux | — | Upgrade xen | Oct 1, 2024 | Nov 24, 2021 |
| Debian | — | Upgrade xen | Nov 4, 2022 | Nov 24, 2021 |
| Gentoo Linux | — | Upgrade app-emulation/xen. | Feb 5, 2024 | Nov 24, 2021 |
| Suse | — | Upgrade xen-libsUpgrade xen-tools-xendomains-wait-diskUpgrade xen-toolsUpgrade xen-tools-domuUpgrade xen-doc-htmlUpgrade xen-develUpgrade xen-libs-32bitUpgrade xen-kmp-paeUpgrade xen-kmp-defaultUpgrade xen | Nov 30, 2021 | Nov 24, 2021 |
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