CVE-2021-28706: xen vulnerability
Xen · xen
Vendor fix available · Affected: xen · Exploitation: possible (1 to 10%)
Not in CyberSIXT coverage yet: no article names this CVE. This page shows the public record.
Higher than 83% of scored CVEs
Not scored yet. The CVE record carries no CVSS score.
DescriptionCVE.org
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.
Affected products4
From the CVE record. A product or version that is not listed is unknown, not unaffected.
- Xen · xen4.12.x
- Xen · xen4.14.x
- Xen · xenxen-unstable
- Xen · xen4.13.x
On the Atlas
Every published CVE is on the CyberSIXT Atlas, grouped by weakness, vendor and month.
- Exploitation
- Possible (1 to 10%). EPSS between 1% and 10%.
- CISA KEV
- Not listed
- Public check
- No public nuclei template
- Vendor
- Xen
- Published
- November 2021
CoverageNo articles yet
No CyberSIXT article names CVE-2021-28706 yet, so there is no coverage timeline, action brief or change log for it. Everything on this page comes from the public CVE record, CISA KEV, EPSS and the nuclei template index. Search the archive or see the CVEs in the news.