VDB
ALPINE-CVE-2021-28706
ALPINE-CVE-2021-28706
PUBLISHED
CVSS 8.600000381469727 HIGH
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.
Risk Scores
CVSS v3.1
8.600000381469727
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Alpine:v3.12 | xen | 4.10.1-r1, 4.10.0-r3, 4.10.0-r1 |
| Alpine:v3.14 | xen | 4.14.0-r0, 4.4.1-r1, 4.4.1-r0 |
| Alpine:v3.11 | xen | 4.9.0-r6, 4.0.1-r0, 4.0.1-r1 |
| Alpine:v3.13 | xen | 0, 4.9.1-r3, 4.9.1-r2 |
| Alpine:v3.15 | xen | 4.2.2-r10, 4.2.2-r0, 4.2.1-r9 |
Timeline
- Nov 24, 2021 CVE Published
- Nov 19, 2025 CVE Updated
- Apr 30, 2026 Distribution Patch