| Name | CVE-2021-28700 |
| Description | xen/arm: No memory limit for dom0less domUs The dom0less feature allows an administrator to create multiple unprivileged domains directly from Xen. Unfortunately, the memory limit from them is not set. This allow a domain to allocate memory beyond what an administrator originally configured. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, Mageia, GitHub code/issues, web search, more) |
| References | DSA-4977-1 |
| NVD severity | medium |
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|---|---|---|
| xen (PTS) | stretch (security), stretch | 4.8.5.final+shim4.10.4-1+deb9u12 | fixed |
| buster | 4.11.4+99-g8bce4698f6-1 | fixed | |
| buster (security) | 4.11.4+107-gef32c7afa2-1 | fixed | |
| bullseye | 4.14.2+25-gb6a8c4f72d-2 | vulnerable | |
| bullseye (security) | 4.14.3-1~deb11u1 | fixed | |
| bookworm, sid | 4.14.3-1 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|---|---|---|---|---|---|
| xen | source | stretch | (not affected) | |||
| xen | source | buster | (not affected) | |||
| xen | source | bullseye | 4.14.3-1~deb11u1 | DSA-4977-1 | ||
| xen | source | (unstable) | 4.14.3-1 |
[buster] - xen <not-affected> (Only affects 4.12 and later)
[stretch] - xen <not-affected> (Only affects 4.12 and later)
https://xenbits.xen.org/xsa/advisory-383.html