| Name | CVE-2018-5244 |
| Description | In Xen 4.10, new infrastructure was introduced as part of an overhaul to how MSR emulation happens for guests. Unfortunately, one tracking structure isn't freed when a vcpu is destroyed. This allows guest OS administrators to cause a denial of service (host OS memory consumption) by rebooting many times. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|---|---|---|
| xen (PTS) | jessie, jessie (lts) | 4.4.4lts5-0+deb8u1 | fixed |
| stretch (security), stretch (lts), stretch | 4.8.5.final+shim4.10.4-1+deb9u12 | fixed | |
| buster (security), buster, buster (lts) | 4.11.4+107-gef32c7afa2-1 | fixed | |
| bullseye | 4.14.6-1 | fixed | |
| bullseye (security) | 4.14.5+94-ge49571868d-1 | fixed | |
| bookworm | 4.17.3+10-g091466ba55-1~deb12u1 | fixed | |
| sid, trixie | 4.17.3+36-g54dacb5c02-1 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|---|---|---|---|---|---|
| xen | source | (unstable) | (not affected) |
- xen <not-affected> (Only affects Xen 4.10 onwards)
https://xenbits.xen.org/xsa/advisory-253.html