| Name | CVE-2017-10916 |
| Description | The vCPU context-switch implementation in Xen through 4.8.x improperly interacts with the Memory Protection Extensions (MPX) and Protection Key (PKU) features, which makes it easier for guest OS users to defeat ASLR and other protection mechanisms, aka XSA-220. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SuSE, Mageia, GitHub code/issues, web search, more) |
| NVD severity | medium (attack range: remote) |
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|---|---|---|
| xen (PTS) | wheezy | 4.1.4-3+deb7u9 | fixed |
| wheezy (security) | 4.1.6.lts1-8 | fixed | |
| jessie | 4.4.1-9+deb8u9 | fixed | |
| jessie (security) | 4.4.1-9+deb8u10 | fixed | |
| buster, sid, stretch | 4.8.1-1+deb9u1 | vulnerable | |
| stretch (security) | 4.8.1-1+deb9u3 | 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) | (unfixed) | medium | ||
| xen | source | jessie | (not affected) | |||
| xen | source | stretch | 4.8.1-1+deb9u3 | medium | ||
| xen | source | wheezy | (not affected) |
[jessie] - xen <not-affected> (Vulnerable code not present)
[wheezy] - xen <not-affected> (Vulnerable code not present)
https://xenbits.xen.org/xsa/advisory-220.html