| Name | CVE-2017-15596 | 
| Description | An issue was discovered in Xen 4.4.x through 4.9.x allowing ARM guest OS users to cause a denial of service (prevent physical CPU usage) because of lock mishandling upon detection of an add-to-physmap error. | 
| Source | CVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) | 
| References | DSA-3969-1 | 
Vulnerable and fixed packages
The table below lists information on source packages.
| Source Package | Release | Version | Status | 
|---|
| xen (PTS) | bullseye | 4.14.6-1 | fixed | 
|  | bullseye (security) | 4.14.5+94-ge49571868d-1 | fixed | 
|  | bookworm | 4.17.5+23-ga4e5191dc0-1+deb12u1 | fixed | 
|  | bookworm (security) | 4.17.5+23-ga4e5191dc0-1 | fixed | 
|  | forky, sid, trixie | 4.20.0+68-g35cb38b222-1 | fixed | 
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs | 
|---|
| xen | source | wheezy | (not affected) |  |  |  | 
| xen | source | jessie | 4.4.1-9+deb8u10 |  | DSA-3969-1 |  | 
| xen | source | stretch | 4.8.1-1+deb9u3 |  | DSA-3969-1 |  | 
| xen | source | (unstable) | 4.8.1-1+deb9u3 |  |  |  | 
Notes
[wheezy] - xen <not-affected> (No arm support in Wheezy)
https://xenbits.xen.org/xsa/advisory-235.html