| Name | CVE-2015-2751 | 
| Description | Xen 4.3.x, 4.4.x, and 4.5.x, when using toolstack disaggregation, allows remote domains with partial management control to cause a denial of service (host lock) via unspecified domctl operations. | 
| 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) | 
| Debian Bugs | 781620 | 
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 | squeeze | (not affected) |  |  |  | 
| xen | source | wheezy | (not affected) |  |  |  | 
| xen | source | (unstable) | 4.4.1-9 |  |  | 781620 | 
Notes
[wheezy] - xen <not-affected> (Affected functionality introduced in 4.2)
[squeeze] - xen <not-affected> (Affected functionality introduced in 4.2)
http://xenbits.xen.org/xsa/advisory-127.html