| Name | CVE-2015-4164 |
| Description | The compat_iret function in Xen 3.1 through 4.5 iterates the wrong way through a loop, which allows local 32-bit PV guest administrators to cause a denial of service (large loop and system hang) via a hypercall_iret call with EFLAGS.VM set. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
| References | DSA-3286-1 |
| Debian Bugs | 795721 |
Vulnerable and fixed packages
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|
| xen (PTS) | buster, buster (security) | 4.11.4+107-gef32c7afa2-1 | fixed |
| bullseye (security), bullseye | 4.14.5+94-ge49571868d-1 | fixed |
| bookworm | 4.17.1+2-gb773c48e36-1 | fixed |
| sid, trixie | 4.17.2-1 | 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 | (unfixed) | end-of-life | | |
| xen | source | wheezy | 4.1.4-3+deb7u8 | | DSA-3286-1 | |
| xen | source | jessie | 4.4.1-9+deb8u1 | | DSA-3286-1 | |
| xen | source | (unstable) | 4.6.0-1 | | | 795721 |
Notes
[squeeze] - xen <end-of-life> (Not supported in Squeeze LTS)
http://xenbits.xen.org/xsa/advisory-136.html