| Name | CVE-2020-14339 |
| Description | A flaw was found in libvirt, where it leaked a file descriptor for `/dev/mapper/control` into the QEMU process. This file descriptor allows for privileged operations to happen against the device-mapper on the host. This flaw allows a malicious guest user or process to perform operations outside of their standard permissions, potentially causing serious damage to the host operating system. The highest threat from this vulnerability is to confidentiality, integrity, as well as system availability. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
| Debian Bugs | 966563 |
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|---|---|---|
| libvirt (PTS) | buster | 5.0.0-4+deb10u1 | fixed |
| buster (security) | 5.0.0-4+deb10u2 | fixed | |
| bullseye | 7.0.0-3+deb11u2 | fixed | |
| bookworm | 9.0.0-4 | fixed | |
| trixie | 10.0.0-2 | fixed | |
| sid | 10.2.0-1 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|---|---|---|---|---|---|
| libvirt | source | stretch | (not affected) | |||
| libvirt | source | buster | (not affected) | |||
| libvirt | source | (unstable) | 6.6.0-1 | 966563 |
[buster] - libvirt <not-affected> (Vulnerable code introduced later)
[stretch] - libvirt <not-affected> (Vulnerable code introduced later)
https://bugzilla.redhat.com/show_bug.cgi?id=1860069
https://www.redhat.com/archives/libvir-list/2020-July/msg01500.html
Proposed patch: https://www.redhat.com/archives/libvir-list/2020-July/msg01501.html
https://libvirt.org/git/?p=libvirt.git;a=commit;h=22494556542c676d1b9e7f1c1f2ea13ac17e1e3e (v6.6.0)