Description
Race condition in the virNetServerClientStartKeepAlive function in libvirt before 1.2.1 allows remote attackers to cause a denial of service (libvirtd crash) by closing a connection before a keepalive response is sent.
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | libvirt | 1.2.1-1 | — |
| Debian 13 | libvirt | 1.2.1-1 | — |
| Debian 12 | libvirt | 1.2.1-1 | — |
| Debian 7 | libvirt | 0.9.12.3-1 | DSA-2846-1 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 6 | libvirt +4 | 0.10.2-29.el6_5.3 | RHSA-2014:0103 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | libvirt | 2.5.0-1.1 | openSUSE-SU-2024:10209-1 |
Public exploits
Exploit or proof-of-concept code for this vulnerability is publicly available, which lowers the bar for attackers. Treat it as a reason to patch sooner.
GitHub 1 repository
-
tagatac/libvirt-CVE-2014-1447 ★ 0 · Jan 24, 2015
Libvirt - Unauthenticated DoS Vulnerability (Exploit & Time Randomization to Thwart It)
Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.
Advisories 3
- RHSA-2014:0103 Red Hat Security Advisory: libvirt security and bug fix update Red Hat Security Advisories (RHSA) · Jun 28, 2026
- DSA-2846-1 libvirt - several Debian Security (DSA / DLA) · Mar 9, 2026
- openSUSE-SU-2024:10209-1 libvirt-2.5.0-1.1 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
References
- USN-2093-1 vendor-advisory
- 56446 third-party-advisory
- DSA-2846 vendor-advisory
- http://libvirt.org/news.html
- 60895 third-party-advisory
- GLSA-201412-04 vendor-advisory
- 56321 third-party-advisory
- openSUSE-SU-2014:0268 vendor-advisory
- 1029695 vdb-entry
- RHSA-2014:0103 vendor-advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1047577
- openSUSE-SU-2014:0270 vendor-advisory