Description
Integer overflow in libvirt before 0.9.3 allows remote authenticated users to cause a denial of service (libvirtd crash) and possibly execute arbitrary code via a crafted VirDomainGetVcpus RPC call that triggers memory corruption.
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 | 0.9.2-7 | — |
| Debian 13 | libvirt | 0.9.2-7 | — |
| Debian 12 | libvirt | 0.9.2-7 | — |
| Debian 6.0 | libvirt | 0.8.3-5+squeeze2 | DSA-2280-1 |
| Debian 5.0 | libvirt | 0.4.6-10+lenny2 | DSA-2280-1 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 6 | libvirt +3 | 0.8.7-18.el6_1.1 | RHSA-2011:1197 |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Red Hat Rhel Virtualization 5 | libvirt +2 | 0.8.2-22.el5 | RHSA-2011:1019 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | libvirt | 2.5.0-1.1 | openSUSE-SU-2024:10209-1 |
Advisories 4
- RHSA-2011:1019 Red Hat Security Advisory: libvirt security, bug fix, and enhancement update Red Hat Security Advisories (RHSA) · Jun 26, 2026
- DSA-2280-1 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
- RHSA-2011:1197 Red Hat Security Advisory: libvirt security and bug fix update Red Hat Security Advisories (RHSA) · Nov 22, 2025
References
- http://libvirt.org/news.html
- libvirt-virdomaingetvcpus-bo(68271) vdb-entry
- 45441 third-party-advisory
- FEDORA-2011-9091 vendor-advisory
- 45446 third-party-advisory
- [oss-security] 20110628 CVE request: libvirt: integer overflow in VirDomainGetVcpus mailing-list
- RHSA-2011:1197 vendor-advisory
- RHSA-2011:1019 vendor-advisory
- USN-1180-1 vendor-advisory
- 45375 third-party-advisory
- [libvirt] 20110624 [PATCH 2/2] remote: protect against integer overflow mailing-list
- 1025822 vdb-entry
- DSA-2280 vendor-advisory
- SUSE-SU-2011:0837 vendor-advisory
- FEDORA-2011-9062 vendor-advisory