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Fencer Intel
medium 4.0

CVE-2011-2511 json

Integer overflow in libvirt before 0.9.3 allows remote authenticated users to cause a denial of service (libvirtd crash) and possibly execu…

published 2011-08-10 15 y ago modified 2026-06-16 4 mo ago also EUVD-2011-2496

cvss
4.0
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
3.5%
EPSS 3.5% chance of exploitation in 30 days, percentile 89%
public exploits
0
none known

Summary

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.

Patch / fix

  • libvirt Debian 14, Debian 13, Debian 12 0.9.2-7

debian advisories DEBIAN-CVE-2011-2511

  • libvirt RHEL 6 0.8.7-18.el6_1.1
  • libvirt-client RHEL 6 0.8.7-18.el6_1.1
  • libvirt-python RHEL 6 0.8.7-18.el6_1.1
  • libvirt RHEL 5 VIRTUALIZATION 0.8.2-22.el5
  • libvirt-python RHEL 5 VIRTUALIZATION 0.8.2-22.el5

red hat advisories RHSA-2011:1197RHSA-2011:1019

  • libvirt openSUSE Tumbleweed 2.5.0-1.1

opensuse advisories openSUSE-SU-2024:10209-1

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2011-2511 updated cvss 3.3

libvirt: integer overflow in VirDomainGetVcpus

  • Red Hat Enterprise Linux 5 libvirt
    affected: no fix available
  • Red Hat Enterprise Linux Desktop Multi OS (v. 5 client) libvirt 0.8.2-22.el5, libvirt-python 0.8.2-22.el5
    fixed: vendor fix RHSA-2011:1019
  • Red Hat Enterprise Linux Server (v. 6) libvirt 0.8.7-18.el6_1.1, libvirt-client 0.8.7-18.el6_1.1, libvirt-python 0.8.7-18.el6_1.1
    fixed: vendor fix RHSA-2011:1197
  • Red Hat Enterprise Linux Virtualization (v. 5 server) libvirt 0.8.2-22.el5, libvirt-python 0.8.2-22.el5
    fixed: vendor fix RHSA-2011:1019

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

3.54% chance of exploitation in the next 30 days, higher than 89% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
NVD 2.0 4.0 AV:N/AC:L/Au:S/C:N/I:N/A:P

Classification

Weakness

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.