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Fencer Intel
medium 5.8

CVE-2014-3633 json

The qemuDomainGetBlockIoTune function in qemu/qemu_driver.c in libvirt before 1.2.9, when a disk has been hot-plugged or removed from the l…

published 2014-10-06 12 y ago modified 2026-06-17 4 mo ago also EUVD-2014-3591

cvss
5.8
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
2.8%
EPSS 2.8% chance of exploitation in 30 days, percentile 86%
public exploits
0
none known

Summary

The qemuDomainGetBlockIoTune function in qemu/qemu_driver.c in libvirt before 1.2.9, when a disk has been hot-plugged or removed from the live image, allows remote attackers to cause a denial of service (crash) or read sensitive heap information via a crafted blkiotune query, which triggers an out-of-bounds read.

Patch / fix

  • libvirt Debian 14, Debian 13, Debian 12 1.2.8-2

debian advisories DEBIAN-CVE-2014-3633

  • libvirt Ubuntu 14.04 LTS 1.2.2-0ubuntu13.1.5

ubuntu advisories UBUNTU-CVE-2014-3633

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • libvirt RHEL 6 0.10.2-46.el6_6.2
  • libvirt-client RHEL 6 0.10.2-46.el6_6.2
  • libvirt-python RHEL 6 0.10.2-46.el6_6.2
  • libvirt-lock-sanlock RHEL 6 0.10.2-46.el6_6.2
  • libvirt RHEL 7 1.1.1-29.el7_0.3
  • libvirt-client RHEL 7 1.1.1-29.el7_0.3
  • libvirt-daemon RHEL 7 1.1.1-29.el7_0.3
  • libvirt-python RHEL 7 1.1.1-29.el7_0.3

red hat advisories RHSA-2014:1873RHSA-2014:1352

  • 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-2014-3633 updated cvss 3.2

libvirt: qemu: out-of-bounds read access in qemuDomainGetBlockIoTune() due to invalid index

  • Red Hat Storage 2 libvirt
    under investigation
  • Red Hat Enterprise Linux Client (v. 7) libvirt 1.1.1-29.el7_0.3, libvirt-client 1.1.1-29.el7_0.3, libvirt-daemon 1.1.1-29.el7_0.3, libvirt-python 1.1.1-29.el7_0.3, libvirt-daemon-kvm 1.1.1-29.el7_0.3, libvirt-daemon-driver-lxc 1.1.1-29.el7_0.3, +9 more Red Hat Enterprise Linux Client Optional (v. 7) libvirt-daemon-lxc 1.1.1-29.el7_0.3, libvirt-login-shell 1.1.1-29.el7_0.3, libvirt-lock-sanlock 1.1.1-29.el7_0.3 Red Hat Enterprise Linux ComputeNode (v. 7) libvirt 1.1.1-29.el7_0.3, libvirt-client 1.1.1-29.el7_0.3 Red Hat Enterprise Linux ComputeNode Optional (v. 7) libvirt 1.1.1-29.el7_0.3, libvirt-daemon 1.1.1-29.el7_0.3, libvirt-python 1.1.1-29.el7_0.3, libvirt-daemon-kvm 1.1.1-29.el7_0.3, libvirt-daemon-lxc 1.1.1-29.el7_0.3, libvirt-login-shell 1.1.1-29.el7_0.3, +11 more
    fixed: vendor fix RHSA-2014:1352
  • Red Hat Enterprise Linux Desktop (v. 6) libvirt 0.10.2-46.el6_6.2, libvirt-client 0.10.2-46.el6_6.2, libvirt-python 0.10.2-46.el6_6.2 Red Hat Enterprise Linux Desktop Optional (v. 6) libvirt-lock-sanlock 0.10.2-46.el6_6.2 Red Hat Enterprise Linux HPC Node (v. 6) libvirt 0.10.2-46.el6_6.2, libvirt-client 0.10.2-46.el6_6.2, libvirt-python 0.10.2-46.el6_6.2 Red Hat Enterprise Linux HPC Node Optional (v. 6) libvirt-lock-sanlock 0.10.2-46.el6_6.2 Red Hat Enterprise Linux Server (v. 6) libvirt 0.10.2-46.el6_6.2, libvirt-client 0.10.2-46.el6_6.2, libvirt-python 0.10.2-46.el6_6.2
    fixed: vendor fix RHSA-2014:1873
  • Red Hat Enterprise Linux Server (v. 7) libvirt 1.1.1-29.el7_0.3, libvirt-client 1.1.1-29.el7_0.3, libvirt-daemon 1.1.1-29.el7_0.3, libvirt-python 1.1.1-29.el7_0.3, libvirt-daemon-kvm 1.1.1-29.el7_0.3, libvirt-daemon-driver-lxc 1.1.1-29.el7_0.3, +9 more
    fixed: vendor fix RHSA-2014:1352
  • Red Hat Enterprise Linux Server Optional (v. 6) libvirt-lock-sanlock 0.10.2-46.el6_6.2
    fixed: vendor fix RHSA-2014:1873
  • Red Hat Enterprise Linux Server Optional (v. 7) libvirt-daemon-lxc 1.1.1-29.el7_0.3, libvirt-login-shell 1.1.1-29.el7_0.3, libvirt-lock-sanlock 1.1.1-29.el7_0.3
    fixed: vendor fix RHSA-2014:1352
  • Red Hat Enterprise Linux Workstation (v. 6) libvirt 0.10.2-46.el6_6.2, libvirt-client 0.10.2-46.el6_6.2, libvirt-python 0.10.2-46.el6_6.2
    fixed: vendor fix RHSA-2014:1873
  • Red Hat Enterprise Linux Workstation (v. 7) libvirt 1.1.1-29.el7_0.3, libvirt-client 1.1.1-29.el7_0.3, libvirt-daemon 1.1.1-29.el7_0.3, libvirt-python 1.1.1-29.el7_0.3, libvirt-daemon-kvm 1.1.1-29.el7_0.3, libvirt-daemon-driver-lxc 1.1.1-29.el7_0.3, +9 more
    fixed: vendor fix RHSA-2014:1352
show 3 more
  • Red Hat Enterprise Linux Workstation Optional (v. 6) libvirt-lock-sanlock 0.10.2-46.el6_6.2
    fixed: vendor fix RHSA-2014:1873
  • Red Hat Enterprise Linux Workstation Optional (v. 7) libvirt-daemon-lxc 1.1.1-29.el7_0.3, libvirt-login-shell 1.1.1-29.el7_0.3, libvirt-lock-sanlock 1.1.1-29.el7_0.3
    fixed: vendor fix RHSA-2014:1352
  • Red Hat Enterprise Linux 5 libvirt
    not affected: vulnerable code not present

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

2.75% chance of exploitation in the next 30 days, higher than 86% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
NVD 2.0 5.8 AV:N/AC:M/Au:N/C:P/I:N/A:P

Classification

Weakness
  • CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer

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.