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Fencer Intel
medium 5.5

CVE-2014-0148 json

Qemu before 2.0 block driver for Hyper-V VHDX Images is vulnerable to infinite loops and other potential issues when calculating BAT entrie…

published 2020-02-11 6 y ago modified 2026-06-17 4 mo ago also EUVD-2014-0207

cvss
5.5
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
0.3%
EPSS 0.3% chance of exploitation in 30 days, percentile 23%
public exploits
0
none known

Summary

Qemu before 2.0 block driver for Hyper-V VHDX Images is vulnerable to infinite loops and other potential issues when calculating BAT entries, due to missing bounds checks for block_size and logical_sector_size variables. These are used to derive other fields like 'sectors_per_block' etc. A user able to alter the Qemu disk image could ise this flaw to crash the Qemu instance resulting in DoS.

Patch / fix

  • qemu qemu 2.0.0
  • qemu Debian 14, Debian 13, Debian 12 2.0.0+dfsg-1

debian advisories DEBIAN-CVE-2014-0148

  • rhev-hypervisor6 RHEL 6 6.5-20140603.2.el6ev
  • qemu-kvm-rhev RHEL 6, openstack 4, openstack 3 2:0.12.1.2-2.415.el6_5.8
  • qemu-img-rhev RHEL 6, openstack 4, openstack 3 2:0.12.1.2-2.415.el6_5.8
  • qemu-kvm-rhev-tools RHEL 6, openstack 4, openstack 3 2:0.12.1.2-2.415.el6_5.8
  • qemu-kvm RHEL 6 2:0.12.1.2-2.415.el6_5.8
  • qemu-img RHEL 6 2:0.12.1.2-2.415.el6_5.8
  • qemu-kvm-tools RHEL 6 2:0.12.1.2-2.415.el6_5.8
  • qemu-guest-agent RHEL 6 2:0.12.1.2-2.415.el6_5.8

red hat advisories RHSA-2014:0674RHSA-2014:0435RHSA-2014:0434RHSA-2014:0421RHSA-2014:0420

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-2014-0148 updated cvss 4.7

Qemu: vhdx: bounds checking for block_size and logical_sector_size

  • Red Hat Enterprise Linux OpenStack Platform 5 (Icehouse) qemu-kvm-rhev
    affected: no fix available
  • Red Hat Enterprise Linux Desktop (v. 6) qemu-img 0.12.1.2-2.415.el6_5.8, qemu-kvm 0.12.1.2-2.415.el6_5.8, qemu-kvm-tools 0.12.1.2-2.415.el6_5.8, qemu-guest-agent 0.12.1.2-2.415.el6_5.8 Red Hat Enterprise Linux HPC Node (v. 6) qemu-img 0.12.1.2-2.415.el6_5.8, qemu-kvm 0.12.1.2-2.415.el6_5.8, qemu-kvm-tools 0.12.1.2-2.415.el6_5.8, qemu-guest-agent 0.12.1.2-2.415.el6_5.8
    fixed: vendor fix RHSA-2014:0420
  • Red Hat Enterprise Linux OpenStack Platform 3.0 qemu-img-rhev 0.12.1.2-2.415.el6_5.8, qemu-kvm-rhev 0.12.1.2-2.415.el6_5.8, qemu-kvm-rhev-tools 0.12.1.2-2.415.el6_5.8
    fixed: vendor fix RHSA-2014:0435
  • Red Hat Enterprise Linux OpenStack Platform 4.0 qemu-img-rhev 0.12.1.2-2.415.el6_5.8, qemu-kvm-rhev 0.12.1.2-2.415.el6_5.8, qemu-kvm-rhev-tools 0.12.1.2-2.415.el6_5.8
    fixed: vendor fix RHSA-2014:0434
  • Red Hat Enterprise Linux Server (v. 6) qemu-img 0.12.1.2-2.415.el6_5.8, qemu-kvm 0.12.1.2-2.415.el6_5.8, qemu-kvm-tools 0.12.1.2-2.415.el6_5.8, qemu-guest-agent 0.12.1.2-2.415.el6_5.8 Red Hat Enterprise Linux Workstation (v. 6) qemu-img 0.12.1.2-2.415.el6_5.8, qemu-kvm 0.12.1.2-2.415.el6_5.8, qemu-kvm-tools 0.12.1.2-2.415.el6_5.8, qemu-guest-agent 0.12.1.2-2.415.el6_5.8
    fixed: vendor fix RHSA-2014:0420
  • Red Hat RHEV Agents (vdsm) qemu-img-rhev 0.12.1.2-2.415.el6_5.8, qemu-kvm-rhev 0.12.1.2-2.415.el6_5.8, qemu-kvm-rhev-tools 0.12.1.2-2.415.el6_5.8
    fixed: vendor fix RHSA-2014:0421
  • Red Hat RHEV Hypervisor for RHEL-6 rhev-hypervisor6 6.5-20140603.2.el6ev
    fixed: vendor fix RHSA-2014:0674
  • Red Hat Enterprise Linux 5 kvm Red Hat Enterprise Linux 7 qemu-img, qemu-kvm, libcacard, qemu-kvm-tools, libcacard-tools, qemu-kvm-common, +1 more
    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

0.30% chance of exploitation in the next 30 days, higher than 23% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
NVD 3.1 5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Affected products

  • n/a Qemu

Classification

Weakness
  • CWE-835 Loop with Unreachable Exit Condition

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.