CVE-2014-0147

Qemu before 1.6.2 block diver for the various disk image formats used by Bochs and for the QCOW version 2 format, are vulnerable to a possible crash caused by signed data types or a logic error while creating QCOW2 snapshots, which leads to incorrectly calling update_refcount() routine.

Published: 2022-09-29 Last update: 2024-11-21 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2014-0147 is rated Low Risk (36.3/100): CVSS Medium severity, with low exploitation likelihood (EPSS 0.13%). Monitor for updates and reassess as exploit intelligence or EPSS changes.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2014-0147

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2025-10-01 0.15% 0.13% -0.02%
2 2025-09-30 0.05% 0.15% +0.10%
3 2025-04-03 — 0.05% —

Full EPSS history (11 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2014-0147

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
6.2 3.1 MEDIUM
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Click to expand
Attack vector (AV:L)
They already need access on the box, or another person has to do something wrong; it’s not a remote drive-by.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:N)
Doesn’t really leak secrets in a meaningful way.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 2.5 3.6 [email protected]

Weakness enumeration for CVE-2014-0147

OS Trackers for CVE-2014-0147

vendor priority summary link
debian not yet assigned CVE-2014-0147 not yet assigned priority: Debian including 1 source packages (qemu), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. https://security-tracker.debian.org/tracker/CVE-2014-0147
gentoo high CVE-2014-0147: 1 GLSA(s) (201408-17), 1 atom(s) (app-emulation/qemu); latest impact high. https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2014-0147
redhat medium — https://access.redhat.com/security/cve/CVE-2014-0147
suse medium CVE-2014-0147 severity moderate: SUSE including 293 source package names (kvm, kvm-1.4.2-0.11.1, …), 1057 product×package rows across 75 product lines (HPE Helion OpenStack 8, SUSE CaaS Platform 4.5, … (75 product lines)): Known Not Affected 727, Fixed 330. https://www.suse.com/security/cve/CVE-2014-0147/
ubuntu medium CVE-2014-0147 medium priority: Ubuntu including 2 source packages (qemu, qemu-kvm), 12 status rows across 6 suites (lucid, precise, quantal, saucy, trusty, upstream): DNE 5, released 3, ignored 2, needs-triage 1, not-affected 1. https://ubuntu.com/security/CVE-2014-0147

Affected software / configurations for CVE-2014-0147

Vendor Product Version Raw CPE
qemu qemu < 1.6.2 cpe:2.3:a:qemu:qemu:*:*:*:*:*:*:*:*
fedoraproject fedora 20 cpe:2.3:o:fedoraproject:fedora:20:*:*:*:*:*:*:*
redhat virtualization 3.0 cpe:2.3:a:redhat:virtualization:3.0:*:*:*:*:*:*:*
redhat enterprise_linux_desktop 6.0 cpe:2.3:o:redhat:enterprise_linux_desktop:6.0:*:*:*:*:*:*:*
redhat enterprise_linux_eus 6.5 cpe:2.3:o:redhat:enterprise_linux_eus:6.5:*:*:*:*:*:*:*
redhat enterprise_linux_openstack_platform 5 cpe:2.3:o:redhat:enterprise_linux_openstack_platform:5:*:*:*:*:*:*:*
redhat enterprise_linux_server 6.0 cpe:2.3:o:redhat:enterprise_linux_server:6.0:*:*:*:*:*:*:*
redhat enterprise_linux_server_aus 6.5 cpe:2.3:o:redhat:enterprise_linux_server_aus:6.5:*:*:*:*:*:*:*
redhat enterprise_linux_server_tus 6.5 cpe:2.3:o:redhat:enterprise_linux_server_tus:6.5:*:*:*:*:*:*:*
redhat enterprise_linux_workstation 6.0 cpe:2.3:o:redhat:enterprise_linux_workstation:6.0:*:*:*:*:*:*:*

References for CVE-2014-0147

cvelogic Threat Intelligence