Qemu: block: possible crash due signed types or logic error
Published Feb 11, 2020
6.2
MEDIUMCVSS 3.1
EPSS 0.33%
Description
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.
Affected products
- Vendor n/a Product QEMU Defaultn/a
- Version before 1.6.2StatusaffectedConstraints-
- Version
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||
|---|---|---|---|---|---|---|---|---|---|
| n/a | QEMU | n/a |
|
Configuration 2
- 20
Configuration 3
- 3.0
- 6.0
- 6.5
- 5
- 6.0
- 6.5
- 6.5
- 6.0
No data.
OpenStack 3 for RHEL 6
qemu-kvm-rhev-2:0.12.1.2-2.415.el6_5.8
Fixed · RHSA-2014:0435
OpenStack 4 for RHEL 6
qemu-kvm-rhev-2:0.12.1.2-2.415.el6_5.8
Fixed · RHSA-2014:0434
RHEV 3.X Hypervisor and Agents for RHEL-6
qemu-kvm-rhev-2:0.12.1.2-2.415.el6_5.8
Fixed · RHSA-2014:0421
RHEV 3.X Hypervisor and Agents for RHEL-6
rhev-hypervisor6-0:6.5-20140603.2.el6ev
Fixed · RHSA-2014:0674
Red Hat Enterprise Linux 6
qemu-kvm-2:0.12.1.2-2.415.el6_5.8
Fixed · RHSA-2014:0420
Red Hat Enterprise Linux 5
kvm
Will not fix
Red Hat Enterprise Linux 7
qemu-kvm
Not affected
Red Hat Enterprise Linux OpenStack Platform 5 (Icehouse)
qemu-kvm-rhev
Affected
| Product | Package | State | Advisory |
|---|---|---|---|
| OpenStack 3 for RHEL 6 | qemu-kvm-rhev-2:0.12.1.2-2.415.el6_5.8 | Fixed | RHSA-2014:0435 |
| OpenStack 4 for RHEL 6 | qemu-kvm-rhev-2:0.12.1.2-2.415.el6_5.8 | Fixed | RHSA-2014:0434 |
| RHEV 3.X Hypervisor and Agents for RHEL-6 | qemu-kvm-rhev-2:0.12.1.2-2.415.el6_5.8 | Fixed | RHSA-2014:0421 |
| RHEV 3.X Hypervisor and Agents for RHEL-6 | rhev-hypervisor6-0:6.5-20140603.2.el6ev | Fixed | RHSA-2014:0674 |
| Red Hat Enterprise Linux 6 | qemu-kvm-2:0.12.1.2-2.415.el6_5.8 | Fixed | RHSA-2014:0420 |
| Red Hat Enterprise Linux 5 | kvm | Will not fix | n/a |
| Red Hat Enterprise Linux 7 | qemu-kvm | Not affected | n/a |
| Red Hat Enterprise Linux OpenStack Platform 5 (Icehouse) | qemu-kvm-rhev | Affected | n/a |
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
No CVSS v3.0 score for this CVE.
No CVSS v2.0 score for this CVE.
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (12 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 0.33% (0.00329) | 23.61th | v5 (v2026.06.15) |
| Jun 15, 2026 | 0.33% (0.00329) | 24.43th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.04% (0.00039) | 8.72th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.13% (0.00133) | 50.05th | v3 (v2023.03.01) |
| Jun 14, 2024 | 0.13% (0.00133) | 48.59th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.13% (0.00133) | 46.56th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.11% (0.01108) | 55.18th | v2 (v2022.01.01) |
| Feb 13, 2023 | 1.11% (0.01108) | 54.62th | v2 (v2022.01.01) |
| Feb 3, 2023 | 1.54% (0.01537) | 73.85th | v2 (v2022.01.01) |
| Sep 17, 2022 | 1.11% (0.01108) | 53.57th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.11% (0.01108) | 51.54th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.11% (0.01108) | 29.61th | v2 (v2022.01.01) |
References (9)
- http://git.qemu.org/?p=qemu.git%3Ba=commitdiff%3Bh=246f65838d19db6db55bfb41117c35645a2c4789 x_refsource_MISC
- http://rhn.redhat.com/errata/RHSA-2014-0420.html x_refsource_MISCThird Party Advisory
- http://rhn.redhat.com/errata/RHSA-2014-0421.html x_refsource_MISCThird Party Advisory
- http://www.openwall.com/lists/oss-security/2014/03/26/8 x_refsource_MISCMailing ListPatchThird Party Advisory
- https://access.redhat.com/security/cve/CVE-2014-0147 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1078848 x_refsource_MISCIssue TrackingThird Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1086717 x_refsource_MISCIssue TrackingThird Party Advisory
- https://nvd.nist.gov/vuln/detail/CVE-2014-0147
- https://www.cve.org/CVERecord?id=CVE-2014-0147
| Link | Providers | Tags |
|---|---|---|
| http://git.qemu.org/?p=qemu.git%3Ba=commitdiff%3Bh=246f65838d19db6db55bfb41117c35645a2c4789 | x_refsource_MISC | |
| http://rhn.redhat.com/errata/RHSA-2014-0420.html | x_refsource_MISCThird Party Advisory | |
| http://rhn.redhat.com/errata/RHSA-2014-0421.html | x_refsource_MISCThird Party Advisory | |
| http://www.openwall.com/lists/oss-security/2014/03/26/8 | x_refsource_MISCMailing ListPatchThird Party Advisory | |
| https://access.redhat.com/security/cve/CVE-2014-0147 | Vendor Advisory | |
| https://bugzilla.redhat.com/show_bug.cgi?id=1078848 | x_refsource_MISCIssue TrackingThird Party Advisory | |
| https://bugzilla.redhat.com/show_bug.cgi?id=1086717 | x_refsource_MISCIssue TrackingThird Party Advisory | |
| https://nvd.nist.gov/vuln/detail/CVE-2014-0147 | ||
| https://www.cve.org/CVERecord?id=CVE-2014-0147 |
Change history (0)
No recorded changes yet.