Qemu: vhdx: bounds checking for block_size and logical_sector_size
Published Feb 11, 2020
5.5
MEDIUMCVSS 3.1
EPSS 0.30%
Description
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.
Affected products
- Vendor n/a Product QEMU Defaultn/a
- Version before 2.0StatusaffectedConstraints-
- 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
- 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
Not affected
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 | Not affected | 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
Red Hat statement
This issue does not affect the versions of kvm package as shipped with Red Hat Enterprise Linux 5. This issue affects the versions of qemu-kvm package as shipped with Red Hat Enterprise Linux 6.
Metrics
No CVSS v4.0 score for this CVE.
CVSS:3.1/AV:L/AC:L/PR:L/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 (13 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 0.30% (0.00304) | 20.95th | v5 (v2026.06.15) |
| Jun 15, 2026 | 0.31% (0.00307) | 22.07th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.04% (0.00045) | 11.03th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.04% (0.00045) | 16.02th | v3 (v2023.03.01) |
| Jun 10, 2024 | 0.04% (0.00045) | 14.07th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.04% (0.00045) | 12.06th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.03% (0.01034) | 41.69th | v2 (v2022.01.01) |
| Feb 13, 2023 | 1.03% (0.01034) | 41.16th | v2 (v2022.01.01) |
| Feb 3, 2023 | 1.28% (0.01282) | 67.60th | v2 (v2022.01.01) |
| Oct 4, 2022 | 1.03% (0.01034) | 40.15th | 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=commit%3Bh=1d7678dec4761acdc43439da6ceda41a703ba1a6 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-2014-0148 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1078212 x_refsource_MISCIssue TrackingPatchThird Party Advisory
- https://lists.gnu.org/archive/html/qemu-devel/2014-03/msg04994.html x_refsource_MISCMailing ListPatchThird Party Advisory
- https://nvd.nist.gov/vuln/detail/CVE-2014-0148
- https://www.cve.org/CVERecord?id=CVE-2014-0148
| Link | Providers | Tags |
|---|---|---|
| http://git.qemu.org/?p=qemu.git%3Ba=commit%3Bh=1d7678dec4761acdc43439da6ceda41a703ba1a6 | 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-2014-0148 | Vendor Advisory | |
| https://bugzilla.redhat.com/show_bug.cgi?id=1078212 | x_refsource_MISCIssue TrackingPatchThird Party Advisory | |
| https://lists.gnu.org/archive/html/qemu-devel/2014-03/msg04994.html | x_refsource_MISCMailing ListPatchThird Party Advisory | |
| https://nvd.nist.gov/vuln/detail/CVE-2014-0148 | ||
| https://www.cve.org/CVERecord?id=CVE-2014-0148 |
Change history (0)
No recorded changes yet.