qemu: fdc: out-of-bounds fifo buffer memory access
Published May 13, 2015
7.7
HIGHCVSS 2.0
EPSS 15.28%
Description
The Floppy Disk Controller (FDC) in QEMU, as used in Xen 4.5.x and earlier and KVM, allows local guest users to cause a denial of service (out-of-bounds write and guest crash) or possibly execute arbitrary code via the (1) FD_CMD_READ_ID, (2) FD_CMD_DRIVE_SPECIFICATION_COMMAND, or other unspecified commands, aka VENOM.
Affected products
No data.
Configuration 2
- 3.0
- 4.0
- 5.0
- 6.0
- 7.0
- 5
- 6.0
- 7.0
- 4.5.0
No data.
OpenStack 4 for RHEL 6
qemu-kvm-rhev-2:0.12.1.2-2.448.el6_6.3
Fixed · RHSA-2015:1004
RHEV 3.X Hypervisor and Agents for RHEL-6
qemu-kvm-rhev-2:0.12.1.2-2.448.el6_6.3
Fixed · RHSA-2015:1001
RHEV 3.X Hypervisor and Agents for RHEL-6
rhev-hypervisor6-0:6.6-20150512.0.el6ev
Fixed · RHSA-2015:1011
RHEV 3.X Hypervisor and Agents for RHEL-7
qemu-kvm-rhev-10:2.1.2-23.el7_1.3
Fixed · RHSA-2015:1000
RHEV 3.X Hypervisor and Agents for RHEL-7
rhev-hypervisor7-0:7.1-20150512.1.el7ev
Fixed · RHSA-2015:1011
Red Hat Enterprise Linux 5
kvm-0:83-272.el5_11
Fixed · RHSA-2015:1003
Red Hat Enterprise Linux 5
xen-0:3.0.3-146.el5_11
Fixed · RHSA-2015:1002
Red Hat Enterprise Linux 6
qemu-kvm-2:0.12.1.2-2.448.el6_6.3
Fixed · RHSA-2015:0998
Red Hat Enterprise Linux 6.5 Extended Update Support
qemu-kvm-2:0.12.1.2-2.415.el6_5.15
Fixed · RHSA-2015:1031
Red Hat Enterprise Linux 7
qemu-kvm-10:1.5.3-86.el7_1.2
Fixed · RHSA-2015:0999
Red Hat Enterprise Linux OpenStack Platform 5.0 (Icehouse) for RHEL 6
qemu-kvm-rhev-2:0.12.1.2-2.448.el6_6.3
Fixed · RHSA-2015:1004
Red Hat Enterprise Linux OpenStack Platform 5.0 (Icehouse) for RHEL 7
qemu-kvm-rhev-10:2.1.2-23.el7_1.3
Fixed · RHSA-2015:1004
Red Hat Enterprise Linux OpenStack Platform 6.0 (Juno) for RHEL 7
qemu-kvm-rhev-10:2.1.2-23.el7_1.3
Fixed · RHSA-2015:1004
Red Hat Enterprise Linux 5
kvm
Affected
| Product | Package | State | Advisory |
|---|---|---|---|
| OpenStack 4 for RHEL 6 | qemu-kvm-rhev-2:0.12.1.2-2.448.el6_6.3 | Fixed | RHSA-2015:1004 |
| RHEV 3.X Hypervisor and Agents for RHEL-6 | qemu-kvm-rhev-2:0.12.1.2-2.448.el6_6.3 | Fixed | RHSA-2015:1001 |
| RHEV 3.X Hypervisor and Agents for RHEL-6 | rhev-hypervisor6-0:6.6-20150512.0.el6ev | Fixed | RHSA-2015:1011 |
| RHEV 3.X Hypervisor and Agents for RHEL-7 | qemu-kvm-rhev-10:2.1.2-23.el7_1.3 | Fixed | RHSA-2015:1000 |
| RHEV 3.X Hypervisor and Agents for RHEL-7 | rhev-hypervisor7-0:7.1-20150512.1.el7ev | Fixed | RHSA-2015:1011 |
| Red Hat Enterprise Linux 5 | kvm-0:83-272.el5_11 | Fixed | RHSA-2015:1003 |
| Red Hat Enterprise Linux 5 | xen-0:3.0.3-146.el5_11 | Fixed | RHSA-2015:1002 |
| Red Hat Enterprise Linux 6 | qemu-kvm-2:0.12.1.2-2.448.el6_6.3 | Fixed | RHSA-2015:0998 |
| Red Hat Enterprise Linux 6.5 Extended Update Support | qemu-kvm-2:0.12.1.2-2.415.el6_5.15 | Fixed | RHSA-2015:1031 |
| Red Hat Enterprise Linux 7 | qemu-kvm-10:1.5.3-86.el7_1.2 | Fixed | RHSA-2015:0999 |
| Red Hat Enterprise Linux OpenStack Platform 5.0 (Icehouse) for RHEL 6 | qemu-kvm-rhev-2:0.12.1.2-2.448.el6_6.3 | Fixed | RHSA-2015:1004 |
| Red Hat Enterprise Linux OpenStack Platform 5.0 (Icehouse) for RHEL 7 | qemu-kvm-rhev-10:2.1.2-23.el7_1.3 | Fixed | RHSA-2015:1004 |
| Red Hat Enterprise Linux OpenStack Platform 6.0 (Juno) for RHEL 7 | qemu-kvm-rhev-10:2.1.2-23.el7_1.3 | Fixed | RHSA-2015:1004 |
| Red Hat Enterprise Linux 5 | kvm | Affected | n/a |
No package ranges for this CVE.
Remediation
Red Hat statement
This issue affects the versions of the kvm and xen packages as shipped with Red Hat Enterprise Linux 5, the versions of the qemu-kvm packages as shipped with Red Hat Enterprise Linux 6 and 7, and the versions of qemu-kvm-rhev packages as shipped with Red Hat Enterprise Virtualization 3. Future updates for the respective releases will address this flaw.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
No CVSS v3.0 score for this CVE.
AV:A/AC:L/Au:S/C:C/I:C/A:C
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 (25 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 15.28% (0.15275) | 96.67th | v5 (v2026.06.15) |
| Jun 15, 2026 | 15.28% (0.15275) | 96.34th | v5 (v2026.06.15) |
| Jun 1, 2026 | 19.32% (0.19325) | 95.48th | v4 (v2025.03.14) |
| May 22, 2026 | 24.20% (0.24200) | 96.16th | v4 (v2025.03.14) |
| Apr 14, 2026 | 32.26% (0.32263) | 96.84th | v4 (v2025.03.14) |
| Apr 4, 2026 | 36.08% (0.36084) | 97.08th | v4 (v2025.03.14) |
| Feb 14, 2026 | 32.26% (0.32263) | 96.72th | v4 (v2025.03.14) |
| Dec 14, 2025 | 36.08% (0.36084) | 96.93th | v4 (v2025.03.14) |
| Nov 30, 2025 | 30.19% (0.30185) | 96.48th | v4 (v2025.03.14) |
| Oct 21, 2025 | 28.77% (0.28772) | 96.29th | v4 (v2025.03.14) |
| Aug 11, 2025 | 33.91% (0.33910) | 96.80th | v4 (v2025.03.14) |
| May 18, 2025 | 28.59% (0.28587) | 96.24th | v4 (v2025.03.14) |
| Mar 30, 2025 | 33.91% (0.33910) | 96.60th | v4 (v2025.03.14) |
| Mar 29, 2025 | 72.73% (0.72732) | 98.38th | v4 (v2025.03.14) |
| Mar 28, 2025 | 33.91% (0.33910) | 96.60th | v4 (v2025.03.14) |
| Mar 27, 2025 | 72.73% (0.72732) | 98.64th | v4 (v2025.03.14) |
| Mar 21, 2025 | 57.05% (0.57054) | 97.97th | v4 (v2025.03.14) |
| Mar 20, 2025 | 51.31% (0.51313) | 97.68th | v4 (v2025.03.14) |
| Mar 19, 2025 | 68.53% (0.68535) | 98.48th | v4 (v2025.03.14) |
| Mar 17, 2025 | 51.31% (0.51313) | 97.62th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.10% (0.00098) | 42.44th | v3 (v2023.03.01) |
| Jul 10, 2024 | 0.10% (0.00098) | 41.17th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.10% (0.00098) | 39.14th | v3 (v2023.03.01) |
| Mar 6, 2023 | 23.85% (0.23847) | 96.73th | v2 (v2022.01.01) |
| Feb 4, 2022 | 23.85% (0.23847) | 94.84th | v2 (v2022.01.01) |
References (52)
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Change history (0)
No recorded changes yet.