qemu/kvm: i8254: out-of-bounds memory access in pit_ioport_read function
Published Aug 31, 2015
6.9
MEDIUMCVSS 2.0
EPSS 1.59%
Description
The pit_ioport_read in i8254.c in the Linux kernel before 2.6.33 and QEMU before 2.3.1 does not distinguish between read lengths and write lengths, which might allow guest OS users to execute arbitrary code on the host OS by triggering use of an invalid index.
Affected products
No data.
Configuration 1
- ≤ 2.3.0
- ≤ 2.6.32
Configuration 3
- 7.0
- 8.0
Configuration 4
- < 1.0.10.33264
- < 1.0.10.33264
Configuration 5
- 5.0
- 6.0
- 3.0
- 7.1
- 7.2
- 7.3
- 7.4
- 7.5
- 7.6
- 7.7
- 7.0
- 7.1_ppc64
- 7.2_ppc64
- 7.3_ppc64
- 7.4_ppc64
- 7.5_ppc64
- 7.6_ppc64
- 7.7_ppc64
- 7.0
- 7.0
- 7.3
- 7.4
- 7.6
- 7.7
- 7.1
- 7.2
- 7.3
- 7.4
- 7.5
- 7.6
- 7.7
- 7.0
- 7.3
- 7.6
- 7.7
- 7.2
- 7.3
- 7.4
- 7.6
- 7.7
- 7.0
No data.
RHEV 3.X Hypervisor and Agents for RHEL-7
qemu-kvm-rhev-10:2.1.2-23.el7_1.6
Fixed · RHSA-2015:1508
Red Hat Enterprise Linux 7
qemu-kvm-10:1.5.3-86.el7_1.5
Fixed · RHSA-2015:1507
Red Hat Enterprise Linux OpenStack Platform 5.0 (Icehouse) for RHEL 7
qemu-kvm-rhev-10:2.1.2-23.el7_1.6
Fixed · RHSA-2015:1512
Red Hat Enterprise Linux OpenStack Platform 6.0 (Juno) for RHEL 7
qemu-kvm-rhev-10:2.1.2-23.el7_1.6
Fixed · RHSA-2015:1512
Red Hat Enterprise Linux 5
kvm
Will not fix
Red Hat Enterprise Linux 5
xen
Not affected
Red Hat Enterprise Linux 6
kernel
Not affected
Red Hat Enterprise Linux 6
qemu-kvm
Not affected
Red Hat Enterprise Linux 7
kernel
Not affected
Red Hat Enterprise Linux 7
kernel-rt
Not affected
Red Hat Enterprise Linux OpenStack Platform 7 (Kilo)
qemu-kvm-rhev
Not affected
Red Hat Enterprise MRG 2
kernel
Not affected
Red Hat OpenStack Platform 4
qemu-kvm-rhev
Not affected
| Product | Package | State | Advisory |
|---|---|---|---|
| RHEV 3.X Hypervisor and Agents for RHEL-7 | qemu-kvm-rhev-10:2.1.2-23.el7_1.6 | Fixed | RHSA-2015:1508 |
| Red Hat Enterprise Linux 7 | qemu-kvm-10:1.5.3-86.el7_1.5 | Fixed | RHSA-2015:1507 |
| Red Hat Enterprise Linux OpenStack Platform 5.0 (Icehouse) for RHEL 7 | qemu-kvm-rhev-10:2.1.2-23.el7_1.6 | Fixed | RHSA-2015:1512 |
| Red Hat Enterprise Linux OpenStack Platform 6.0 (Juno) for RHEL 7 | qemu-kvm-rhev-10:2.1.2-23.el7_1.6 | Fixed | RHSA-2015:1512 |
| Red Hat Enterprise Linux 5 | kvm | Will not fix | n/a |
| Red Hat Enterprise Linux 5 | xen | Not affected | n/a |
| Red Hat Enterprise Linux 6 | kernel | Not affected | n/a |
| Red Hat Enterprise Linux 6 | qemu-kvm | Not affected | n/a |
| Red Hat Enterprise Linux 7 | kernel | Not affected | n/a |
| Red Hat Enterprise Linux 7 | kernel-rt | Not affected | n/a |
| Red Hat Enterprise Linux OpenStack Platform 7 (Kilo) | qemu-kvm-rhev | Not affected | n/a |
| Red Hat Enterprise MRG 2 | kernel | Not affected | n/a |
| Red Hat OpenStack Platform 4 | qemu-kvm-rhev | Not affected | n/a |
No package ranges for this CVE.
Remediation
Red Hat statement
This issue does not affect the versions of the qemu and qemu-kvm packages as shipped with Red Hat Enterprise Linux 5, 6 and Red Hat Enterprise Linux 6 based versions of qemu-kvm-rhev packages as shipped with Red Hat Enterprise Virtualization 3. This issue does affect the Red Hat Enterprise Linux 7 qemu-kvm and Red Hat Enterprise Linux 7 based versions of the qemu-kvm-rhev packages as shipped with Red Hat Enterprise Virtualization 3. Future updates for the respective releases may address this flaw. Please note that by default QEMU/KVM guests use in-kernel (KVM) PIT emulation in which case the following applies: This issue does not affect the Linux kernel versions as shipped with Red Hat Enterprise Linux 5, 6, 7 and Red Hat Enterprise Linux MRG 2. This issue does affect the kvm package as shipped with Red Hat Enterprise Linux 5. Red Hat Enterprise Linux 5 is now in Production 3 Phase of the support and maintenance life cycle. This has been rated as having Moderate security impact and is not currently planned to be addressed in future updates. For additional information, refer to the Red Hat Enterprise Linux Life Cycle: https://access.redhat.com/support/policy/updates/errata/.
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:L/AC:M/Au:N/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 (11 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 1.59% (0.01594) | 74.81th | v5 (v2026.06.15) |
| Jun 15, 2026 | 1.59% (0.01594) | 72.45th | v5 (v2026.06.15) |
| Mar 17, 2025 | 1.47% (0.01470) | 79.59th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.09% (0.00089) | 39.76th | v3 (v2023.03.01) |
| Jun 22, 2024 | 0.09% (0.00089) | 38.34th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.09% (0.00089) | 36.34th | v3 (v2023.03.01) |
| Mar 6, 2023 | 7.75% (0.07751) | 93.07th | v2 (v2022.01.01) |
| Feb 13, 2023 | 7.75% (0.07751) | 92.78th | v2 (v2022.01.01) |
| Feb 3, 2023 | 9.35% (0.09345) | 94.03th | v2 (v2022.01.01) |
| Apr 1, 2022 | 7.75% (0.07751) | 92.42th | v2 (v2022.01.01) |
| Feb 4, 2022 | 7.75% (0.07751) | 81.36th | v2 (v2022.01.01) |
References (20)
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=ee73f656a604d5aa9df86a97102e4e462dd79924 x_refsource_CONFIRMPatchVendor Advisory
- http://mirror.linux.org.au/linux/kernel/v2.6/ChangeLog-2.6.33 x_refsource_CONFIRMBroken LinkVendor Advisory
- http://rhn.redhat.com/errata/RHSA-2015-1507.html vendor-advisoryx_refsource_REDHATIssue TrackingThird Party Advisory
- http://rhn.redhat.com/errata/RHSA-2015-1508.html vendor-advisoryx_refsource_REDHATIssue TrackingThird Party Advisory
- http://rhn.redhat.com/errata/RHSA-2015-1512.html vendor-advisoryx_refsource_REDHATThird Party Advisory
- http://www.debian.org/security/2015/dsa-3348 vendor-advisoryx_refsource_DEBIANIssue TrackingThird Party Advisory
- http://www.openwall.com/lists/oss-security/2015/06/25/7 mailing-listx_refsource_MLISTMailing List
- http://www.securityfocus.com/bid/75273 vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry
- http://www.securitytracker.com/id/1032598 vdb-entryx_refsource_SECTRACKThird Party AdvisoryVDB Entry
- https://access.redhat.com/security/cve/CVE-2015-3214 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1229640 x_refsource_CONFIRMIssue Tracking
- https://github.com/torvalds/linux/commit/ee73f656a604d5aa9df86a97102e4e462dd79924 x_refsource_CONFIRMPatchThird Party Advisory
- https://nvd.nist.gov/vuln/detail/CVE-2015-3214
- https://security.gentoo.org/glsa/201510-02 vendor-advisoryx_refsource_GENTOOIssue TrackingThird Party Advisory
- https://support.lenovo.com/product_security/qemu x_refsource_CONFIRMThird Party Advisory
- https://support.lenovo.com/us/en/product_security/qemu x_refsource_CONFIRMThird Party Advisory
- https://www.arista.com/en/support/advisories-notices/security-advisories/1180-security-advisory-13 x_refsource_MISCThird Party Advisory
- https://www.cve.org/CVERecord?id=CVE-2015-3214
- https://www.exploit-db.com/exploits/37990/ exploitx_refsource_EXPLOIT-DBThird Party AdvisoryVDB Entry
- https://www.mail-archive.com/qemu-devel%40nongnu.org/msg304138.html mailing-listx_refsource_MLIST
Change history (0)
No recorded changes yet.