An out-of-bounds memory access flaw, leading to memory corruption or possibly an information leak, was found in QEMU's pit_ioport_read() function. A privileged guest user in a QEMU guest, which had QEMU PIT emulation enabled, could potentially, in rare cases, use this flaw to execute arbitrary code on the host with the privileges of the hosting QEMU process.
Find out more about CVE-2015-3214 from the MITRE CVE dictionary dictionary and NIST NVD.
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/.
| Base Score | 6.5 |
|---|---|
| Base Metrics | AV:A/AC:H/Au:S/C:C/I:C/A:C |
| Access Vector | Adjacent Network |
| Access Complexity | High |
| Authentication | Single |
| Confidentiality Impact | Complete |
| Integrity Impact | Complete |
| Availability Impact | Complete |
Find out more about Red Hat support for the Common Vulnerability Scoring System (CVSS).
| Platform | Errata | Release Date |
|---|---|---|
| Red Hat Virtualization 4 Management Agent for RHEL 7 Hosts (qemu-kvm-rhev) | RHSA-2015:1508 | 2015-07-27 |
| Red Hat Enterprise Linux 7 (qemu-kvm) | RHSA-2015:1507 | 2015-07-27 |
| Red Hat Enterprise Linux OpenStack Platform 6.0 (Juno) for RHEL 7 (qemu-kvm-rhev) | RHSA-2015:1512 | 2015-07-28 |
| Red Hat Enterprise Linux OpenStack Platform 5.0 (Icehouse) for RHEL 7 (qemu-kvm-rhev) | RHSA-2015:1512 | 2015-07-28 |
| Platform | Package | State |
|---|---|---|
| Red Hat Enterprise MRG 2 | kernel | Not affected |
| Red Hat Enterprise Linux OpenStack Platform 7.0 (Kilo) for RHEL 7 | qemu-kvm-rhev | Not affected |
| Red Hat Enterprise Linux OpenStack Platform 4.0 | qemu-kvm-rhev | Not affected |
| Red Hat Enterprise Linux 7 | kernel | Not affected |
| Red Hat Enterprise Linux 7 | kernel-rt | Not affected |
| Red Hat Enterprise Linux 6 | qemu-kvm | Not affected |
| Red Hat Enterprise Linux 6 | kernel | Not affected |
| Red Hat Enterprise Linux 5 | xen | Not affected |
| Red Hat Enterprise Linux 5 | kvm | Will not fix |
Vulmon