A heap-based buffer overflow flaw was discovered in the QEMU emulator built with the Q35-chipset-based PC system emulator. During VM-guest migration, more data (8 bytes) is moved than the allocated memory area. A privileged guest user could use this flaw to corrupt the VM guest image, which could potentially lead to a denial of service.
Find out more about CVE-2015-8666 from the MITRE CVE dictionary dictionary and NIST NVD.
This issue does not affect the versions of the kvm and xen packages as shipped with Red Hat Enterprise Linux 5.
This issue does not affect the versions of the qemu-kvm packages as shipped with Red Hat Enterprise Linux 6, and the Red Hat Enterprise Linux 6 based versions of qemu-kvm-rhev packages as shipped with Red Hat Enterprise Virtualization 3.
This issue does not affect the versions of the qemu-kvm packages as shipped with Red Hat Enterprise Linux 7.
This issue does not affect the Red Hat Enterprise Linux 7 based versions of the qemu-kvm-rhev packages as shipped with Red Hat Enterprise Virtualization 3.
NOTE: The following CVSS v2 metrics and score provided are preliminary and subject to review.
| Base Score | 2.9 |
|---|---|
| Base Metrics | AV:A/AC:H/Au:S/C:N/I:P/A:P |
| Access Vector | Adjacent Network |
| Access Complexity | High |
| Authentication | Single |
| Confidentiality Impact | None |
| Integrity Impact | Partial |
| Availability Impact | Partial |
Find out more about Red Hat support for the Common Vulnerability Scoring System (CVSS).
| Platform | Package | State |
|---|---|---|
| Red Hat Enterprise Linux OpenStack Platform 7.0 (Kilo) for RHEL 7 | qemu-kvm-rhev | Not affected |
| Red Hat Enterprise Linux OpenStack Platform 6.0 (Juno) for RHEL 7 | qemu-kvm-rhev | Not affected |
| Red Hat Enterprise Linux OpenStack Platform 5.0 (Icehouse) | qemu-kvm-rhev | Not affected |
| Red Hat Enterprise Linux 7 | qemu-kvm | Not affected |
| Red Hat Enterprise Linux 6 | qemu-kvm | Not affected |
| Red Hat Enterprise Linux 5 | kvm | Not affected |
Vulmon