Buffer overflow in the complete_emulated_mmio function in arch/x86/kvm/x86.c in the Linux kernel before 3.13.6 allows guest OS users to execute arbitrary code on the host OS by leveraging a loop that triggers an invalid memory copy affecting certain cancel_work_item data.
The MITRE CVE dictionary describes this issue as:
Find out more about CVE-2014-0049 from the MITRE CVE dictionary dictionary and NIST NVD.
Not vulnerable.
This issue did not affect the versions of kvm package as shipped with Red
Hat Enterprise Linux 5 as they did not backport the upstream kvm commit
that introduced this issue.
This issue did not affect the versions of Linux kernel as shipped Red Hat
Enterprise Linux 6 as they did not backport the upstream kvm commit that
introduced this issue.
This issue did not affect the versions of Linux kernel as shipped Red Hat
Enterprise MRG as they did not provide support for the KVM subsystem.
NOTE: The following CVSS v2 metrics and score provided are preliminary and subject to review.
| 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 | Package | State |
|---|---|---|
| Red Hat Enterprise MRG 2 | realtime-kernel | Not affected |
| Red Hat Enterprise Linux 7 | kernel | Not affected |
| Red Hat Enterprise Linux 6 | kernel | Not affected |
| Red Hat Enterprise Linux 5 | kvm | Not affected |
Vulmon