The apic_get_tmcct function in arch/x86/kvm/lapic.c in the KVM subsystem in the Linux kernel through 3.12.5 allows guest OS users to cause a denial of service (divide-by-zero error and host OS crash) via crafted modifications of the TMICT value.
The MITRE CVE dictionary describes this issue as:
Find out more about CVE-2013-6367 from the MITRE CVE dictionary dictionary and NIST NVD.
This issue did not affect the versions of Linux kernel as shipped with Red Hat Enterprise MRG 2 as they did not provide support for the KVM subsystem.
| Base Score | 5.7 |
|---|---|
| Base Metrics | AV:A/AC:M/Au:N/C:N/I:N/A:C |
| Access Vector | Adjacent Network |
| Access Complexity | Medium |
| Authentication | None |
| Confidentiality Impact | None |
| Integrity Impact | None |
| Availability Impact | Complete |
Find out more about Red Hat support for the Common Vulnerability Scoring System (CVSS).
| Platform | Errata | Release Date |
|---|---|---|
| RHEV Hypervisor for RHEL-6 (rhev-hypervisor6) | RHSA-2013:1802 | 2013-12-12 |
| Red Hat Enterprise Linux Virtualization 5 (kvm) | RHSA-2014:0163 | 2014-02-12 |
| Red Hat Enterprise Linux Extended Update Support 6.4 (kernel) | RHSA-2014:0284 | 2014-03-11 |
| Red Hat Enterprise Linux 6 (kernel) | RHSA-2013:1801 | 2013-12-12 |
| Platform | Package | State |
|---|---|---|
| Red Hat Enterprise MRG 2 | realtime-kernel | Not affected |
| Red Hat Enterprise Linux 7 | kernel | Not affected |
| Red Hat Enterprise Linux 5 | kernel | Not affected |
Vulmon