CVE-2014-0155
Description
From CVE.org
The ioapic_deliver function in virt/kvm/ioapic.c in the Linux kernel through 3.14.1 does not properly validate the kvm_irq_delivery_to_apic return value, which allows guest OS users to cause a denial of service (host OS crash) via a crafted entry in the redirection table of an I/O APIC. NOTE: the affected code was moved to the ioapic_service function before the vulnerability was announced.
Statement
Not vulnerable.
This issue did not affect the versions of kvm package as shipped with Red Hat Enterprise Linux 5.
This issue did not affect the versions of the Linux kernel as shipped with Red Hat Enterprise Linux 6.
This issue did not affect the versions of Linux kernel as shipped with Red Hat Enterprise Linux 5 and Red Hat Enterprise MRG 2 as they did not provide support for the KVM subsystem.
Common Vulnerability Scoring System (CVSS) Score Details
Info alert:Important note
CVSS scores for open source components depend on vendor-specific factors (e.g. version or build chain). Therefore, Red Hat's score and impact rating can be different from NVD and other vendors. Red Hat remains the authoritative CVE Naming Authority (CNA) source for its products and services (see Red Hat classifications).
The following CVSS metrics and score provided are preliminary and subject to review.
CVSS v2 Score Breakdown
| Red Hat | NVD | cve.org | |
|---|---|---|---|
| Base Score | 5.5 | 5.5 | N/A |
| Attack Vector | Adjacent Network | Adjacent Network | N/A |
| Access Complexity | Low | Low | N/A |
| Authentication | Single | Single | N/A |
| Confidentiality Impact | None | None | N/A |
| Integrity Impact | None | None | N/A |
| Availability Impact | Complete | Complete | N/A |
Vector
Red Hat: AV:A/AC:L/Au:S/C:N/I:N/A:C
NVD: AV:A/AC:L/Au:S/C:N/I:N/A:C
Acknowledgements
This issue was discovered by Red Hat.
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