CVE-2014-0049

Description

From CVE.org

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.

Statement

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.

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 HatNVDcve.org
Base Score6.57.4N/A
Attack VectorAdjacent NetworkAdjacent NetworkN/A
Access ComplexityHighMediumN/A
AuthenticationSingleSingleN/A
Confidentiality ImpactCompleteCompleteN/A
Integrity ImpactCompleteCompleteN/A
Availability ImpactCompleteCompleteN/A

Vector

Red Hat: AV:A/AC:H/Au:S/C:C/I:C/A:C

NVD: AV:A/AC:M/Au:S/C:C/I:C/A:C

Acknowledgements

Red Hat would like to thank Lars Bull (Google) for reporting this issue.

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