CVE-2012-4542

Description

From CVE.org

block/scsi_ioctl.c in the Linux kernel through 3.8 does not properly consider the SCSI device class during authorization of SCSI commands, which allows local users to bypass intended access restrictions via an SG_IO ioctl call that leverages overlapping opcodes.

Statement

This issue does affect the Linux kernel packages as shipped with Red Hat Enterprise Linux 7. Due to the lack of upstream patches and the Moderate impact, we are not planning to address this issue in Red Hat Enterprise Linux 7.

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).

CVSS v2 Score Breakdown

Red HatNVDcve.org
Base Score4.94.6N/A
Attack VectorAdjacent NetworkLocalN/A
Access ComplexityMediumLowN/A
AuthenticationSingleNoneN/A
Confidentiality ImpactPartialPartialN/A
Integrity ImpactPartialPartialN/A
Availability ImpactPartialPartialN/A

Vector

Red Hat: AV:A/AC:M/Au:S/C:P/I:P/A:P

NVD: AV:L/AC:L/Au:N/C:P/I:P/A:P

Acknowledgements

This issue was discovered by Paolo Bonzini (Red Hat).

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