CVE-2012-4542
kernel: block: default SCSI command filter does not accomodate commands overlap across device classes
Severity
ModerateRed Hat Product Security
CVSS 2.0
Review impact separately from score.
Published · January 24, 2013
Updated · June 27, 2026
Description
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.
CVSS score applicability
The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.
Mitigation
No mitigation is specified in collected source.
CVSS / CWE
CVSS 2.0 · 4.9AV:A/AC:M/Au:S/C:P/I:P/A:P
CWE not specified