CVE-2012-4542

Severity: medium (CVSS 4.6 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.3% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2013-02-28 · updated 2026-06-16
Weakness: CWE-264

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.

Affected products

Linux kernel: through 3.8.0; 3.0-rc1, 3.0-rc2, 3.0-rc3, 3.0-rc4, 3.0-rc5, 3.0-rc6 (+175)

References

http://marc.info/?l=linux-kernel&m=135903967015813&w=2
http://marc.info/?l=linux-kernel&m=135904012416042&w=2
http://rhn.redhat.com/errata/RHSA-2013-0496.html
http://rhn.redhat.com/errata/RHSA-2013-0579.html
http://rhn.redhat.com/errata/RHSA-2013-0882.html
http://rhn.redhat.com/errata/RHSA-2013-0928.html
https://bugzilla.redhat.com/show_bug.cgi?id=875360
https://oss.oracle.com/git/?p=redpatch.git%3Ba=commit%3Bh=76a274e17114abf1a77de6b651424648ce9e10c8
http://marc.info/?l=linux-kernel&m=135903967015813&w=2
http://marc.info/?l=linux-kernel&m=135904012416042&w=2
http://rhn.redhat.com/errata/RHSA-2013-0496.html
http://rhn.redhat.com/errata/RHSA-2013-0579.html

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