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CVE Database

CVE-2011-4127

Impact: Important
Public: 2011-12-22
CWE: CWE-284
Bugzilla: 752375: CVE-2011-4127 kernel: possible privilege escalation via SG_IO ioctl

Details

The MITRE CVE dictionary describes this issue as:

The Linux kernel before 3.2.2 does not properly restrict SG_IO ioctl calls, which allows local users to bypass intended restrictions on disk read and write operations by sending a SCSI command to (1) a partition block device or (2) an LVM volume.

Find out more about CVE-2011-4127 from the MITRE CVE dictionary and NIST NVD.

Statement

This issue affects the Linux kernel as shipped with Red Hat Enterprise Linux 4,
5, 6, and Red Hat Enterprise MRG. This has been addressed in Red Hat Enterprise Linux 5, 6, and Red Hat Enterprise MRG via https://rhn.redhat.com/errata/RHSA-2012-0107.html, https://rhn.redhat.com/errata/RHSA-2011-1849.html, and https://rhn.redhat.com/errata/RHSA-2012-0333.html. Red Hat Enterprise Linux 4 is now in Production 3 of the maintenance life-cycle, https://access.redhat.com/support/policy/updates/errata/, therefore the fix for this issue is not currently planned to be included in the future updates.

CVSS v2 metrics

Base Score: 7.4
Base Metrics: AV:A/AC:M/Au:S/C:C/I:C/A:C
Access Vector: Adjacent Network
Access Complexity: Medium
Authentication: Single Instance
Confidentiality Impact: Complete
Integrity Impact: Complete
Availability Impact: Complete

Find out more about Red Hat support for the Common Vulnerability Scoring System (CVSS).

Red Hat security errata

Platform Errata Release Date
MRG Grid for RHEL 6 Server v.2 (kernel-rt) RHSA-2012:0333 February 23, 2012
RHEV Hypervisor for RHEL-6 (rhev-hypervisor6) RHSA-2011:1850 December 22, 2011
Red Hat Enterprise Linux EUS (v. 5.6 server) (kernel) RHSA-2012:0358 March 06, 2012
Red Hat Enterprise Linux version 5 (kernel) RHSA-2012:0107 February 09, 2012
Red Hat Enterprise Linux version 6 (kernel) RHSA-2011:1849 December 22, 2011

External References

This page is generated automatically and has not been checked for errors or omissions.

For clarification or corrections please contact the Red Hat Security Response Team.