kernel: possible privilege escalation via SG_IO ioctl
Published Jul 3, 2012
4.6
MEDIUMCVSS 2.0
EPSS 0.57%
Description
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.
Affected products
No data.
Configuration 1
- 10
Configuration 2
- ≤ 3.2.1
- 3.0
- 3.0
- 3.0
- 3.0
- 3.0
- 3.0
- 3.0
- 3.0.1
- 3.0.2
- 3.0.3
- 3.0.4
- 3.0.5
- 3.0.6
- 3.0.7
- 3.0.8
- 3.0.9
- 3.0.10
- 3.0.11
- 3.0.12
- 3.0.13
- 3.0.14
- 3.0.15
- 3.0.16
- 3.0.17
- 3.0.18
- 3.0.19
- 3.0.20
- 3.0.21
- 3.0.22
- 3.0.23
- 3.0.24
- 3.0.25
- 3.0.26
- 3.0.27
- 3.0.28
- 3.0.29
- 3.0.30
- 3.0.31
- 3.0.32
- 3.0.33
- 3.0.34
- 3.1
- 3.1
- 3.1
- 3.1
- 3.1
- 3.1.1
- 3.1.2
- 3.1.3
- 3.1.4
- 3.1.5
- 3.1.6
- 3.1.7
- 3.1.8
- 3.1.9
- 3.1.10
- 3.2
No data.
RHEV 3.X Hypervisor and Agents for RHEL-6
rhev-hypervisor6-0:6.2-20111215.0.el6_2
Fixed · RHSA-2011:1850
Red Hat Enterprise Linux 5
kernel-0:2.6.18-274.18.1.el5
Fixed · RHSA-2012:0107
Red Hat Enterprise Linux 5.6 EUS - Server Only
kernel-0:2.6.18-238.35.1.el5
Fixed · RHSA-2012:0358
Red Hat Enterprise Linux 6
kernel-0:2.6.32-220.2.1.el6
Fixed · RHSA-2011:1849
Red Hat Enterprise MRG 2
kernel-rt-0:3.0.18-rt34.53.el6rt
Fixed · RHSA-2012:0333
Red Hat Enterprise Linux 4
kernel
Affected
| Product | Package | State | Advisory |
|---|---|---|---|
| RHEV 3.X Hypervisor and Agents for RHEL-6 | rhev-hypervisor6-0:6.2-20111215.0.el6_2 | Fixed | RHSA-2011:1850 |
| Red Hat Enterprise Linux 5 | kernel-0:2.6.18-274.18.1.el5 | Fixed | RHSA-2012:0107 |
| Red Hat Enterprise Linux 5.6 EUS - Server Only | kernel-0:2.6.18-238.35.1.el5 | Fixed | RHSA-2012:0358 |
| Red Hat Enterprise Linux 6 | kernel-0:2.6.32-220.2.1.el6 | Fixed | RHSA-2011:1849 |
| Red Hat Enterprise MRG 2 | kernel-rt-0:3.0.18-rt34.53.el6rt | Fixed | RHSA-2012:0333 |
| Red Hat Enterprise Linux 4 | kernel | Affected | n/a |
No package ranges for this CVE.
Remediation
Red Hat 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.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
No CVSS v3.0 score for this CVE.
AV:L/AC:L/Au:N/C:P/I:P/A:P
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (10 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 0.57% (0.00566) | 44.95th | v5 (v2026.06.15) |
| Jun 15, 2026 | 0.57% (0.00566) | 42.29th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.03% (0.00032) | 5.97th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.04% (0.00042) | 5.07th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.04% (0.00042) | 5.63th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.28% (0.01282) | 68.34th | v2 (v2022.01.01) |
| Feb 13, 2023 | 1.28% (0.01282) | 67.79th | v2 (v2022.01.01) |
| Feb 3, 2023 | 1.55% (0.01547) | 74.40th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.28% (0.01282) | 65.91th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.28% (0.01282) | 41.72th | v2 (v2022.01.01) |
References (13)
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=0bfc96cb77224736dfa35c3c555d37b3646ef35e x_refsource_CONFIRM
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=ec8013beddd717d1740cfefb1a9b900deef85462 x_refsource_CONFIRM
- http://lists.opensuse.org/opensuse-security-announce/2012-04/msg00021.html vendor-advisoryx_refsource_SUSE
- http://lists.opensuse.org/opensuse-security-announce/2015-04/msg00020.html vendor-advisoryx_refsource_SUSE
- http://secunia.com/advisories/48898 third-party-advisoryx_refsource_SECUNIA
- http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.2.2 x_refsource_CONFIRM
- http://www.openwall.com/lists/oss-security/2011/12/22/5 mailing-listx_refsource_MLIST
- https://access.redhat.com/security/cve/CVE-2011-4127 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=752375 x_refsource_CONFIRMIssue Tracking
- https://github.com/torvalds/linux/commit/0bfc96cb77224736dfa35c3c555d37b3646ef35e x_refsource_CONFIRMExploitPatch
- https://github.com/torvalds/linux/commit/ec8013beddd717d1740cfefb1a9b900deef85462 x_refsource_CONFIRMExploitPatch
- https://nvd.nist.gov/vuln/detail/CVE-2011-4127
- https://www.cve.org/CVERecord?id=CVE-2011-4127
Change history (0)
No recorded changes yet.