LOW
kernel: proc: protect mm start_code/end_code in /proc/pid/stat
Published Jul 18, 2011
2.1
LOWCVSS 2.0
EPSS 0.34%
Description
The do_task_stat function in fs/proc/array.c in the Linux kernel before 2.6.39-rc1 does not perform an expected uid check, which makes it easier for local users to defeat the ASLR protection mechanism by reading the start_code and end_code fields in the /proc/#####/stat file for a process executing a PIE binary.
Affected products
No data.
OR
- ≤ 2.6.38.8
- 2.6.0
- 2.6.1
- 2.6.1
- 2.6.1
- 2.6.1
- 2.6.2
- 2.6.2
- 2.6.2
- 2.6.2
- 2.6.3
- 2.6.3
- 2.6.3
- 2.6.3
- 2.6.3
- 2.6.4
- 2.6.4
- 2.6.4
- 2.6.4
- 2.6.5
- 2.6.5
- 2.6.5
- 2.6.5
- 2.6.6
- 2.6.6
- 2.6.6
- 2.6.6
- 2.6.7
- 2.6.7
- 2.6.7
- 2.6.7
- 2.6.8
- 2.6.8
- 2.6.8
- 2.6.8
- 2.6.8
- 2.6.8.1
- 2.6.9
- 2.6.9
- 2.6.9
- 2.6.9
- 2.6.9
- 2.6.10
- 2.6.10
- 2.6.10
- 2.6.10
- 2.6.11
- 2.6.11
- 2.6.11
- 2.6.11
- 2.6.11
- 2.6.11
- 2.6.11.1
- 2.6.11.2
- 2.6.11.3
- 2.6.11.4
- 2.6.11.5
- 2.6.11.6
- 2.6.11.7
- 2.6.11.8
- 2.6.11.9
- 2.6.11.10
- 2.6.11.11
- 2.6.11.12
- 2.6.12
- 2.6.12
- 2.6.12
- 2.6.12
- 2.6.12
- 2.6.12
- 2.6.12
- 2.6.12.1
- 2.6.12.2
- 2.6.12.3
- 2.6.12.4
- 2.6.12.5
- 2.6.12.6
- 2.6.13
- 2.6.13
- 2.6.13
- 2.6.13
- 2.6.13
- 2.6.13
- 2.6.13
- 2.6.13
- 2.6.13.1
- 2.6.13.2
- 2.6.13.3
- 2.6.13.4
- 2.6.13.5
- 2.6.14
- 2.6.14
- 2.6.14
- 2.6.14
- 2.6.14
- 2.6.14
- 2.6.14.1
- 2.6.14.2
- 2.6.14.3
- 2.6.14.4
- 2.6.14.5
- 2.6.14.6
- 2.6.14.7
- 2.6.15
- 2.6.15
- 2.6.15
- 2.6.15
- 2.6.15
- 2.6.15
- 2.6.15
- 2.6.15
- 2.6.15.1
- 2.6.15.2
- 2.6.15.3
- 2.6.15.4
- 2.6.15.5
- 2.6.15.6
- 2.6.15.7
- 2.6.16
- 2.6.16
- 2.6.16
- 2.6.16
- 2.6.16
- 2.6.16
- 2.6.16
- 2.6.16.1
- 2.6.16.2
- 2.6.16.3
- 2.6.16.4
- 2.6.16.5
- 2.6.16.6
- 2.6.16.7
- 2.6.16.8
- 2.6.16.9
- 2.6.16.10
- 2.6.16.11
- 2.6.16.12
- 2.6.16.13
- 2.6.16.14
- 2.6.16.15
- 2.6.16.16
- 2.6.16.17
- 2.6.16.18
- 2.6.16.19
- 2.6.16.20
- 2.6.16.21
- 2.6.16.22
- 2.6.16.23
- 2.6.16.24
- 2.6.16.25
- 2.6.16.26
- 2.6.16.27
- 2.6.16.28
- 2.6.16.29
- 2.6.16.30
- 2.6.16.31
- 2.6.16.32
- 2.6.16.33
- 2.6.16.34
- 2.6.16.35
- 2.6.16.36
- 2.6.16.37
- 2.6.16.38
- 2.6.16.39
- 2.6.16.40
- 2.6.16.41
- 2.6.16.42
- 2.6.16.43
- 2.6.16.44
- 2.6.16.45
- 2.6.16.46
- 2.6.16.47
- 2.6.16.48
- 2.6.16.49
- 2.6.16.50
- 2.6.16.51
- 2.6.16.52
- 2.6.16.53
- 2.6.16.54
- 2.6.16.55
- 2.6.16.56
- 2.6.16.57
- 2.6.16.58
- 2.6.16.59
- 2.6.16.60
- 2.6.16.61
- 2.6.16.62
- 2.6.17
- 2.6.17
- 2.6.17
- 2.6.17
- 2.6.17
- 2.6.17
- 2.6.17
- 2.6.17.1
- 2.6.17.2
- 2.6.17.3
- 2.6.17.4
- 2.6.17.5
- 2.6.17.6
- 2.6.17.7
- 2.6.17.8
- 2.6.17.9
- 2.6.17.10
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- 2.6.17.14
- 2.6.18
- 2.6.18
- 2.6.18
- 2.6.18
- 2.6.18
- 2.6.18
- 2.6.18
- 2.6.18
- 2.6.18.1
- 2.6.18.2
- 2.6.18.3
- 2.6.18.4
- 2.6.18.5
- 2.6.18.6
- 2.6.18.7
- 2.6.18.8
- 2.6.19
- 2.6.19
- 2.6.19
- 2.6.19
- 2.6.19
- 2.6.19
- 2.6.19
- 2.6.19.1
- 2.6.19.2
- 2.6.19.3
- 2.6.19.4
- 2.6.19.5
- 2.6.19.6
- 2.6.19.7
- 2.6.20
- 2.6.20
- 2.6.20
- 2.6.20
- 2.6.20
- 2.6.20
- 2.6.20
- 2.6.20
- 2.6.20.1
- 2.6.20.2
- 2.6.20.3
- 2.6.20.4
- 2.6.20.5
- 2.6.20.6
- 2.6.20.7
- 2.6.20.8
- 2.6.20.9
- 2.6.20.10
- 2.6.20.11
- 2.6.20.12
- 2.6.20.13
- 2.6.20.14
- 2.6.20.15
- 2.6.20.16
- 2.6.20.17
- 2.6.20.18
- 2.6.20.19
- 2.6.20.20
- 2.6.20.21
- 2.6.21
- 2.6.21
- 2.6.21
- 2.6.21
- 2.6.21
- 2.6.21
- 2.6.21
- 2.6.21
- 2.6.21.1
- 2.6.21.2
- 2.6.21.3
- 2.6.21.4
- 2.6.21.5
- 2.6.21.6
- 2.6.21.7
- 2.6.22
- 2.6.22
- 2.6.22
- 2.6.22
- 2.6.22
- 2.6.22
- 2.6.22
- 2.6.22
- 2.6.22.1
- 2.6.22.2
- 2.6.22.3
- 2.6.22.4
- 2.6.22.5
- 2.6.22.6
- 2.6.22.7
- 2.6.22.8
- 2.6.22.9
- 2.6.22.10
- 2.6.22.11
- 2.6.22.12
- 2.6.22.13
- 2.6.22.14
- 2.6.22.15
- 2.6.22.16
- 2.6.22.17
- 2.6.22.18
- 2.6.22.19
- 2.6.22.20
- 2.6.22.21
- 2.6.22.22
- 2.6.23
- 2.6.23
- 2.6.23
- 2.6.23
- 2.6.23
- 2.6.23
- 2.6.23
- 2.6.23
- 2.6.23
- 2.6.23
- 2.6.23.1
- 2.6.23.2
- 2.6.23.3
- 2.6.23.4
- 2.6.23.5
- 2.6.23.6
- 2.6.23.7
- 2.6.23.8
- 2.6.23.9
- 2.6.23.10
- 2.6.23.11
- 2.6.23.12
- 2.6.23.13
- 2.6.23.14
- 2.6.23.15
- 2.6.23.16
- 2.6.23.17
- 2.6.24
- 2.6.24
- 2.6.24
- 2.6.24
- 2.6.24
- 2.6.24
- 2.6.24
- 2.6.24
- 2.6.24
- 2.6.24.1
- 2.6.24.2
- 2.6.24.3
- 2.6.24.4
- 2.6.24.5
- 2.6.24.6
- 2.6.24.7
- 2.6.25
- 2.6.25
- 2.6.25
- 2.6.25
- 2.6.25
- 2.6.25
- 2.6.25
- 2.6.25
- 2.6.25
- 2.6.25
- 2.6.25.1
- 2.6.25.2
- 2.6.25.3
- 2.6.25.4
- 2.6.25.5
- 2.6.25.6
- 2.6.25.7
- 2.6.25.8
- 2.6.25.9
- 2.6.25.10
- 2.6.25.11
- 2.6.25.12
- 2.6.25.13
- 2.6.25.14
- 2.6.25.15
- 2.6.25.16
- 2.6.25.17
- 2.6.25.18
- 2.6.25.19
- 2.6.25.20
- 2.6.26
- 2.6.26
- 2.6.26
- 2.6.26
- 2.6.26
- 2.6.26
- 2.6.26
- 2.6.26
- 2.6.26
- 2.6.26
- 2.6.26.1
- 2.6.26.2
- 2.6.26.3
- 2.6.26.4
- 2.6.26.5
- 2.6.26.6
- 2.6.26.7
- 2.6.26.8
- 2.6.27
- 2.6.27
- 2.6.27
- 2.6.27
- 2.6.27
- 2.6.27
- 2.6.27
- 2.6.27
- 2.6.27
- 2.6.27
- 2.6.27.1
- 2.6.27.2
- 2.6.27.3
- 2.6.27.4
- 2.6.27.5
- 2.6.27.6
- 2.6.27.7
- 2.6.27.8
- 2.6.27.9
- 2.6.27.10
- 2.6.27.11
- 2.6.27.12
- 2.6.27.13
- 2.6.27.14
- 2.6.27.15
- 2.6.27.16
- 2.6.27.17
- 2.6.27.18
- 2.6.27.19
- 2.6.27.20
- 2.6.27.21
- 2.6.27.22
- 2.6.27.23
- 2.6.27.24
- 2.6.27.25
- 2.6.27.26
- 2.6.27.27
- 2.6.27.28
- 2.6.27.29
- 2.6.27.30
- 2.6.27.31
- 2.6.27.32
- 2.6.27.33
- 2.6.27.34
- 2.6.27.35
- 2.6.27.36
- 2.6.27.37
- 2.6.27.38
- 2.6.27.39
- 2.6.27.40
- 2.6.27.41
- 2.6.27.42
- 2.6.27.43
- 2.6.27.44
- 2.6.27.45
- 2.6.27.46
- 2.6.27.47
- 2.6.27.48
- 2.6.27.49
- 2.6.27.50
- 2.6.27.51
- 2.6.27.52
- 2.6.27.53
- 2.6.27.54
- 2.6.27.55
- 2.6.27.56
- 2.6.27.57
- 2.6.28
- 2.6.28
- 2.6.28
- 2.6.28
- 2.6.28
- 2.6.28
- 2.6.28
- 2.6.28
- 2.6.28
- 2.6.28
- 2.6.28.1
- 2.6.28.2
- 2.6.28.3
- 2.6.28.4
- 2.6.28.5
- 2.6.28.6
- 2.6.28.7
- 2.6.28.8
- 2.6.28.9
- 2.6.28.10
- 2.6.29
- 2.6.29
- 2.6.29
- 2.6.29
- 2.6.29
- 2.6.29
- 2.6.29
- 2.6.29
- 2.6.29
- 2.6.29.1
- 2.6.29.2
- 2.6.29.3
- 2.6.29.4
- 2.6.29.5
- 2.6.29.6
- 2.6.30
- 2.6.30
- 2.6.30
- 2.6.30
- 2.6.30
- 2.6.30
- 2.6.30
- 2.6.30
- 2.6.30
- 2.6.30.1
- 2.6.30.2
- 2.6.30.3
- 2.6.30.4
- 2.6.30.5
- 2.6.30.6
- 2.6.30.7
- 2.6.30.8
- 2.6.30.9
- 2.6.30.10
- 2.6.31
- 2.6.31
- 2.6.31
- 2.6.31
- 2.6.31
- 2.6.31
- 2.6.31
- 2.6.31
- 2.6.31
- 2.6.31
- 2.6.31.1
- 2.6.31.2
- 2.6.31.3
- 2.6.31.4
- 2.6.31.5
- 2.6.31.6
- 2.6.31.7
- 2.6.31.8
- 2.6.31.9
- 2.6.31.10
- 2.6.31.11
- 2.6.31.12
- 2.6.31.13
- 2.6.31.14
- 2.6.32
- 2.6.32
- 2.6.32
- 2.6.32
- 2.6.32
- 2.6.32
- 2.6.32
- 2.6.32
- 2.6.32.1
- 2.6.32.2
- 2.6.32.3
- 2.6.32.4
- 2.6.32.5
- 2.6.32.6
- 2.6.32.7
- 2.6.32.8
- 2.6.32.9
- 2.6.32.10
- 2.6.32.11
- 2.6.32.12
- 2.6.32.13
- 2.6.32.14
- 2.6.32.15
- 2.6.32.16
- 2.6.32.17
- 2.6.32.18
- 2.6.32.19
- 2.6.32.20
- 2.6.32.21
- 2.6.32.22
- 2.6.32.23
- 2.6.32.24
- 2.6.32.25
- 2.6.32.26
- 2.6.32.27
- 2.6.33
- 2.6.33
- 2.6.33
- 2.6.33
- 2.6.33
- 2.6.33
- 2.6.33
- 2.6.33
- 2.6.33
- 2.6.33.1
- 2.6.33.2
- 2.6.33.3
- 2.6.33.4
- 2.6.33.5
- 2.6.33.6
- 2.6.33.7
- 2.6.34
- 2.6.34
- 2.6.34
- 2.6.34
- 2.6.34
- 2.6.34
- 2.6.34
- 2.6.34
- 2.6.34.1
- 2.6.34.2
- 2.6.34.3
- 2.6.34.4
- 2.6.34.5
- 2.6.34.6
- 2.6.34.7
- 2.6.35
- 2.6.35
- 2.6.35
- 2.6.35
- 2.6.35
- 2.6.35
- 2.6.35
- 2.6.35.1
- 2.6.35.2
- 2.6.35.3
- 2.6.35.4
- 2.6.35.5
- 2.6.35.6
- 2.6.35.7
- 2.6.35.8
- 2.6.35.9
- 2.6.36
- 2.6.36
- 2.6.36
- 2.6.36
- 2.6.36
- 2.6.36
- 2.6.36
- 2.6.36
- 2.6.36
- 2.6.36.1
- 2.6.36.2
- 2.6.36.3
- 2.6.36.4
- 2.6.37
- 2.6.37
- 2.6.37
- 2.6.37
- 2.6.37
- 2.6.37
- 2.6.37
- 2.6.37
- 2.6.37
- 2.6.37.1
- 2.6.37.2
- 2.6.37.3
- 2.6.37.4
- 2.6.37.5
- 2.6.37.6
- 2.6.38
- 2.6.38
- 2.6.38
- 2.6.38
- 2.6.38
- 2.6.38
- 2.6.38
- 2.6.38
- 2.6.38
- 2.6.38.1
- 2.6.38.2
- 2.6.38.3
- 2.6.38.4
- 2.6.38.5
- 2.6.38.6
- 2.6.38.7
No data.
MRG for RHEL-5
kernel-rt-0:2.6.33.9-rt31.64.el5rt
Fixed · RHSA-2011:0500
Red Hat Enterprise Linux 5
kernel-0:2.6.18-238.12.1.el5
Fixed · RHSA-2011:0833
Red Hat Enterprise Linux 6
kernel-0:2.6.32-71.29.1.el6
Fixed · RHSA-2011:0498
| Product | Package | State | Advisory |
|---|---|---|---|
| MRG for RHEL-5 | kernel-rt-0:2.6.33.9-rt31.64.el5rt | Fixed | RHSA-2011:0500 |
| Red Hat Enterprise Linux 5 | kernel-0:2.6.18-238.12.1.el5 | Fixed | RHSA-2011:0833 |
| Red Hat Enterprise Linux 6 | kernel-0:2.6.32-71.29.1.el6 | Fixed | RHSA-2011:0498 |
No package ranges for this CVE.
Remediation
Red Hat statement
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. Future kernel updates in Red Hat Enterprise Linux 5, 6 and Red Hat Enterprise MRG may address this flaw.
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.
2.1 LOW NVD
AV:L/AC:L/Au:N/C:P/I:N/A:N
Access Vector Local
Access Complexity Low
Authentication None
Confidentiality Impact Partial
Integrity Impact None
Availability Impact None
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
0.34% 0.00339
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
EPSS probability 0.00339
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 (9 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 0.34% (0.00339) | 24.93th | v5 (v2026.06.15) |
| Jun 15, 2026 | 0.34% (0.00342) | 25.79th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.09% (0.00088) | 23.11th | 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 | 1.10% (0.01104) | 54.09th | v2 (v2022.01.01) |
| Sep 17, 2022 | 1.10% (0.01104) | 52.45th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.10% (0.01104) | 50.41th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.10% (0.01104) | 28.85th | v2 (v2022.01.01) |
Weaknesses (1)
References (11)
- http://downloads.avaya.com/css/P8/documents/100145416 x_refsource_CONFIRM
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=5883f57ca0008ffc93e09cbb9847a1928e50c6f3 x_refsource_CONFIRM
- http://rhn.redhat.com/errata/RHSA-2011-0833.html vendor-advisoryx_refsource_REDHAT
- http://www.kernel.org/pub/linux/kernel/v2.6/testing/v2.6.39/ChangeLog-2.6.39-rc1 x_refsource_CONFIRM
- http://www.securityfocus.com/bid/47791 vdb-entryx_refsource_BIDPatch
- http://www.spinics.net/lists/mm-commits/msg82726.html mailing-listx_refsource_MLISTPatch
- https://access.redhat.com/security/cve/CVE-2011-0726 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=684569 x_refsource_CONFIRMIssue Tracking
- https://lkml.org/lkml/2011/3/11/380 mailing-listx_refsource_MLISTPatch
- https://nvd.nist.gov/vuln/detail/CVE-2011-0726
- https://www.cve.org/CVERecord?id=CVE-2011-0726
| Link | Providers | Tags |
|---|---|---|
| http://downloads.avaya.com/css/P8/documents/100145416 | x_refsource_CONFIRM | |
| http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=5883f57ca0008ffc93e09cbb9847a1928e50c6f3 | x_refsource_CONFIRM | |
| http://rhn.redhat.com/errata/RHSA-2011-0833.html | vendor-advisoryx_refsource_REDHAT | |
| http://www.kernel.org/pub/linux/kernel/v2.6/testing/v2.6.39/ChangeLog-2.6.39-rc1 | x_refsource_CONFIRM | |
| http://www.securityfocus.com/bid/47791 | vdb-entryx_refsource_BIDPatch | |
| http://www.spinics.net/lists/mm-commits/msg82726.html | mailing-listx_refsource_MLISTPatch | |
| https://access.redhat.com/security/cve/CVE-2011-0726 | Vendor Advisory | |
| https://bugzilla.redhat.com/show_bug.cgi?id=684569 | x_refsource_CONFIRMIssue Tracking | |
| https://lkml.org/lkml/2011/3/11/380 | mailing-listx_refsource_MLISTPatch | |
| https://nvd.nist.gov/vuln/detail/CVE-2011-0726 | ||
| https://www.cve.org/CVERecord?id=CVE-2011-0726 |
Change history (0)
No recorded changes yet.
Sources
CVE.org / MITRE
Status PUBLISHED
Assigner canonical
Published Jul 18, 2011
Updated Aug 6, 2024
Reserved Feb 1, 2011
Link CVE-2011-0726
CISA Vulnrichment
Updated n/a