kernel: potential kernel deadlock when creating circular epoll file structures
Published Apr 3, 2011
4.9
MEDIUMCVSS 2.0
EPSS 0.78%
Description
fs/eventpoll.c in the Linux kernel before 2.6.38 places epoll file descriptors within other epoll data structures without properly checking for (1) closed loops or (2) deep chains, which allows local users to cause a denial of service (deadlock or stack memory consumption) via a crafted application that makes epoll_create and epoll_ctl system calls.
Affected products
No data.
- < 2.6.38
No data.
MRG for RHEL-5
kernel-rt-0:2.6.33.9-rt31.64.el5rt
Fixed · RHSA-2011:0500
Red Hat Enterprise Linux 6
kernel-0:2.6.32-131.0.15.el6
Fixed · RHSA-2011:0542
Red Hat Enterprise Linux 6.0 EUS - Server Only
kernel-0:2.6.32-71.31.1.el6
Fixed · RHSA-2011:0883
Red Hat Enterprise Linux 4
kernel
Affected
Red Hat Enterprise Linux 5
kernel
Affected
| 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 6 | kernel-0:2.6.32-131.0.15.el6 | Fixed | RHSA-2011:0542 |
| Red Hat Enterprise Linux 6.0 EUS - Server Only | kernel-0:2.6.32-71.31.1.el6 | Fixed | RHSA-2011:0883 |
| Red Hat Enterprise Linux 4 | kernel | Affected | n/a |
| Red Hat Enterprise Linux 5 | kernel | Affected | n/a |
No package ranges for this CVE.
Remediation
Red Hat statement
This issue does not affect the Linux kernel as shipped with Red Hat Enterprise Linux 4 and 5. This was addressed in Red Hat Enterprise Linux 6 and Red Hat Enterprise MRG via https://rhn.redhat.com/errata/RHSA-2011-0542.html and https://rhn.redhat.com/errata/RHSA-2011-0500.html.
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:N/I:N/A:C
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 (13 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 0.78% (0.00778) | 54.23th | v5 (v2026.06.15) |
| Jun 15, 2026 | 0.78% (0.00778) | 50.89th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.26% (0.00263) | 47.74th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.04% (0.00043) | 11.52th | v3 (v2023.03.01) |
| Jun 12, 2024 | 0.04% (0.00043) | 9.60th | v3 (v2023.03.01) |
| Jan 10, 2024 | 0.04% (0.00043) | 7.57th | v3 (v2023.03.01) |
| Nov 21, 2023 | 0.04% (0.00045) | 12.90th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.06% (0.00063) | 24.91th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.92% (0.01924) | 78.05th | v2 (v2022.01.01) |
| Feb 13, 2023 | 1.92% (0.01924) | 77.54th | v2 (v2022.01.01) |
| Feb 3, 2023 | 3.22% (0.03220) | 83.83th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.92% (0.01924) | 76.07th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.92% (0.01924) | 55.23th | v2 (v2022.01.01) |
References (9)
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=22bacca48a1755f79b7e0f192ddb9fbb7fc6e64e x_refsource_CONFIRM
- http://openwall.com/lists/oss-security/2011/03/02/1 mailing-listx_refsource_MLISTMailing ListPatchThird Party Advisory
- http://openwall.com/lists/oss-security/2011/03/02/2 mailing-listx_refsource_MLISTMailing ListPatchThird Party Advisory
- http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.38 x_refsource_CONFIRMBroken Link
- https://access.redhat.com/security/cve/CVE-2011-1082 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=681575 x_refsource_CONFIRMIssue TrackingPatchThird Party Advisory
- https://lkml.org/lkml/2011/2/5/220 mailing-listx_refsource_MLISTMailing ListPatchThird Party Advisory
- https://nvd.nist.gov/vuln/detail/CVE-2011-1082
- https://www.cve.org/CVERecord?id=CVE-2011-1082
| Link | Providers | Tags |
|---|---|---|
| http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=22bacca48a1755f79b7e0f192ddb9fbb7fc6e64e | x_refsource_CONFIRM | |
| http://openwall.com/lists/oss-security/2011/03/02/1 | mailing-listx_refsource_MLISTMailing ListPatchThird Party Advisory | |
| http://openwall.com/lists/oss-security/2011/03/02/2 | mailing-listx_refsource_MLISTMailing ListPatchThird Party Advisory | |
| http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.38 | x_refsource_CONFIRMBroken Link | |
| https://access.redhat.com/security/cve/CVE-2011-1082 | Vendor Advisory | |
| https://bugzilla.redhat.com/show_bug.cgi?id=681575 | x_refsource_CONFIRMIssue TrackingPatchThird Party Advisory | |
| https://lkml.org/lkml/2011/2/5/220 | mailing-listx_refsource_MLISTMailing ListPatchThird Party Advisory | |
| https://nvd.nist.gov/vuln/detail/CVE-2011-1082 | ||
| https://www.cve.org/CVERecord?id=CVE-2011-1082 |
Change history (0)
No recorded changes yet.