kernel: perf: Fix software event overflow
Published May 24, 2012
5.5
MEDIUMCVSS 3.1
EPSS 0.92%
Description
The Performance Events subsystem in the Linux kernel before 3.1 does not properly handle event overflows associated with PERF_COUNT_SW_CPU_CLOCK events, which allows local users to cause a denial of service (system hang) via a crafted application.
Affected products
No data.
- < 3.1
No data.
Red Hat Enterprise Linux 6
kernel-0:2.6.32-131.17.1.el6
Fixed · RHSA-2011:1350
Red Hat Enterprise MRG 2
kernel-rt-0:3.0.18-rt34.53.el6rt
Fixed · RHSA-2012:0333
Red Hat Enterprise Linux 4
kernel
Not affected
Red Hat Enterprise Linux 5
kernel
Not affected
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 6 | kernel-0:2.6.32-131.17.1.el6 | Fixed | RHSA-2011:1350 |
| Red Hat Enterprise MRG 2 | kernel-rt-0:3.0.18-rt34.53.el6rt | Fixed | RHSA-2012:0333 |
| Red Hat Enterprise Linux 4 | kernel | Not affected | n/a |
| Red Hat Enterprise Linux 5 | kernel | Not affected | n/a |
No package ranges for this CVE.
Remediation
Red Hat statement
This issue did not affect Red Hat Enterprise Linux 4 and 5 as they did not include support for perf. This has been addressed in Red Hat Enterprise Linux 6 and Red Hat Enterprise MRG via https://rhn.redhat.com/errata/RHSA-2011-1350.html and https://rhn.redhat.com/errata/RHSA-2012-0333.html.
Metrics
No CVSS v4.0 score for this CVE.
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
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 | 0.92% (0.00921) | 58.86th | v5 (v2026.06.15) |
| Jun 15, 2026 | 0.92% (0.00921) | 55.45th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.06% (0.00061) | 16.37th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.05% (0.00047) | 19.24th | v3 (v2023.03.01) |
| May 8, 2024 | 0.05% (0.00047) | 16.30th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.05% (0.00047) | 14.29th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.76% (0.01761) | 76.53th | v2 (v2022.01.01) |
| Feb 13, 2023 | 1.76% (0.01761) | 76.01th | v2 (v2022.01.01) |
| Feb 3, 2023 | 2.05% (0.02046) | 78.85th | v2 (v2022.01.01) |
| Aug 8, 2022 | 1.76% (0.01761) | 75.35th | v2 (v2022.01.01) |
| May 7, 2022 | 1.82% (0.01819) | 75.22th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.83% (0.01832) | 75.09th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.83% (0.01832) | 54.44th | v2 (v2022.01.01) |
References (8)
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=a8b0ca17b80e92faab46ee7179ba9e99ccb61233 x_refsource_CONFIRM
- http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.1 x_refsource_CONFIRMMailing ListPatchVendor Advisory
- http://www.openwall.com/lists/oss-security/2011/08/16/1 mailing-listx_refsource_MLISTMailing ListPatchThird Party Advisory
- https://access.redhat.com/security/cve/CVE-2011-2918 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=730706 x_refsource_CONFIRMIssue TrackingPatchThird Party Advisory
- https://github.com/torvalds/linux/commit/a8b0ca17b80e92faab46ee7179ba9e99ccb61233 x_refsource_CONFIRMPatchThird Party Advisory
- https://nvd.nist.gov/vuln/detail/CVE-2011-2918
- https://www.cve.org/CVERecord?id=CVE-2011-2918
| Link | Providers | Tags |
|---|---|---|
| http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=a8b0ca17b80e92faab46ee7179ba9e99ccb61233 | x_refsource_CONFIRM | |
| http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.1 | x_refsource_CONFIRMMailing ListPatchVendor Advisory | |
| http://www.openwall.com/lists/oss-security/2011/08/16/1 | mailing-listx_refsource_MLISTMailing ListPatchThird Party Advisory | |
| https://access.redhat.com/security/cve/CVE-2011-2918 | Vendor Advisory | |
| https://bugzilla.redhat.com/show_bug.cgi?id=730706 | x_refsource_CONFIRMIssue TrackingPatchThird Party Advisory | |
| https://github.com/torvalds/linux/commit/a8b0ca17b80e92faab46ee7179ba9e99ccb61233 | x_refsource_CONFIRMPatchThird Party Advisory | |
| https://nvd.nist.gov/vuln/detail/CVE-2011-2918 | ||
| https://www.cve.org/CVERecord?id=CVE-2011-2918 |
Change history (0)
No recorded changes yet.