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CVE-2011-2918

The Performance Events subsystem in the Linux kernel before 3.1 does not properly handle event...

5.5 MediumPublic exploitFix available

CVE-2011-2918 is a medium vulnerability (CVSS 5.5) in Linux Kernel, published September 8, 2011. Public exploit code exists. EPSS puts the chance of exploitation in the next 30 days at 0.92%, the 60th percentile. Fixed in linux-2.6 2.6.32-35squeeze1.

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.

Attack profile

How easy it is to exploit

Attack vector
Local
Complexity
Low
Privileges needed
Low
User interaction
None

What an attacker can affect

Confidentiality
None
Integrity
None
Availability
High

Exploit likelihood

0.92%Down 0.9 points since Feb 4, 2022
90%50%10%1%

What each source reports

NVD Score used 5.5

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.

Record
CVE-2011-2918
CVSS 3.1
5.5 MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CVSS 2.0
4.9 MediumAV:L/AC:L/Au:N/C:N/I:N/A:C
Weakness
CWE-400
Updated
2026-11-02
CVE List No score

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.

Record
CVE-2011-2918
Updated
2026-11-02
EUVDEUVD-2011-2891 No score

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.

Record
EUVD-2011-2891
Updated
2026-11-03
GitHub AdvisoriesGHSA-4v9j-mhhp-7qmp 5.5

The Performance Events subsystem in the Linux kernel before 3.1 does not properly handle event...

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.

Record
GHSA-4v9j-mhhp-7qmp
CVSS 3.1
5.5 MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Weakness
CWE-400
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
linux-2.6
Debian:6.0
 before 2.6.32-35squeeze1, plus listed versions
2.6.32-302.6.32-30+m68k.52.6.32-312.6.32-31~bpo50+12.6.32-32
Show 5 moreShow less
2.6.32-332.6.32-342.6.32-34squeeze12.6.32-352.6.32-35~bpo50+1
2.6.32-35squeeze1
kernel
Red Hat:enterprise_linux:6::server
 before 0:2.6.32-131.17.1.el6
0:2.6.32-131.17.1.el6
kernel-bootwrapper
Red Hat:enterprise_linux:6::server
 before 0:2.6.32-131.17.1.el6
0:2.6.32-131.17.1.el6
kernel-debug
Red Hat:enterprise_linux:6::server
 before 0:2.6.32-131.17.1.el6
0:2.6.32-131.17.1.el6
kernel-debug-debuginfo
Red Hat:enterprise_linux:6::server
 before 0:2.6.32-131.17.1.el6
0:2.6.32-131.17.1.el6
kernel-debug-devel
Red Hat:enterprise_linux:6::server
 before 0:2.6.32-131.17.1.el6
0:2.6.32-131.17.1.el6
kernel-debuginfo
Red Hat:enterprise_linux:6::server
 before 0:2.6.32-131.17.1.el6
0:2.6.32-131.17.1.el6
kernel-debuginfo-common-i686
Red Hat:enterprise_linux:6::server
 before 0:2.6.32-131.17.1.el6
0:2.6.32-131.17.1.el6
kernel-debuginfo-common-ppc64
Red Hat:enterprise_linux:6::server
 before 0:2.6.32-131.17.1.el6
0:2.6.32-131.17.1.el6
kernel-debuginfo-common-s390x
Red Hat:enterprise_linux:6::server
 before 0:2.6.32-131.17.1.el6
0:2.6.32-131.17.1.el6
Show 25 moreShow less
Affected packages
PackageAffectedFixed
kernel-debuginfo-common-x86_64
Red Hat:enterprise_linux:6::server
 before 0:2.6.32-131.17.1.el6
0:2.6.32-131.17.1.el6
kernel-devel
Red Hat:enterprise_linux:6::server
 before 0:2.6.32-131.17.1.el6
0:2.6.32-131.17.1.el6
kernel-doc
Red Hat:enterprise_linux:6::server
 before 0:2.6.32-131.17.1.el6
0:2.6.32-131.17.1.el6
kernel-firmware
Red Hat:enterprise_linux:6::server
 before 0:2.6.32-131.17.1.el6
0:2.6.32-131.17.1.el6
kernel-headers
Red Hat:enterprise_linux:6::server
 before 0:2.6.32-131.17.1.el6
0:2.6.32-131.17.1.el6
kernel-kdump
Red Hat:enterprise_linux:6::server
 before 0:2.6.32-131.17.1.el6
0:2.6.32-131.17.1.el6
kernel-kdump-debuginfo
Red Hat:enterprise_linux:6::server
 before 0:2.6.32-131.17.1.el6
0:2.6.32-131.17.1.el6
kernel-kdump-devel
Red Hat:enterprise_linux:6::server
 before 0:2.6.32-131.17.1.el6
0:2.6.32-131.17.1.el6
perf
Red Hat:enterprise_linux:6::server
 before 0:2.6.32-131.17.1.el6
0:2.6.32-131.17.1.el6
perf-debuginfo
Red Hat:enterprise_linux:6::server
 before 0:2.6.32-131.17.1.el6
0:2.6.32-131.17.1.el6
kernel-rt
Red Hat:enterprise_mrg:2:server:el6
 before 0:3.0.18-rt34.53.el6rt
0:3.0.18-rt34.53.el6rt
kernel-rt-debug
Red Hat:enterprise_mrg:2:server:el6
 before 0:3.0.18-rt34.53.el6rt
0:3.0.18-rt34.53.el6rt
kernel-rt-debug-debuginfo
Red Hat:enterprise_mrg:2:server:el6
 before 0:3.0.18-rt34.53.el6rt
0:3.0.18-rt34.53.el6rt
kernel-rt-debug-devel
Red Hat:enterprise_mrg:2:server:el6
 before 0:3.0.18-rt34.53.el6rt
0:3.0.18-rt34.53.el6rt
kernel-rt-debuginfo
Red Hat:enterprise_mrg:2:server:el6
 before 0:3.0.18-rt34.53.el6rt
0:3.0.18-rt34.53.el6rt
kernel-rt-debuginfo-common-x86_64
Red Hat:enterprise_mrg:2:server:el6
 before 0:3.0.18-rt34.53.el6rt
0:3.0.18-rt34.53.el6rt
kernel-rt-devel
Red Hat:enterprise_mrg:2:server:el6
 before 0:3.0.18-rt34.53.el6rt
0:3.0.18-rt34.53.el6rt
kernel-rt-doc
Red Hat:enterprise_mrg:2:server:el6
 before 0:3.0.18-rt34.53.el6rt
0:3.0.18-rt34.53.el6rt
kernel-rt-firmware
Red Hat:enterprise_mrg:2:server:el6
 before 0:3.0.18-rt34.53.el6rt
0:3.0.18-rt34.53.el6rt
kernel-rt-trace
Red Hat:enterprise_mrg:2:server:el6
 before 0:3.0.18-rt34.53.el6rt
0:3.0.18-rt34.53.el6rt
kernel-rt-trace-debuginfo
Red Hat:enterprise_mrg:2:server:el6
 before 0:3.0.18-rt34.53.el6rt
0:3.0.18-rt34.53.el6rt
kernel-rt-trace-devel
Red Hat:enterprise_mrg:2:server:el6
 before 0:3.0.18-rt34.53.el6rt
0:3.0.18-rt34.53.el6rt
kernel-rt-vanilla
Red Hat:enterprise_mrg:2:server:el6
 before 0:3.0.18-rt34.53.el6rt
0:3.0.18-rt34.53.el6rt
kernel-rt-vanilla-debuginfo
Red Hat:enterprise_mrg:2:server:el6
 before 0:3.0.18-rt34.53.el6rt
0:3.0.18-rt34.53.el6rt
kernel-rt-vanilla-devel
Red Hat:enterprise_mrg:2:server:el6
 before 0:3.0.18-rt34.53.el6rt
0:3.0.18-rt34.53.el6rt

Public exploits

Links only. Every CVE stores no exploit code.

Public exploits
SourceLinkDate
Exploit-DBLinux Kernel 3.0.0 - 'perf_count_sw_cpu_clock' event Denial of Service2011-09-01

History

History
WhenChangedSources
2026-11-03aliasesEUVD
2026-11-02createdCVE List, Exploit-DB, GitHub Advisories, NVD, OSV

References

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