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CVE-2011-2918

30
FAUCET Score

CVE-2011-2918 describes a denial-of-service vulnerability in the Linux kernel's Performance Events subsystem, affecting versions prior to 3.1. Specifically, it involves improper handling of event overflows related to PERF_COUNT_SW_CPU_CLOCK events. This flaw carries a CVSS score of 5.5 (Medium), indicating a local attacker can trigger a system hang with low attack complexity and no user interaction required. While not listed on the KEV catalog and lacking significant community discussion or media coverage, a public exploit (EDB-17769) exists, demonstrating its potential for exploitation.

Impacted Technologies

VendorProductVersion(s)CPE
< 3.1CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

5.5MEDIUM

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
1.8
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.92%
Probability of exploitation in next 30 days
EPSS Percentile
56.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-24
Model: v2026.06.15
ExploitDB: EDB-17769 · Sep 1, 2011
This CVE's current EPSS score of 0.0092 is in the 96th percentile among its peer group of 15,903 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (4)

github_advisorypatch availablevia nvd_reference
View patch
redhatpatch availablevia nvd_reference
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: kernel-0:2.6.32-131.17.1.el6
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise MRG 2Fixed in: kernel-rt-0:3.0.18-rt34.53.el6rt
View patch

Vendor Advisories (1)

redhatCVE-2011-2918Moderate

kernel: perf: Fix software event overflow

Jul 22, 2011

References

git.kernel.org
bugzilla.redhat.com / show_bug.cgi
Issue TrackingPatchThird Party Advisory
github.com / torvalds/linux/commit/a8b0ca17b80e92faab46ee7179ba9e99ccb61233
PatchThird Party Advisory
kernel.org / pub/linux/kernel/v3.x/ChangeLog-3.1
Mailing ListPatchVendor Advisory
openwall.com / lists/oss-security/2011/08/16/1
Mailing ListPatchThird Party Advisory