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CVE-2011-4611

17
FAUCET Score

CVE-2011-4611 describes an integer overflow in the Linux kernel's perf_event_interrupt function (arch/powerpc/kernel/perf_event.c) affecting PowerPC platforms running kernel versions prior to 2.6.39. This vulnerability allows a local attacker to trigger an unhandled performance monitor exception, leading to a denial of service. With a CVSS score of 4.9, it is considered a low-severity vulnerability, requiring local access and having a high impact on availability. There is no evidence of active exploitation, publicly available exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
< 2.6.39CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

4.9MEDIUM

AV:L/AC:L/Au:N/C:N/I:N/A:C

Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
COMPLETE
Access Vector
LOCAL
Access Complexity
LOW
Authentication
NONE
Exploitability Score
3.9
Impact Score
6.9
CvssVersion
2.0

Exploit Intelligence

EPSS Score
0.40%
Probability of exploitation in next 30 days
EPSS Percentile
32.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0040 is in the 59th percentile among its peer group of 3,049 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

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

Remediation

Patch Available

Vendor Patches (2)

github_advisorypatch availablevia nvd_reference
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: kernel-0:2.6.32-220.7.1.el6
View patch

Vendor Advisories (1)

redhatCVE-2011-4611Moderate

kernel: perf, powerpc: Handle events that raise an exception without overflowing

Mar 16, 2011

References

ftp.osuosl.org / pub/linux/kernel/v2.6/ChangeLog-2.6.39
Broken Link
git.kernel.org
bugzilla.redhat.com / show_bug.cgi
Issue TrackingThird Party Advisory
github.com / torvalds/linux/commit/0837e3242c73566fc1c0196b4ec61779c25ffc93
PatchThird Party Advisory
openwall.com / lists/oss-security/2011/12/15/2
Mailing ListThird Party Advisory