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CVE-2013-2094

90
FAUCET Score

CVE-2013-2094 is a local privilege escalation vulnerability affecting the Linux kernel before version 3.8.9, specifically within the perf_swevent_init function. This flaw, due to an incorrect integer data type, allows local users to gain elevated privileges through a crafted perf_event_open system call. Rated with a high CVSS score of 8.4, this vulnerability is easily exploitable locally with low attack complexity, leading to complete compromise of confidentiality, integrity, and availability. Its high EPSS score and perfect FAUCET Risk Score further underscore its critical severity. This CVE is actively exploited in the wild, as confirmed by its inclusion in the KEV catalog, and multiple public exploits are available on ExploitDB. It has garnered significant community attention, with numerous discussions and media coverage, highlighting its historical impact and continued relevance.

Impacted Technologies

VendorProductVersion(s)CPE
< 3.0.75CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
>= 3.1, < 3.2.45CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
>= 3.3, < 3.4.42CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
>= 3.5, < 3.8.9CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

7.2HIGH

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

Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
Access Vector
LOCAL
Access Complexity
LOW
Authentication
NONE
Exploitability Score
3.9
Impact Score
10.0
CvssVersion
2.0

Exploit Intelligence

EPSS Score
47.71%
Probability of exploitation in next 30 days
EPSS Percentile
98.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
Added to KEV · Sep 15, 2022
ExploitDB: EDB-33589 · May 31, 2014
This CVE's current EPSS score of 0.4771 is in the 100th percentile among its peer group of 3,241 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.5 GitHub mentions.

Media Mentions

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 (22)

applepatch availablevia llm_extracted
Fixed in: 2.6.32-100
boschpatch availablevia llm_extracted
Fixed in: 2.6.32-100
ciscopatch availablevia llm_extracted
Fixed in: 2.6.32-100
langfusepatch availablevia llm_extracted
Fixed in: 2.6.32-100
microsoftpatch availablevia msrc
Product: cbl2 kernel 5.15.148.2-2 on CBL Mariner 2.0Fixed in: 5.15.153.1-1
microsoftpatch availablevia msrc
Product: 19793-17086Fixed in: 5.15.153.1-1
microsoftpatch availablevia msrc
Product: 16839-17084Fixed in: 6.6.22.1-2
microsoftpatch availablevia msrc
Product: 20062-17084Fixed in: 6.6.22.1-2
microsoftpatch availablevia msrc
Product: cbl2 kernel 5.15.153.1-1 on CBL Mariner 2.0Fixed in: 5.15.153.1-1
microsoftpatch availablevia msrc
Product: azl3 kernel 6.6.14.1-2 on Azure Linux 3.0Fixed in: 6.6.22.1-2
microsoftpatch availablevia msrc
Product: azl3 kernel 6.6.22.1-2 on Azure Linux 3.0Fixed in: 6.6.22.1-2
microsoftpatch availablevia msrc
Product: 16838-16823Fixed in: 5.15.153.1-1
mitsubishi_electricpatch availablevia llm_extracted
Fixed in: 2.6.32-100
neutrinolabspatch availablevia llm_extracted
Fixed in: 2.6.32-100
nginxuipatch availablevia llm_extracted
Fixed in: 2.6.32-109
paloaltonetworkspatch availablevia llm_extracted
Fixed in: 2.6.32-100
pfsensepatch availablevia llm_extracted
Fixed in: 2.6.32-100
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise MRG 2Fixed in: kernel-rt-0:3.6.11.2-rt33.39.el6rt
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: kernel-0:2.6.32-358.6.2.el6
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6.1 EUS - Server OnlyFixed in: kernel-0:2.6.32-131.39.1.el6
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6.3 EUS - Server and Compute Node OnlyFixed in: kernel-0:2.6.32-279.25.2.el6
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6.2 EUS - Server and Compute Node OnlyFixed in: kernel-0:2.6.32-220.34.2.el6
View patch

Vendor Advisories (11)

nginxuillm-nginxui-4e5fb2ffb41d17c2

Proxmox VE Kernel 2.6.32-23-pve fixes CVE-2013-2094

Nov 19, 2013
paloaltonetworksllm-paloaltonetworks-992fc7926cead53f

Kernel update fixes CVE-2013-2094

Oct 1, 2013
boschllm-bosch-fb94d9478ae6e792

Kernel update fixes CVE-2013-2094

Oct 1, 2013
pfsensellm-pfsense-91a1a3ca5cdad3d4

Linux kernel vulnerability (CVE-2013-2094)

May 15, 2013
redhatCVE-2013-2094Important

kernel: perf_swevent_enabled array out-of-bound access

May 14, 2013
microsoft2013-May/CVE-2013-2094Important

The perf_swevent_init function in kernel/events/core.c in the Linux kernel before 3.8.9 uses an incorrect integer data type which allows local users to gain privileges via a crafted perf_event_open system call.

May 2, 2013
neutrinolabsllm-neutrinolabs-eec43347f693e901

pve-kernel-2.6.32 update fixes CVE-2013-2094

langfusellm-langfuse-5a49e765a6afcbac

Proxmox VE Kernel Update to Fix CVE-2013-2094

mitsubishi_electricllm-mitsubishi_electric-01412817699f25ab

Kernel update fixes CVE-2013-2094

applellm-apple-c90c762e6328139d

Kernel vulnerability fix (CVE-2013-2094)

ciscollm-cisco-b40047885f2f223e

Proxmox VE Kernel Update fixes CVE-2013-2094

References

cisa.gov / known-exploited-vulnerabilities-catalog
US Government Resource
git.kernel.org
Not Applicable
lists.centos.org / pipermail/centos-announce/2013-May/019729.html
Third Party AdvisoryVDB Entry
lists.centos.org / pipermail/centos-announce/2013-May/019733.html
Third Party AdvisoryVDB Entry
lists.opensuse.org / opensuse-security-announce/2013-05/msg00008.html
Third Party AdvisoryVDB Entry
lists.opensuse.org / opensuse-security-announce/2013-05/msg00018.html
Third Party AdvisoryVDB Entry
lists.opensuse.org / opensuse-security-announce/2013-06/msg00005.html
Third Party AdvisoryVDB Entry
lists.opensuse.org / opensuse-security-announce/2013-06/msg00009.html
Third Party AdvisoryVDB Entry
lists.opensuse.org / opensuse-security-announce/2013-06/msg00017.html
Third Party AdvisoryVDB Entry
lkml.indiana.edu / hypermail/linux/kernel/1304.1/03652.html
Third Party AdvisoryVDB Entry
lkml.indiana.edu / hypermail/linux/kernel/1304.1/03976.html
Third Party AdvisoryVDB Entry
lkml.indiana.edu / hypermail/linux/kernel/1304.1/04302.html
Third Party Advisory
news.ycombinator.com / item
Third Party Advisory
packetstormsecurity.com / files/121616/semtex.c
ExploitThird Party AdvisoryVDB Entry
rhn.redhat.com / errata/RHSA-2013-0830.html
Third Party Advisory
bugzilla.redhat.com / show_bug.cgi
Issue Tracking
github.com / torvalds/linux/commit/8176cced706b5e5d15887584150764894e94e02f
Third Party Advisory
twitter.com / djrbliss/statuses/334301992648331267
Patch
exploit-db.com / exploits/33589
Third Party AdvisoryVDB Entry
kernel.org / pub/linux/kernel/v3.x/ChangeLog-3.8.9
Not Applicable
mandriva.com / security/advisories
Mailing ListThird Party Advisory
openwall.com / lists/oss-security/2013/05/14/6
Mailing ListThird Party Advisory
osvdb.org / 93361
Broken Link
reddit.com / r/netsec/comments/1eb9iw
Third Party Advisory
ubuntu.com / usn/USN-1825-1
Third Party Advisory
ubuntu.com / usn/USN-1826-1
Third Party Advisory
ubuntu.com / usn/USN-1827-1
Third Party Advisory
ubuntu.com / usn/USN-1828-1
Third Party Advisory
ubuntu.com / usn/USN-1836-1
Third Party Advisory
ubuntu.com / usn/USN-1838-1
Third Party Advisory