CVE-2013-2094
Exploitation confirmed. First attested on 2022-09-15 by CISA-ADP, CISA KEV, GCVE · kevintel.
- Published2013-05-14
- Fixed in3.8.9 · 3.4.42 · 3.2.45 · 3.0.75
- WeaknessCWE-189
Am I affected?
Debian, Ubuntu or Red Hat sometimes backport a fix without changing the upstream version number: such a version reads « to verify », never « affected ».With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.
Description
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.
Timeline
dates in UTC- 2013-05-1420:55CVE publishedNVD
- 2022-09-15Listed as exploited by GCVEGCVE
- 2022-09-15Exploitation first reportedCISA KEV
- 2022-09-15Added to the CISA KEV catalogCISA KEV
- 2025-05-0103:55SSVC exploitation set to activeCISA-ADP
- 2026-10-2319:23First public proof of conceptPoC-in-GitHub
- 2026-10-2319:23EPSS crossed 10 %FIRST EPSS
Observed activity
isMalicious corpus · updated 2026-10-23 18:48 UTCBlock these indicators
- Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2013-2094?format=txt
- CSV export: https://api.ismalicious.com/edl/cve/CVE-2013-2094?format=csv
- TAXII collection of exploited CVEs
- The EDL and CSV take an API key on the Pro plan.
Versions per branch
NVD| Branch | Affected | Fixed in | Source |
|---|---|---|---|
| 3.x | ≥ 3.5, < 3.8.9 | 3.8.9 | NVD |
| 3.x | ≥ 3.3, < 3.4.42 | 3.4.42 | NVD |
| 3.x | ≥ 3.1, < 3.2.45 | 3.2.45 | NVD |
| 3.0 | < 3.0.75 | 3.0.75 | NVD |
as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.
Fix
- Update Linux linux kernel to 3.8.9 · 3.4.42 · 3.2.45 · 3.0.75
- CISA’s required action: Apply updates per vendor instructions.due 2022-10-06
Advisories and patches
- twitter.comPatch
Detection
read 2026-10-23 19:23 UTC- Nuclei template
- none so far ProjectDiscovery
- Exploit-DB
- no entry Exploit-DB
- Proof-of-concept repositories
- 7 repositories, unverifiedrealtalk/cve-2013-2094hiikezoe/libperf_event_exploitPashkela/CVE-2013-2094tarunyadav/fix-cve-2013-2094timhsutw/cve-2013-2094 PoC-in-GitHub
CISA Known Exploited Vulnerability
- Date Added
- 2022-09-15
- Patch Due Date
- 2022-10-06
- Ransomware Use
- Unknown
- Required Action
- Apply updates per vendor instructions.
Sources
- CISA KEVKEV entry2022-09-15
- GCVEexploitation2022-09-15
- CISA-ADPSSVC decisionactive2025-05-01
- OpenCVESSVC decisionactive—
- CISA-ADPCVSS 3.18.42025-02-04
- NVDCVSS 2.07.2read 2026-10-23
- NVDweakness (CWE)CWE-189read 2026-10-23
- FIRST EPSSEPSS score47.7 %read 2026-10-23
- PoC-in-GitHubproof of concept7read 2026-10-23
Technical details
- CVSS v3 Vector
- CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- Published
- 2013-05-14
- Last Modified
- 2026-06-16
- NVD status
- Analyzed
Frequently asked questions
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Related vulnerabilities
Same product first, then the same vendor advisory and the same publication week.