CVE-2013-2094

CRITICALNVD 8.49.0▲
EchelonGraph scoreHIGH confidence

Score elevated to 9.0 because this CVE is listed on the CISA Known Exploited Vulnerabilities catalog (added 2022-09-15), indicating real-world exploitation has been confirmed by US federal agencies. NVD baseline CVSS 8.4 retained for reference. Confidence: HIGH.

Triggered by: CISA KEV (actively exploited)
Sources: cisa_kev, epss, ghsa, nvd
Trending — 5 sources updated this weekExploited in the wild
9.0EG
EchelonGraph verdictPatch nowTreat as an emergency — this is being exploited.
  • Actively exploited in the wild (CISA-KEV)
CISA-KEV: ExploitedEPSS PROB: 48%CVSS: 8.4Exploit: cisa kev · ssvc active · Exploit-DB (verified) · epss top5pct · public exploitExposed: 0

A fix is available — apply it.

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.

CVSS v3
8.4
EG Score
9.0(high)
EG Risk
81(Attend)
EG Risk 81/100SSVC: Attend

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity90% × 45%
Exploitation100% × 40%
Automatability0% × 15%
Action: Remediate soon — notable exploitation risk.
EPSS PROB
48%
EPSS %ILE
99%
KEV
⚠ Exploited

Published

May 14, 2013

Last Modified

April 22, 2026

Advisory Details (2)

Auto-updated May 4, 2026
No patch confirmed yet.
generic

[CentOS-announce] CESA-2013:0830 Important CentOS 6 kernel Update

http://lists.centos.org/pipermail/centos-announce/2013-May/019733.html
generic

[CentOS-announce] CentOS-6 CVE-2013-2094 Kernel Issue

http://lists.centos.org/pipermail/centos-announce/2013-May/019729.html

Patch Availability(13)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntulinux-image-3.5.0-225-omap4 (3.5.0-225.36) @ raring2026-08-21ubuntu
ubuntulinux-image-3.2.0-43-generic (3.2.0-43.68) @ precise2026-08-21ubuntu
ubuntulinux-image-3.8.0-23-generic (3.8.0-23.34~precise1) @ precise2026-08-21ubuntu
ubuntulinux-image-3.5.0-30-generic (3.5.0-30.51~precise1) @ precise2026-08-21ubuntu
ubuntulinux-image-3.2.0-1432-omap4 (3.2.0-1432.41) @ precise2026-08-21ubuntu
ubuntulinux-image-3.5.0-225-omap4 (3.5.0-225.36) @ quantal2026-08-21ubuntu
ubuntulinux-image-3.8.0-21-generic (3.8.0-21.32) @ raring2026-08-21ubuntu
ubuntulinux-image-3.5.0-30-powerpc64-smp (3.5.0-30.51) @ quantal2026-08-21ubuntu
redhatkernel-0:2.6.32-131.39.1.el62013-05-20redhat
redhatkernel-0:2.6.32-220.34.2.el62013-05-20redhat
redhatkernel-rt-0:3.6.11.2-rt33.39.el6rt2013-05-20redhat
redhatkernel-0:2.6.32-279.25.2.el62013-05-17redhat
redhatkernel-0:2.6.32-358.6.2.el62013-05-16redhat

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Affected Packages

(5 across 5 ecosystems)
Debian:11(1)
PackageVulnerable rangeFixed inDependents
linux—3.8.11-1—
Debian:12(1)
PackageVulnerable rangeFixed inDependents
linux—3.8.11-1—
Debian:13(1)
PackageVulnerable rangeFixed inDependents
linux—3.8.11-1—
Debian:14(1)
PackageVulnerable rangeFixed inDependents
linux—3.8.11-1—
Debian:7(1)
PackageVulnerable rangeFixed inDependents
linux3.2.41-2, 3.2.41-2+deb7u1, 3.2.41-2+deb7u2~bpo60+13.2.41-2+deb7u2—

All Vendor Advisories

(14)

Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.

Data Freshness Timeline

(refreshed 101× in last 7d / 371× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

Showing the most recent 100 of 1,119 total refreshes for this CVE.

  1. 2026-08-22 02:50 UTCEG score recompute
  2. 2026-08-22 02:50 UTCVendor advisory
  3. 2026-08-22 02:49 UTCGHSA enrichment
  4. 2026-08-21 23:44 UTCEPSS rescore
  5. 2026-08-21 22:46 UTCVendor advisory
  6. 2026-08-21 22:46 UTCGHSA enrichment
  7. 2026-08-21 18:43 UTCVendor advisory
  8. 2026-08-21 18:42 UTCGHSA enrichment
  9. 2026-08-21 16:49 UTCCISA KEV update
  10. 2026-08-21 14:40 UTCVendor advisory
  11. 2026-08-21 14:40 UTCGHSA enrichment
  12. 2026-08-21 10:37 UTCVendor advisory
  13. 2026-08-21 10:37 UTCGHSA enrichment
  14. 2026-08-21 06:34 UTCVendor advisory
  15. 2026-08-21 06:34 UTCGHSA enrichment
  16. 2026-08-21 02:31 UTCEG score recompute
  17. 2026-08-21 02:31 UTCVendor advisory
  18. 2026-08-21 02:31 UTCGHSA enrichment
  19. 2026-08-20 22:50 UTCEPSS rescore
  20. 2026-08-20 22:27 UTCVendor advisory
  21. 2026-08-20 22:27 UTCGHSA enrichment
  22. 2026-08-20 18:25 UTCVendor advisory
  23. 2026-08-20 18:25 UTCGHSA enrichment
  24. 2026-08-20 17:06 UTCCISA KEV update
  25. 2026-08-20 14:22 UTCVendor advisory
Show 75 more
  1. 2026-08-20 14:22 UTCGHSA enrichment
  2. 2026-08-20 10:20 UTCVendor advisory
  3. 2026-08-20 10:20 UTCGHSA enrichment
  4. 2026-08-20 06:17 UTCVendor advisory
  5. 2026-08-20 06:17 UTCGHSA enrichment
  6. 2026-08-20 02:14 UTCVendor advisory
  7. 2026-08-20 02:14 UTCGHSA enrichment
  8. 2026-08-19 22:11 UTCVendor advisory
  9. 2026-08-19 22:11 UTCGHSA enrichment
  10. 2026-08-19 18:08 UTCEG score recompute
  11. 2026-08-19 18:08 UTCVendor advisory
  12. 2026-08-19 18:08 UTCGHSA enrichment
  13. 2026-08-19 17:33 UTCCISA KEV update
  14. 2026-08-19 16:59 UTCEPSS rescore
  15. 2026-08-19 14:05 UTCVendor advisory
  16. 2026-08-19 14:05 UTCGHSA enrichment
  17. 2026-08-19 10:02 UTCVendor advisory
  18. 2026-08-19 10:02 UTCGHSA enrichment
  19. 2026-08-19 06:00 UTCVendor advisory
  20. 2026-08-19 05:59 UTCGHSA enrichment
  21. 2026-08-19 01:56 UTCVendor advisory
  22. 2026-08-19 01:56 UTCGHSA enrichment
  23. 2026-08-18 21:54 UTCVendor advisory
  24. 2026-08-18 21:54 UTCGHSA enrichment
  25. 2026-08-18 17:50 UTCVendor advisory
  26. 2026-08-18 17:50 UTCGHSA enrichment
  27. 2026-08-18 16:58 UTCCISA KEV update
  28. 2026-08-18 13:48 UTCEG score recompute
  29. 2026-08-18 13:48 UTCVendor advisory
  30. 2026-08-18 13:48 UTCGHSA enrichment
  31. 2026-08-18 13:42 UTCEPSS rescore
  32. 2026-08-18 09:45 UTCVendor advisory
  33. 2026-08-18 09:45 UTCGHSA enrichment
  34. 2026-08-18 05:41 UTCVendor advisory
  35. 2026-08-18 05:41 UTCGHSA enrichment
  36. 2026-08-18 01:38 UTCVendor advisory
  37. 2026-08-18 01:38 UTCGHSA enrichment
  38. 2026-08-17 21:35 UTCVendor advisory
  39. 2026-08-17 21:35 UTCGHSA enrichment
  40. 2026-08-17 17:32 UTCEG score recompute
  41. 2026-08-17 17:32 UTCVendor advisory
  42. 2026-08-17 17:32 UTCGHSA enrichment
  43. 2026-08-17 13:56 UTCCISA KEV update
  44. 2026-08-17 13:29 UTCVendor advisory
  45. 2026-08-17 13:29 UTCGHSA enrichment
  46. 2026-08-17 09:26 UTCVendor advisory
  47. 2026-08-17 09:26 UTCGHSA enrichment
  48. 2026-08-17 05:24 UTCVendor advisory
  49. 2026-08-17 05:24 UTCGHSA enrichment
  50. 2026-08-17 01:22 UTCVendor advisory
  51. 2026-08-17 01:22 UTCGHSA enrichment
  52. 2026-08-16 21:19 UTCVendor advisory
  53. 2026-08-16 21:19 UTCGHSA enrichment
  54. 2026-08-16 17:16 UTCVendor advisory
  55. 2026-08-16 17:16 UTCGHSA enrichment
  56. 2026-08-16 13:13 UTCVendor advisory
  57. 2026-08-16 13:13 UTCGHSA enrichment
  58. 2026-08-16 09:11 UTCVendor advisory
  59. 2026-08-16 09:10 UTCGHSA enrichment
  60. 2026-08-16 05:08 UTCEG score recompute
  61. 2026-08-16 05:08 UTCVendor advisory
  62. 2026-08-16 05:08 UTCGHSA enrichment
  63. 2026-08-16 02:09 UTCEPSS rescore
  64. 2026-08-16 01:06 UTCVendor advisory
  65. 2026-08-16 01:06 UTCGHSA enrichment
  66. 2026-08-15 21:03 UTCVendor advisory
  67. 2026-08-15 21:03 UTCGHSA enrichment
  68. 2026-08-15 17:00 UTCVendor advisory
  69. 2026-08-15 17:00 UTCGHSA enrichment
  70. 2026-08-15 12:57 UTCVendor advisory
  71. 2026-08-15 12:57 UTCGHSA enrichment
  72. 2026-08-15 08:54 UTCVendor advisory
  73. 2026-08-15 08:54 UTCGHSA enrichment
  74. 2026-08-15 04:51 UTCEG score recompute
  75. 2026-08-15 04:51 UTCVendor advisory

Publicly available exploits

(7 references)

Working exploit code is in the public domain (4 GitHub PoCs) (3 Exploit-DB entries). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

  • GitHub PoCtimhsutw/cve-2013-2094
    First seen Mar 29, 2015

    CVE-2013-2094 kernel exploit for i386

    Open source ↗
  • Exploit-DBEDB-33589✓ verified
    First seen May 31, 2014

    Linux Kernel 3.2.0-23/3.5.0-23 (Ubuntu 12.04/12.04.1/12.04.2 x64) - 'perf_swevent_init' Local Privilege Escalation (3)

    Open source ↗
  • GitHub PoCPashkela/CVE-2013-2094
    First seen Jun 16, 2013

    CVE-2013-2094 Linux 2.6.32/2.6.37 - 3.8.10 PERF_EVENTS local root x86/x86_64

    Open source ↗
  • Exploit-DBEDB-26131✓ verified
    First seen Jun 11, 2013

    Linux Kernel < 3.8.9 (x86-64) - 'perf_swevent_init' Local Privilege Escalation (2)

    Open source ↗
  • GitHub PoChiikezoe/libperf_event_exploit
    First seen Jun 5, 2013

    CVE-2013-2094 exploit for android

    Open source ↗
  • GitHub PoCrealtalk/cve-2013-2094
    First seen May 20, 2013

    original cve-2013-2094 exploit and a rewritten version for educational purposes

    Open source ↗
  • Exploit-DBEDB-25444
    First seen May 14, 2013

    Linux Kernel 2.6.32 < 3.x (CentOS 5/6) - 'PERF_EVENTS' Local Privilege Escalation (1)

    Open source ↗

Frequently asked(6)

What is CVE-2013-2094?
CVE-2013-2094 is a critical vulnerability published on May 14, 2013. The perfsweventinit 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 perfeventopen system call.
When was CVE-2013-2094 disclosed?
CVE-2013-2094 was first published in the National Vulnerability Database on May 14, 2013, with the most recent update on April 22, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2013-2094 actively exploited?
Yes. CISA added CVE-2013-2094 to the Known Exploited Vulnerabilities catalog on September 15, 2022, affecting Linux Kernel. KEV listing indicates confirmed exploitation in the wild; this CVE warrants immediate patching attention.
What is the CVSS score of CVE-2013-2094?
CVE-2013-2094 has a CVSS v3 base score of 8.4 (NVD). EchelonGraph synthesises NVD + CISA KEV + FIRST EPSS + GHSA into a combined EG score of 9.0.
Which products are affected by CVE-2013-2094?
CVE-2013-2094 affects Linux Kernel. The full affected-products list, including version ranges and fixed versions, is shown in the Affected Packages section of this page.
How do I remediate CVE-2013-2094?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2013-2094, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

See which npm, PyPI, Go, and Maven packages are affected by CVE-2013-2094

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