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 — 4 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 services: Not assessed

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
9.0CRITICALhigh confidence
EG Risk
81
EG Risk 81/100CISA SSVC

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%
CISA SSVC: Track at low, Attend at medium and Act at high mission impact.
Action: A fix is available. Apply it within your standard update timelines at low, sooner than that at medium and as soon as possible at high mission impact.
EPSS PROB
48%
EPSS %ILE
98th
KEV
⚠ Exploited

CISA SSVCTrack at low, Attend at medium and Act at high mission impact.

A fix is available. Apply it within your standard update timelines at low, sooner than that at medium and as soon as possible at high mission impact.

Exploitation active (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

Published

May 14, 2013

Last Modified

April 22, 2026

Advisory Details (2)

Auto-updated May 4, 2026
Patch available.
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

Vendor Advisories for CVE-2013-2094(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Patch Availability(13)

Vendor / EcosystemFix (by version range) / PatchReleasedSource
ubuntulinux-image-3.5.0-30-powerpc64-smp (3.5.0-30.51) @ quantal2026-10-06ubuntu
ubuntulinux-image-3.5.0-225-omap4 (3.5.0-225.36) @ raring2026-10-06ubuntu
ubuntulinux-image-3.2.0-43-generic (3.2.0-43.68) @ precise2026-10-06ubuntu
ubuntulinux-image-3.8.0-23-generic (3.8.0-23.34~precise1) @ precise2026-10-06ubuntu
ubuntulinux-image-3.5.0-225-omap4 (3.5.0-225.36) @ quantal2026-10-06ubuntu
ubuntulinux-image-3.8.0-21-generic (3.8.0-21.32) @ raring2026-10-06ubuntu
ubuntulinux-image-3.5.0-30-generic (3.5.0-30.51~precise1) @ precise2026-10-06ubuntu
ubuntulinux-image-3.2.0-1432-omap4 (3.2.0-1432.41) @ precise2026-10-06ubuntu
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 rangeFix by version rangeDependents
linux—
  • every version up to 3.8.11-1: fixed in 3.8.11-1
—
Debian:12(1)
PackageVulnerable rangeFix by version rangeDependents
linux—
  • every version up to 3.8.11-1: fixed in 3.8.11-1
—
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
linux—
  • every version up to 3.8.11-1: fixed in 3.8.11-1
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
linux—
  • every version up to 3.8.11-1: fixed in 3.8.11-1
—
Debian:7(1)
PackageVulnerable rangeFix by version rangeDependents
linux3.2.41-2, 3.2.41-2+deb7u1, 3.2.41-2+deb7u2~bpo60+1
  • every version up to 3.2.41-2+deb7u2: fixed in 3.2.41-2+deb7u2
—

Additional Vendor Advisories

(13)

Vendors that published advisories for this CVE beyond the curated set above. Broader coverage but minimal per-row detail — click through for the original advisory.

Data Freshness Timeline

(refreshed 91× in last 7d / 408× 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 1,731 total refreshes for this CVE.

  1. 2026-10-06 05:36 UTCVendor advisory
  2. 2026-10-06 05:36 UTCGHSA enrichment
  3. 2026-10-06 01:34 UTCVendor advisory
  4. 2026-10-06 01:34 UTCGHSA enrichment
  5. 2026-10-06 01:34 UTCVendor advisory
  6. 2026-10-06 01:34 UTCGHSA enrichment
  7. 2026-10-05 21:31 UTCVendor advisory
  8. 2026-10-05 21:31 UTCGHSA enrichment
  9. 2026-10-05 17:26 UTCVendor advisory
  10. 2026-10-05 17:26 UTCGHSA enrichment
  11. 2026-10-05 13:23 UTCVendor advisory
  12. 2026-10-05 13:23 UTCGHSA enrichment
  13. 2026-10-05 09:21 UTCVendor advisory
  14. 2026-10-05 09:21 UTCGHSA enrichment
  15. 2026-10-05 05:19 UTCVendor advisory
  16. 2026-10-05 05:19 UTCGHSA enrichment
  17. 2026-10-05 01:16 UTCEG score recompute
  18. 2026-10-05 01:16 UTCVendor advisory
  19. 2026-10-05 01:16 UTCGHSA enrichment
  20. 2026-10-04 23:16 UTCEPSS rescore
  21. 2026-10-04 21:14 UTCVendor advisory
  22. 2026-10-04 21:14 UTCGHSA enrichment
  23. 2026-10-04 17:11 UTCVendor advisory
  24. 2026-10-04 17:11 UTCGHSA enrichment
  25. 2026-10-04 13:06 UTCVendor advisory
Show 75 more
  1. 2026-10-04 13:06 UTCGHSA enrichment
  2. 2026-10-04 09:02 UTCVendor advisory
  3. 2026-10-04 09:02 UTCGHSA enrichment
  4. 2026-10-04 04:59 UTCVendor advisory
  5. 2026-10-04 04:59 UTCGHSA enrichment
  6. 2026-10-04 00:57 UTCVendor advisory
  7. 2026-10-04 00:57 UTCGHSA enrichment
  8. 2026-10-03 20:55 UTCVendor advisory
  9. 2026-10-03 20:55 UTCGHSA enrichment
  10. 2026-10-03 16:52 UTCVendor advisory
  11. 2026-10-03 16:52 UTCGHSA enrichment
  12. 2026-10-03 12:50 UTCVendor advisory
  13. 2026-10-03 12:50 UTCGHSA enrichment
  14. 2026-10-03 08:47 UTCVendor advisory
  15. 2026-10-03 08:46 UTCGHSA enrichment
  16. 2026-10-03 04:43 UTCVendor advisory
  17. 2026-10-03 04:42 UTCGHSA enrichment
  18. 2026-10-03 00:38 UTCVendor advisory
  19. 2026-10-03 00:38 UTCGHSA enrichment
  20. 2026-10-02 20:35 UTCVendor advisory
  21. 2026-10-02 20:35 UTCGHSA enrichment
  22. 2026-10-02 16:29 UTCEG score recompute
  23. 2026-10-02 16:29 UTCVendor advisory
  24. 2026-10-02 16:29 UTCGHSA enrichment
  25. 2026-10-02 12:26 UTCVendor advisory
  26. 2026-10-02 12:26 UTCGHSA enrichment
  27. 2026-10-02 08:23 UTCVendor advisory
  28. 2026-10-02 08:23 UTCGHSA enrichment
  29. 2026-10-02 04:21 UTCVendor advisory
  30. 2026-10-02 04:21 UTCGHSA enrichment
  31. 2026-10-02 00:15 UTCVendor advisory
  32. 2026-10-02 00:15 UTCGHSA enrichment
  33. 2026-10-01 20:13 UTCEG score recompute
  34. 2026-10-01 20:13 UTCVendor advisory
  35. 2026-10-01 20:13 UTCGHSA enrichment
  36. 2026-10-01 16:11 UTCVendor advisory
  37. 2026-10-01 16:11 UTCGHSA enrichment
  38. 2026-10-01 12:08 UTCVendor advisory
  39. 2026-10-01 12:08 UTCGHSA enrichment
  40. 2026-10-01 08:05 UTCVendor advisory
  41. 2026-10-01 08:05 UTCGHSA enrichment
  42. 2026-10-01 04:03 UTCVendor advisory
  43. 2026-10-01 04:02 UTCGHSA enrichment
  44. 2026-10-01 00:00 UTCVendor advisory
  45. 2026-09-30 23:59 UTCGHSA enrichment
  46. 2026-09-30 19:53 UTCVendor advisory
  47. 2026-09-30 19:53 UTCGHSA enrichment
  48. 2026-09-30 15:51 UTCEG score recompute
  49. 2026-09-30 15:51 UTCVendor advisory
  50. 2026-09-30 15:51 UTCGHSA enrichment
  51. 2026-09-30 14:58 UTCEPSS rescore
  52. 2026-09-30 11:48 UTCVendor advisory
  53. 2026-09-30 11:48 UTCGHSA enrichment
  54. 2026-09-30 07:45 UTCVendor advisory
  55. 2026-09-30 07:45 UTCGHSA enrichment
  56. 2026-09-30 03:42 UTCVendor advisory
  57. 2026-09-30 03:42 UTCGHSA enrichment
  58. 2026-09-29 23:38 UTCVendor advisory
  59. 2026-09-29 23:38 UTCGHSA enrichment
  60. 2026-09-29 19:36 UTCVendor advisory
  61. 2026-09-29 19:35 UTCGHSA enrichment
  62. 2026-09-29 15:30 UTCEG score recompute
  63. 2026-09-29 15:30 UTCVendor advisory
  64. 2026-09-29 15:30 UTCGHSA enrichment
  65. 2026-09-29 11:27 UTCVendor advisory
  66. 2026-09-29 11:27 UTCGHSA enrichment
  67. 2026-09-29 07:25 UTCVendor advisory
  68. 2026-09-29 07:25 UTCGHSA enrichment
  69. 2026-09-29 03:23 UTCVendor advisory
  70. 2026-09-29 03:23 UTCGHSA enrichment
  71. 2026-09-28 23:20 UTCEG score recompute
  72. 2026-09-28 23:20 UTCVendor advisory
  73. 2026-09-28 23:20 UTCGHSA enrichment
  74. 2026-09-28 19:17 UTCVendor advisory
  75. 2026-09-28 19:17 UTCGHSA enrichment

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.

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

    CVE-2013-2094 kernel exploit for i386

    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 ↗
  • 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 ↗

Related CVEs(same product + same vendor)

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 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 attention. A fix is available. Apply it.
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 (CRITICAL).
Which products are affected by CVE-2013-2094?
CVE-2013-2094 affects Linux Kernel. The affected packages EchelonGraph has on record, with version ranges, are listed in the Affected Packages section of this page.
How do I remediate CVE-2013-2094?
A fix for CVE-2013-2094 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2013-2094 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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