vciy

CVE-2013-2094

INDEX BUILT · 2026-09-20

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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…

CVE-2013-20943 of 4 sources documented this
70

rank 70 = 40 + 18 + 1 + 5 + 6

rank@v1 · act now

Someone is already using it

CISA KEV catalog · public proof-of-concept · FIRST EPSS

EPSS 0.47709 · CISA KEV listed  ·  without this subject the record ranks 30

What it costs you if it fires

NVD CVSS base score, then the CNA's own

CVSS 7.2, from NVD  ·  without this subject the record ranks 52

It is getting worse, not staying still

FIRST EPSS series, rescorings and bad loads removed

rose on 2025-09-17  ·  without this subject the record ranks 69

How much of the world it touches

NVD CPE configurations

4 products in the CPE ranges  ·  without this subject the record ranks 65

Someone else already set the date

CISA KEV remediation due date

CISA remediation date held  ·  without this subject the record ranks 64

Unaudited dollar value2 of 3 inputs carry a receipt
Exposure$2.38Mover the next 30 days, if this record is yours
Movementno material movementthe record holds only daily drift and scoring model releases
Basisassumeda published average, not your estate

$2.38M = $4.99M incident cost x 1 exposure x 0.47709 likelihood

udv@v1 · unaudited · wrong for you until you say what you run

$4.99M is the cost of a breach that happened, from IBM Cost of a Data Breach Report 2026, global average. It is not the value of any asset of yours. That average already covers breaches of every severity, so scaling it by exposure understates a partial-impact record. That is an assumption, not a measurement. Your own asset value goes in the decision record.

Hindsight · the state

0.47709EPSSKEV · LISTED
Severity7.2 HIGHreceipt
Harmtotal lossreceipt
Exploitationin the wild · KEVreceipt
Defenseunaffected versions publishedreceipt
Movementthreshold crossedreceipt
RISING10Risen from 0.03821 to 0.47709 across 55 observations. arc-rules@v1

Foresight · where to check next

No weakness class or product neighbourhood is held for this record, so this index cannot name anywhere to check next. That is an absence in the record, not a finding about the software.

Color is a claim, not decoration:the hostile worldthe defenseno signal

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Harm, if it fires from the vector and the weakness

Written for the ticket you're about to file.

Reachneeds local access · no authentication · low attack complexityreceipt
ImpactComplete confidentiality, integrity and availability lossreceipt
Scored fromCVSS v2.0 · NVD's vectorreceipt
Weakness classCWE-189receipt
Published consequencesMITRE publishes no common consequences for this weakness.[email protected]
Ransomware campaign useUnknown to CISAreceipt

CISA KEV & Federal Remediation Deadline from the record and CISA

The fix, and how long it's been waiting.

First unaffected version, by branchkernel 3.0.75; kernel 3.2.45; kernel 3.4.42; kernel 3.8.9receipt
Patch available sinceNo dated patch-availability record in held sources. The index holds reference URLs without dates and only the current revision of the CVE record, so the day a fix first existed cannot be derived. Only the versions it landed in.
CISA remediation statusoverdue since 2022-10-06receipt
CISA required actionApply updates per vendor instructions.receipt
Published to CISA KEV3411 daysderived

Exploit Status & Known PoCs a ladder, not a score

Current rung: Exploited in the wild · CISA KEV listed, 2022-09-15.

  • RUNG 1Nothing observed in held sources
  • RUNG 2Proof-of-concept published · 7 public repositories2013-05-20receipt
  • RUNG 3Exploited in the wild · CISA KEV listed2022-09-15receipt
  • RUNG 4Ransomware campaign use known

Authority who says so

CVSS, NVD7.2 HIGHreceipt
Exploit probability0.47709 · top 1% of all CVEsreceipt
Blast breadth1 product across 1 vendorderived
Assigned byredhatreceipt
Recorded changes69 · last 19 Sep 2026derived

Affected & Fixed Versions as published

Named in the CPE rangesLinux kernelreceipt
Published rangeslinux kernel < 3.0.75; linux kernel >= 3.1 < 3.2.45; linux kernel >= 3.3 < 3.4.42; linux kernel >= 3.5 < 3.8.9receipt

A rung lights from a row in the index, never from an assessment. "Held sources" is the true scope of the claim: this index reads the CVE record, NVD, CISA KEV, FIRST's EPSS and public proof-of-concept repositories, and it does not observe attacks.

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What it is stated by the CNA

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. receipt

NVD's analysis a second authority

severity
7.2 AV:L/AC:L/Au:N/C:C/I:C/A:C
weakness
CWE-189
affected versions
linux kernel < 3.0.75; linux kernel >= 3.1 < 3.2.45; linux kernel >= 3.3 < 3.4.42; and 1 more, listed in full below
also scored by
8.4 CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

check it yourself lists.opensuse.org mandriva.com lkml.indiana.edu lkml.indiana.edu lists.centos.org ubuntu.com +14 morereceipt

Dated events

2022-09-15Added to CISA KEV2022-10-06CISA remediation due2025-03-17EPSS moved 0.00 to 0.542026-06-15EPSS moved 0.66 to 0.48

Movement the material steps

4 Feb 20220.03821
7 Mar 20237.9e-4 · scoring model v2023.03.01
17 Mar 20250.53746 · crossed 0.10 and 0.50 · scoring model v2025.03.14
1 Jul 20250.64956
15 Jun 20260.47709 · crossed 0.50 · scoring model v2026.06.15
Show all 55 observations
4 Feb 20220.03821
3 Feb 20230.05433
13 Feb 20230.03821
7 Mar 20237.9e-4
8 Mar 20230.00079
30 Nov 20230.00066
16 Feb 20240.00179
9 Oct 20240.00160
17 Dec 20240.00153
17 Mar 20250.53746
19 Mar 20250.561
20 Mar 20250.53746
22 Mar 20250.561
23 Mar 20250.53746
25 Mar 20250.61542
1 May 20250.63658
9 May 20250.61542
1 Jun 20250.63658
4 Jun 20250.61542
8 Jun 20250.62894
15 Jun 20250.63396
27 Jun 20250.62894
1 Jul 20250.64956
6 Jul 20250.62894
10 Jul 20250.55246
1 Aug 20250.57565
5 Aug 20250.55246
11 Aug 20250.62894
1 Sep 20250.64956
8 Sep 20250.62894
16 Sep 20250.6226
17 Sep 20250.70503
18 Sep 20250.63061
1 Oct 20250.63892
4 Oct 20250.63061
6 Oct 20250.64419
22 Oct 20250.62391
1 Nov 20250.61143
2 Nov 20250.61843
4 Nov 20250.60979
1 Dec 20250.61843
4 Dec 20250.60979
21 Dec 20250.62259
1 Jan 20260.63103
4 Jan 20260.62259
28 Jan 20260.64534
1 Feb 20260.6534
4 Feb 20260.63645
14 Feb 20260.58454
1 Mar 20260.59352
4 Mar 20260.58454
22 Mar 20260.65851
22 May 20260.66322
31 May 20260.65851
15 Jun 20260.47709

55 observations held. A highlighted step crossed a promotion threshold. A step marked with a scoring model moved because the instrument was replaced, not because the vulnerability changed. receipt

The full biography

EPSS 0.47709Published2013-05-14Public PoC2013-05-20CISA KEV2022-09-15Index as of2026-09-04

Listed by CISA 3411 days after it published and the record had been public for 13 years, 3 months when this index was last written.

No material movement in 81 days as of the last ingest this index recorded.

Published 2013-05-14 receipt · Public PoC 2013-05-20 receipt · CISA KEV 2022-09-15 receipt · Index as of 2026-09-04 derived

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