CVE-2019-20934

MEDIUMNVD 5.35.3—
EchelonGraph scoreMEDIUM confidence

This medium-severity CVE scores 5.3 under NVD CVSS v3. EPSS exploit probability: 0.3%, top 76% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, nvd
5.3EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 5.3Exploit: None knownExposed: 0

A fix is available — apply it.

An issue was discovered in the Linux kernel before 5.2.6. On NUMA systems, the Linux fair scheduler has a use-after-free in show_numa_stats() because NUMA fault statistics are inappropriately freed, aka CID-16d51a590a8c.

CVSS v3
5.3
EG Score
5.3(medium)
EG Risk
28(Track)
EG Risk 28/100SSVC: Track

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
Severity53% × 45%
Exploitation0% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
24%
KEV
Not listed

Published

November 28, 2020

Last Modified

November 21, 2024

References (6)

Vendor Advisories for CVE-2019-20934(3)

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

Patch Availability(3)

Vendor / EcosystemFixed in / PatchReleasedSource
redhatkernel-0:3.10.0-1062.59.1.el72021-10-26redhat
redhatkernel-rt-0:3.10.0-1160.36.2.rt56.1179.el72021-07-21redhat
redhatkernel-0:3.10.0-1160.36.2.el72021-07-21redhat

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

(4 across 4 ecosystems)
Debian:11(1)
PackageVulnerable rangeFixed inDependents
linux—5.2.6-1—
Debian:12(1)
PackageVulnerable rangeFixed inDependents
linux—5.2.6-1—
Debian:13(1)
PackageVulnerable rangeFixed inDependents
linux—5.2.6-1—
Debian:14(1)
PackageVulnerable rangeFixed inDependents
linux—5.2.6-1—

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 8× in last 7d / 29× 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 122 total refreshes for this CVE.

  1. 2026-08-20 22:51 UTCEPSS rescore
  2. 2026-08-19 17:00 UTCEPSS rescore
  3. 2026-08-18 13:44 UTCEPSS rescore
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  8. 2026-08-15 01:22 UTCOSV refresh
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  18. 2026-07-30 16:24 UTCEPSS rescore
  19. 2026-07-30 13:44 UTCOSV refresh
  20. 2026-07-30 01:27 UTCEPSS rescore
  21. 2026-07-28 15:32 UTCEPSS rescore
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  1. 2026-07-23 14:15 UTCEPSS rescore
  2. 2026-07-23 01:44 UTCEG score recompute
  3. 2026-07-22 22:24 UTCEG score recompute
  4. 2026-07-22 14:05 UTCEPSS rescore
  5. 2026-07-21 15:22 UTCEPSS rescore
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  18. 2026-07-13 22:27 UTCEPSS rescore
  19. 2026-07-13 06:10 UTCEPSS rescore
  20. 2026-07-13 06:10 UTCEPSS rescore
  21. 2026-07-12 22:38 UTCOSV refresh
  22. 2026-07-12 05:43 UTCEPSS rescore
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  24. 2026-07-11 08:24 UTCEPSS rescore
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  26. 2026-07-09 19:06 UTCEPSS rescore
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  42. 2026-06-25 13:47 UTCEPSS rescore
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  44. 2026-06-24 14:03 UTCEPSS rescore
  45. 2026-06-24 14:03 UTCEPSS rescore
  46. 2026-06-24 08:29 UTCOSV refresh
  47. 2026-06-23 21:31 UTCEPSS rescore
  48. 2026-06-23 21:30 UTCEPSS rescore
  49. 2026-06-22 14:23 UTCEPSS rescore
  50. 2026-06-21 14:54 UTCEPSS rescore
  51. 2026-06-21 14:54 UTCEPSS rescore
  52. 2026-06-21 01:57 UTCEPSS rescore
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  54. 2026-06-19 19:23 UTCEPSS rescore
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  56. 2026-06-18 17:50 UTCEPSS rescore
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  60. 2026-06-14 23:15 UTCEPSS rescore
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  65. 2026-06-10 22:16 UTCEPSS rescore
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  67. 2026-06-08 14:15 UTCEPSS rescore
  68. 2026-06-07 15:23 UTCEPSS rescore
  69. 2026-06-07 15:23 UTCEPSS rescore
  70. 2026-06-07 12:29 UTCOSV refresh
  71. 2026-06-06 13:45 UTCEPSS rescore
  72. 2026-06-06 13:45 UTCEPSS rescore
  73. 2026-06-05 22:45 UTCEPSS rescore
  74. 2026-06-05 22:45 UTCEPSS rescore
  75. 2026-06-05 06:08 UTCEPSS rescore

Related CVEs(same vendor + same CWE)

Frequently asked(5)

What is CVE-2019-20934?
CVE-2019-20934 is a medium vulnerability published on November 28, 2020. An issue was discovered in the Linux kernel before 5.2.6. On NUMA systems, the Linux fair scheduler has a use-after-free in shownumastats() because NUMA fault statistics are inappropriately freed, aka CID-16d51a590a8c.
When was CVE-2019-20934 disclosed?
CVE-2019-20934 was first published in the National Vulnerability Database on November 28, 2020, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2019-20934 actively exploited?
CVE-2019-20934 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 75.8% of all scored CVEs.
What is the CVSS score of CVE-2019-20934?
CVE-2019-20934 has a CVSS v3 base score of 5.3 (NVD).
How do I remediate CVE-2019-20934?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2019-20934, 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.

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