CVE-2015-8839

MEDIUMNVD 5.15.1—
EchelonGraph scoreMEDIUM confidence

Score 5.1 from GitHub Security Advisory published 2022-05-13. NVD baseline CVSS 5.1; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
5.1EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 5.1Exploit: None knownExposed: 0

A fix is available — apply it.

Multiple race conditions in the ext4 filesystem implementation in the Linux kernel before 4.5 allow local users to cause a denial of service (disk corruption) by writing to a page that is associated with a different user's file after unsynchronized hole punching and page-fault handling.

CVSS v3
5.1
EG Score
5.1(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
Severity51% × 45%
Exploitation0% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
29%
KEV
Not listed

Published

May 2, 2016

Last Modified

June 17, 2026

References (28)

Vendor Advisories for CVE-2015-8839(3)

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

Patch Availability(6)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntulinux-image-extra-4.4.0-24-generic (4.4.0-24.43~14.04.1) @ trusty2026-05-22ubuntu
ubuntulinux-image-4.4.0-1012-raspi2 (4.4.0-1012.16) @ xenial2026-05-22ubuntu
ubuntulinux-image-extra-4.4.0-24-generic (4.4.0-24.43) @ xenial2026-05-22ubuntu
redhatkernel-rt-1:3.10.0-693.2.1.rt56.585.el6rt2017-09-06redhat
redhatkernel-0:3.10.0-693.el72017-08-01redhat
redhatkernel-rt-0:3.10.0-693.rt56.617.el72017-08-01redhat

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—4.5.1-1—
Debian:12(1)
PackageVulnerable rangeFixed inDependents
linux—4.5.1-1—
Debian:13(1)
PackageVulnerable rangeFixed inDependents
linux—4.5.1-1—
Debian:14(1)
PackageVulnerable rangeFixed inDependents
linux—4.5.1-1—
Debian:8(1)
PackageVulnerable rangeFixed inDependents
linux3.16.36-1 ... 3.16.81-1 (70 versions)3.16.84-1—

Weakness Classification(1)

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

Additional Vendor Advisories

(3)

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 6× in last 7d / 21× 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 145 total refreshes for this CVE.

  1. 2026-09-19 00:36 UTCOSV refresh
  2. 2026-09-18 19:22 UTCEPSS rescore
  3. 2026-09-17 19:21 UTCEPSS rescore
  4. 2026-09-15 03:05 UTCEPSS rescore
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  15. 2026-08-31 04:20 UTCOSV refresh
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  1. 2026-08-15 01:25 UTCEPSS rescore
  2. 2026-08-14 12:16 UTCOSV refresh
  3. 2026-08-12 13:46 UTCEPSS rescore
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  5. 2026-08-09 13:42 UTCEPSS rescore
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  9. 2026-08-05 19:12 UTCEPSS rescore
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  11. 2026-08-04 10:31 UTCEPSS rescore
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  15. 2026-07-30 00:37 UTCOSV refresh
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  20. 2026-07-23 14:14 UTCEPSS rescore
  21. 2026-07-23 01:20 UTCEG score recompute
  22. 2026-07-23 00:21 UTCEG score recompute
  23. 2026-07-22 22:00 UTCEG score recompute
  24. 2026-07-22 14:04 UTCEPSS rescore
  25. 2026-07-21 15:21 UTCEPSS rescore
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  27. 2026-07-20 17:03 UTCEPSS rescore
  28. 2026-07-19 14:27 UTCEPSS rescore
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  37. 2026-07-13 22:26 UTCEPSS rescore
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  39. 2026-07-12 10:08 UTCOSV refresh
  40. 2026-07-12 05:42 UTCEPSS rescore
  41. 2026-07-11 08:23 UTCEPSS rescore
  42. 2026-07-09 19:05 UTCEPSS rescore
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  44. 2026-07-08 15:10 UTCEPSS rescore
  45. 2026-07-07 13:42 UTCEPSS rescore
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  49. 2026-07-05 02:26 UTCEPSS rescore
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  73. 2026-06-18 17:50 UTCEPSS rescore
  74. 2026-06-17 17:50 UTCEPSS rescore
  75. 2026-06-17 17:49 UTCEPSS rescore

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Frequently asked(5)

What is CVE-2015-8839?
CVE-2015-8839 is a medium vulnerability published on May 2, 2016. Multiple race conditions in the ext4 filesystem implementation in the Linux kernel before 4.5 allow local users to cause a denial of service (disk corruption) by writing to a page that is associated with a different user's file after unsynchronized hole punching and page-fault handling.
When was CVE-2015-8839 disclosed?
CVE-2015-8839 was first published in the National Vulnerability Database on May 2, 2016, with the most recent update on June 17, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2015-8839 actively exploited?
CVE-2015-8839 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 71.2% of all scored CVEs.
What is the CVSS score of CVE-2015-8839?
CVE-2015-8839 has a CVSS v3 base score of 5.1 (NVD).
How do I remediate CVE-2015-8839?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2015-8839, 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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