CVE-2015-8660

MEDIUMNVD 6.76.7—
EchelonGraph scoreMEDIUM confidence

Score 6.7 from GitHub Security Advisory (severity: HIGH) published 2022-05-17. NVD baseline CVSS 6.7; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Weaponized
6.7EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 22%CVSS: 6.7Exploit: Metasploit · Exploit-DB (verified) · epss top5pct · public exploitExposed: 0

A fix is available — apply it.

The ovl_setattr function in fs/overlayfs/inode.c in the Linux kernel through 4.3.3 attempts to merge distinct setattr operations, which allows local users to bypass intended access restrictions and modify the attributes of arbitrary overlay files via a crafted application.

CVSS v3
6.7
EG Score
6.7(medium)
EG Risk
61(Track)
EG Risk 61/100SSVC: 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
Severity67% × 45%
Exploitation65% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
22%
EPSS %ILE
98%
KEV
Not listed

Published

December 28, 2015

Last Modified

May 6, 2026

References (46)

Patch Availability(8)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntulinux-image-extra-3.19.0-43-generic (3.19.0-43.49~14.04.1) @ trusty2026-05-22ubuntu
ubuntulinux-image-3.19.0-43-powerpc-e500mc (3.19.0-43.49) @ vivid2026-05-22ubuntu
ubuntulinux-image-extra-4.2.0-23-generic (4.2.0-23.28~14.04.1) @ trusty2026-05-22ubuntu
ubuntulinux-image-4.2.0-1018-raspi2 (4.2.0-1018.25) @ wily2026-05-22ubuntu
ubuntulinux-image-4.2.0-23-powerpc-e500mc (4.2.0-23.28) @ wily2026-05-22ubuntu
redhatkernel-rt-0:3.10.0-327.28.2.rt56.234.el7_22016-08-02redhat
redhatkernel-0:3.10.0-327.28.2.el72016-08-02redhat
redhatkernel-rt-1:3.10.0-327.rt56.194.el6rt2016-08-02redhat

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—4.3.3-3—
Debian:12(1)
PackageVulnerable rangeFixed inDependents
linux—4.3.3-3—
Debian:13(1)
PackageVulnerable rangeFixed inDependents
linux—4.3.3-3—
Debian:14(1)
PackageVulnerable rangeFixed inDependents
linux—4.3.3-3—

All Vendor Advisories

(8)

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 6× in last 7d / 26× 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 115 total refreshes for this CVE.

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

Publicly available exploits

(5 references)

Working exploit code is in the public domain (1 Metasploit module) (1 GitHub PoC) (3 Exploit-DB entries). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

  • Exploit-DBEDB-40688✓ verified
    First seen Nov 2, 2016

    Linux Kernel (Ubuntu / Fedora / RedHat) - 'Overlayfs' Local Privilege Escalation (Metasploit)

    Open source ↗
  • GitHub PoCwhu-enjoy/CVE-2015-8660
    First seen Apr 14, 2016

    这个代码包含了CVE-2015-8660漏洞的利用代码，还有注释，出现问题的源代码，打了补丁后的代码

    Open source ↗
  • Exploit-DBEDB-39230
    First seen Jan 12, 2016

    Linux Kernel 4.3.3 - 'overlayfs' Local Privilege Escalation (2)

    Open source ↗
  • Exploit-DBEDB-39166✓ verified
    First seen Jan 5, 2016

    Linux Kernel 4.3.3 (Ubuntu 14.04/15.10) - 'overlayfs' Local Privilege Escalation (1)

    Open source ↗
  • Metasploitexploit/linux/local/overlayfs_priv_esc✓ verified
    First seen Jun 16, 2015

    Overlayfs Privilege Escalation

    Open source ↗

Related CVEs(same vendor)

Frequently asked(5)

What is CVE-2015-8660?
CVE-2015-8660 is a medium vulnerability published on December 28, 2015. The ovl_setattr function in fs/overlayfs/inode.c in the Linux kernel through 4.3.3 attempts to merge distinct setattr operations, which allows local users to bypass intended access restrictions and modify the attributes of arbitrary overlay files via a crafted application.
When was CVE-2015-8660 disclosed?
CVE-2015-8660 was first published in the National Vulnerability Database on December 28, 2015, with the most recent update on May 6, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2015-8660 actively exploited?
CVE-2015-8660 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 22% probability of exploitation in the next 30 days, which ranks it in the top 2.5% of all scored CVEs.
What is the CVSS score of CVE-2015-8660?
CVE-2015-8660 has a CVSS v3 base score of 6.7 (NVD).
How do I remediate CVE-2015-8660?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2015-8660, 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-2015-8660

Explore →

Is Your Infrastructure Affected by CVE-2015-8660?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Start Free Scan →Browse All CVEs