CVE-2016-1576

HIGHNVD 7.87.8—
EchelonGraph scoreMEDIUM confidence

Score 7.8 from GitHub Security Advisory (severity: HIGH) published 2022-05-13. NVD baseline CVSS 7.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Elevated
7.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1.1%CVSS: 7.8Exploit: Elevated riskExposed services: Not assessed

A fix is available — apply it.

The overlayfs implementation in the Linux kernel through 4.5.2 does not properly restrict the mount namespace, which allows local users to gain privileges by mounting an overlayfs filesystem on top of a FUSE filesystem, and then executing a crafted setuid program.

CVSS v3
7.8
EG Score
7.8HIGHmedium confidence
EG Risk
56
EG Risk 56/100CISA 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
Severity78% × 45%
Exploitation40% × 40%
Automatability30% × 15%
CISA SSVC: Track at low or medium mission impact; Track* or Attend at high (mission-essential systems).
Action: A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.
EPSS PROB
1.1%
EPSS %ILE
65th
KEV
Not listed

CISA SSVCTrack at low or medium mission impact; Track* or Attend at high (mission-essential systems).

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

Exploitation public PoC (EG-KEV: elevated) · Automatable unknown (not published for this CVE) · Technical impact partial (CVSS below 9.0). 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 2, 2016

Last Modified

June 17, 2026

Advisory Details (8)

Auto-updated Sep 30, 2026
Patch available.
generic

CVE-2016-1576 | Ubuntu

http://people.canonical.com/~ubuntu-security/cve/2016/CVE-2016-1576.html
generic

Merge branch 'overlayfs-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/vfs - kernel/git/torvalds/linux.git - Linux kernel source tree

http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=e9f57ebcba563e0cd532926cab83c92bb4d79360
generic
https://launchpadlibrarian.net/235300225/0006-overlayfs-Propogate-nosuid-from-lower-and-upper-moun.patch
generic
https://launchpadlibrarian.net/235300093/0005-overlayfs-Be-more-careful-about-copying-up-sxid-file.patch
generic

Bug #1535150 “CVE-2016-1576” : Bugs : linux package : Ubuntu

https://bugs.launchpad.net/bugs/1535150
genericMentions a patch (unverified)

oss-security - Re: CVE-2021-3847: OverlayFS - Potential Privilege Escalation using overlays copy_up

http://www.openwall.com/lists/oss-security/2021/10/18/1
generic

oss-security - Overlayfs over Fuse Privilege Escalation in USERNS

http://www.openwall.com/lists/oss-security/2016/02/24/8
generic

Overlayfs Over Fuse Local Root Privilege Escalation

http://www.halfdog.net/Security/2016/OverlayfsOverFusePrivilegeEscalation/

Patch Availability(7)

Vendor / EcosystemFix (by version range) / PatchReleasedSource
ubuntulinux-image-extra-3.16.0-62-generic (3.16.0-62.82~14.04.1) @ trusty2026-05-22ubuntu
ubuntulinux-image-extra-3.13.0-79-generic (3.13.0-79.123) @ trusty2026-05-22ubuntu
ubuntulinux-image-extra-4.2.0-30-generic (4.2.0-30.35~14.04.1) @ trusty2026-05-22ubuntu
ubuntulinux-image-3.13.0-79-generic (3.13.0-79.123~precise1) @ precise2026-05-22ubuntu
ubuntulinux-image-extra-3.19.0-51-generic (3.19.0-51.57~14.04.1) @ trusty2026-05-22ubuntu
ubuntulinux-image-4.2.0-1025-raspi2 (4.2.0-1025.32) @ wily2026-05-22ubuntu
ubuntulinux-image-4.2.0-30-generic (4.2.0-30.35) @ wily2026-05-22ubuntu

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 rangeFix by version rangeDependents
linux—
  • every version up to 4.5.1-1: fixed in 4.5.1-1
—
Debian:12(1)
PackageVulnerable rangeFix by version rangeDependents
linux—
  • every version up to 4.5.1-1: fixed in 4.5.1-1
—
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
linux—
  • every version up to 4.5.1-1: fixed in 4.5.1-1
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
linux—
  • every version up to 4.5.1-1: fixed in 4.5.1-1
—

All Vendor Advisories

(7)

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 7× in last 7d / 22× 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 161 total refreshes for this CVE.

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

Publicly available exploits

(1 reference)

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

  • Exploit-DBEDB-41763
    First seen Nov 22, 2016

    Ubuntu 15.10 - 'USERNS ' Overlayfs Over Fuse Privilege Escalation

    Open source ↗

Related CVEs(same vendor)

Frequently asked(5)

What is CVE-2016-1576?
CVE-2016-1576 is a high vulnerability published on May 2, 2016. The overlayfs implementation in the Linux kernel through 4.5.2 does not properly restrict the mount namespace, which allows local users to gain privileges by mounting an overlayfs filesystem on top of a FUSE filesystem, and then executing a crafted setuid program.
When was CVE-2016-1576 disclosed?
CVE-2016-1576 was first published 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-2016-1576 actively exploited?
CVE-2016-1576 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1.1% probability of exploitation in the next 30 days (65th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2016-1576?
CVE-2016-1576 has a CVSS v3 base score of 7.8 (NVD).
How do I remediate CVE-2016-1576?
A fix for CVE-2016-1576 is available: update to the fixed version the vendor names in its advisory.

Dependency Blast Radius

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