CVE-2016-1583

HIGHNVD 7.87.8—
EchelonGraph scoreMEDIUM confidence

Score 7.8 from GitHub Security Advisory (severity: HIGH) published 2022-05-14. NVD baseline CVSS 7.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Weaponized
7.8
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 1%CVSS: 7.8Exploit: NoneExposed: 0

A fix is available — apply it.

The ecryptfs_privileged_open function in fs/ecryptfs/kthread.c in the Linux kernel before 4.6.3 allows local users to gain privileges or cause a denial of service (stack memory consumption) via vectors involving crafted mmap calls for /proc pathnames, leading to recursive pagefault handling.

CVSS v3
7.8
EG Score
7.8(medium)
EG Risk
66(Track)
EG Risk 66/100SSVC: 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
Severity78% × 45%
Exploitation65% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS
69.5%
KEV
Not listed

Published

June 27, 2016

Last Modified

May 6, 2026

References (100)

Patch Availability(16)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntulinux-image-3.2.0-104-powerpc64-smp (3.2.0-104.145) @ precise2026-05-22ubuntu
ubuntulinux-image-3.2.0-1482-omap4 (3.2.0-1482.109) @ precise2026-05-22ubuntu
ubuntulinux-image-4.4.0-1012-raspi2 (4.4.0-1012.16) @ xenial2026-05-22ubuntu
ubuntulinux-image-extra-3.16.0-73-generic (3.16.0-73.95~14.04.1) @ trusty2026-05-22ubuntu
ubuntulinux-image-extra-4.4.0-24-generic (4.4.0-24.43) @ xenial2026-05-22ubuntu
ubuntulinux-image-4.4.0-1015-snapdragon (4.4.0-1015.18) @ xenial2026-05-22ubuntu
ubuntulinux-image-extra-3.19.0-61-generic (3.19.0-61.69~14.04.1) @ trusty2026-05-22ubuntu
ubuntulinux-image-3.13.0-88-generic (3.13.0-88.135~precise1) @ precise2026-05-22ubuntu
ubuntulinux-image-extra-3.13.0-88-generic (3.13.0-88.135) @ trusty2026-05-22ubuntu
ubuntulinux-image-4.2.0-1031-raspi2 (4.2.0-1031.41) @ wily2026-05-22ubuntu
ubuntulinux-image-extra-4.4.0-24-generic (4.4.0-24.43~14.04.1) @ trusty2026-05-22ubuntu
ubuntulinux-image-4.2.0-38-generic (4.2.0-38.45) @ wily2026-05-22ubuntu
ubuntulinux-image-extra-4.2.0-38-generic (4.2.0-38.45~14.04.1) @ trusty2026-05-22ubuntu
redhatkernel-0:2.6.32-573.47.1.el62017-09-19redhat
redhatkernel-0:2.6.32-642.11.1.el62016-11-15redhat
redhatkernel-0:2.6.18-416.el52016-10-28redhat

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.

All Vendor Advisories

(16)

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 12× in last 7d / 42× 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 105 total refreshes for this CVE.

  1. 2026-07-23 14:14 UTCEPSS rescore
  2. 2026-07-23 01:21 UTCEG score recompute
  3. 2026-07-22 22:01 UTCEG score recompute
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  44. 2026-06-07 15:22 UTCEPSS rescore
  45. 2026-06-07 15:22 UTCEPSS rescore
  46. 2026-06-06 18:29 UTCOSV refresh
  47. 2026-06-06 13:45 UTCEPSS rescore
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  69. 2026-05-22 19:51 UTCEG score recompute
  70. 2026-05-22 19:51 UTCVendor advisory
  71. 2026-05-22 19:51 UTCGHSA enrichment
  72. 2026-05-21 22:40 UTCEPSS rescore
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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-39992✓ verified
    First seen Jun 21, 2016

    Linux Kernel - 'ecryptfs' '/proc/$pid/environ' Local Privilege Escalation

    Open source ↗

Frequently asked(5)

What is CVE-2016-1583?
CVE-2016-1583 is a high vulnerability published on June 27, 2016. The ecryptfsprivilegedopen function in fs/ecryptfs/kthread.c in the Linux kernel before 4.6.3 allows local users to gain privileges or cause a denial of service (stack memory consumption) via vectors involving crafted mmap calls for /proc pathnames, leading to recursive pagefault handling.
When was CVE-2016-1583 disclosed?
CVE-2016-1583 was first published in the National Vulnerability Database on June 27, 2016, 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-2016-1583 actively exploited?
CVE-2016-1583 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 69.5% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2016-1583?
CVE-2016-1583 has a CVSS v3 base score of 7.8 (NVD).
How do I remediate CVE-2016-1583?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2016-1583, 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

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