CVE-2015-7566

MEDIUMNVD 4.64.6—
EchelonGraph scoreMEDIUM confidence

Score 4.6 from GitHub Security Advisory published 2022-05-14. NVD baseline CVSS 4.6; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Elevated
4.6EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 2%CVSS: 4.6Exploit: Elevated riskExposed: 0

A fix is available — apply it.

The clie_5_attach function in drivers/usb/serial/visor.c in the Linux kernel through 4.4.1 allows physically proximate attackers to cause a denial of service (NULL pointer dereference and system crash) or possibly have unspecified other impact by inserting a USB device that lacks a bulk-out endpoint.

CVSS v3
4.6
EG Score
4.6(medium)
EG Risk
41(Track)
EG Risk 41/100SSVC: 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
Severity46% × 45%
Exploitation40% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
2%
EPSS %ILE
77%
KEV
Not listed

Published

February 8, 2016

Last Modified

June 17, 2026

References (54)

Patch Availability(9)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntulinux-image-extra-4.2.0-34-generic (4.2.0-34.39~14.04.1) @ trusty2026-05-22ubuntu
ubuntulinux-image-extra-3.13.0-83-generic (3.13.0-83.127) @ trusty2026-05-22ubuntu
ubuntulinux-image-4.2.0-1027-raspi2 (4.2.0-1027.35) @ wily2026-05-22ubuntu
ubuntulinux-image-4.2.0-34-powerpc64-smp (4.2.0-34.39) @ wily2026-05-22ubuntu
ubuntulinux-image-extra-3.16.0-69-generic (3.16.0-69.89~14.04.1) @ trusty2026-05-22ubuntu
ubuntulinux-image-extra-3.19.0-56-generic (3.19.0-56.62~14.04.1) @ trusty2026-05-22ubuntu
ubuntulinux-image-3.13.0-83-generic-lpae (3.13.0-83.127~precise1) @ precise2026-05-22ubuntu
ubuntulinux-image-3.2.0-1480-omap4 (3.2.0-1480.106) @ precise2026-05-22ubuntu
ubuntulinux-image-3.2.0-102-virtual (3.2.0-102.142) @ precise2026-05-22ubuntu

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

(6 across 6 ecosystems)
Debian:11(1)
PackageVulnerable rangeFixed inDependents
linux—4.3.3-6—
Debian:12(1)
PackageVulnerable rangeFixed inDependents
linux—4.3.3-6—
Debian:13(1)
PackageVulnerable rangeFixed inDependents
linux—4.3.3-6—
Debian:14(1)
PackageVulnerable rangeFixed inDependents
linux—4.3.3-6—
Debian:6.0(1)
PackageVulnerable rangeFixed inDependents
linux-2.62.6.32-30 ... 2.6.32-48squeeze9 (44 versions)2.6.32-48squeeze19—
Debian:8(1)
PackageVulnerable rangeFixed inDependents
linux3.16.7-ckt11-1 ... 3.16.7-ckt9-3~deb8u1~bpo70+1 (22 versions)3.16.7-ckt20-1+deb8u3—

All Vendor Advisories

(9)

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 / 27× 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 127 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
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  6. 2026-08-15 01:25 UTCEPSS rescore
  7. 2026-08-14 13:54 UTCOSV refresh
  8. 2026-08-12 13:46 UTCEPSS rescore
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  11. 2026-08-08 16:32 UTCEPSS rescore
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  1. 2026-07-23 01:19 UTCEG score recompute
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  3. 2026-07-22 21:59 UTCEG score recompute
  4. 2026-07-22 14:04 UTCEPSS rescore
  5. 2026-07-21 15:21 UTCEPSS rescore
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  7. 2026-07-20 17:03 UTCEPSS rescore
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  17. 2026-07-13 22:26 UTCEPSS rescore
  18. 2026-07-13 22:26 UTCEPSS rescore
  19. 2026-07-12 11:38 UTCOSV refresh
  20. 2026-07-12 05:42 UTCEPSS rescore
  21. 2026-07-11 08:23 UTCEPSS rescore
  22. 2026-07-09 19:05 UTCEPSS rescore
  23. 2026-07-09 19:05 UTCEPSS rescore
  24. 2026-07-08 15:10 UTCEPSS rescore
  25. 2026-07-07 13:42 UTCEPSS rescore
  26. 2026-07-07 13:42 UTCEPSS rescore
  27. 2026-07-06 16:24 UTCEPSS rescore
  28. 2026-07-06 02:20 UTCEPSS rescore
  29. 2026-07-05 02:26 UTCEPSS rescore
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  43. 2026-06-23 21:30 UTCEPSS rescore
  44. 2026-06-23 17:20 UTCOSV refresh
  45. 2026-06-22 14:23 UTCEPSS rescore
  46. 2026-06-22 14:23 UTCEPSS rescore
  47. 2026-06-21 14:54 UTCEPSS rescore
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  53. 2026-06-18 17:50 UTCEPSS rescore
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  63. 2026-06-11 13:57 UTCEPSS rescore
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  65. 2026-06-10 22:15 UTCEPSS rescore
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  67. 2026-06-08 14:14 UTCEPSS rescore
  68. 2026-06-07 15:22 UTCEPSS rescore
  69. 2026-06-06 23:29 UTCOSV refresh
  70. 2026-06-06 13:45 UTCEPSS rescore
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  74. 2026-06-04 13:10 UTCEPSS rescore
  75. 2026-06-04 13:10 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-39540
    First seen Mar 9, 2016

    Linux Kernel 3.10.0 (CentOS / RHEL 7.1) - visor clie_5_attach Nullpointer Dereference

    Open source ↗

Related CVEs(same vendor)

Frequently asked(5)

What is CVE-2015-7566?
CVE-2015-7566 is a medium vulnerability published on February 8, 2016. The clie5attach function in drivers/usb/serial/visor.c in the Linux kernel through 4.4.1 allows physically proximate attackers to cause a denial of service (NULL pointer dereference and system crash) or possibly have unspecified other impact by inserting a USB device that lacks a bulk-out endpoint.
When was CVE-2015-7566 disclosed?
CVE-2015-7566 was first published in the National Vulnerability Database on February 8, 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-2015-7566 actively exploited?
CVE-2015-7566 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 2% probability of exploitation in the next 30 days, which ranks it in the top 22.7% of all scored CVEs.
What is the CVSS score of CVE-2015-7566?
CVE-2015-7566 has a CVSS v3 base score of 4.6 (NVD).
How do I remediate CVE-2015-7566?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2015-7566, 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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