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Public proof of conceptFix available

CVE-2016-3955

A public proof of concept exists; no exploitation attested.

  • Published2016-07-03
  • Fixed in4.5.3 · 4.4.9 · 4.1.28 · 3.18.37 · 3.14.68 · 3.12.59
  • WeaknessCWE-119

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

The usbip_recv_xbuff function in drivers/usb/usbip/usbip_common.c in the Linux kernel before 4.5.3 allows remote attackers to cause a denial of service (out-of-bounds write) or possibly have unspecified other impact via a crafted length value in a USB/IP packet.

Timeline

dates in UTC
  1. 2016-07-0321:59CVE publishedNVD
  2. 2026-10-2319:23First public proof of conceptPoC-in-GitHub
  3. 2026-10-2319:23EPSS crossed 10 %FIRST EPSS

Observed activity

isMalicious corpus · updated 2026-10-23 21:37 UTC
Indicators tagged with this CVE, per day0 indicators over 7 days
Block these indicators
  • Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2016-3955?format=txt
  • CSV export: https://api.ismalicious.com/edl/cve/CVE-2016-3955?format=csv
  • TAXII collection of exploited CVEs
  • The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD
Linux linux kernel
BranchAffectedFixed in
4.5≥ 4.5, < 4.5.34.5.3
4.x≥ 4.2, < 4.4.94.4.9
4.1≥ 3.19, < 4.1.284.1.28
3.x≥ 3.17, < 3.18.373.18.37
3.x≥ 3.13, < 3.14.683.14.68
3.x≥ 3.11, < 3.12.593.12.59
3.x≥ 3.3, < 3.10.1023.10.102
3.2< 3.2.803.2.80
Canonical ubuntu linux
BranchAffectedFixed in
12.4= 12.04no fix published
14.4= 14.04no fix published
15.10= 15.10no fix published
Debian debian linux
BranchAffectedFixed in
8.0= 8.0no fix published

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Fix

  1. Update Linux linux kernel to 4.5.3 · 4.4.9 · 4.1.28 · 3.18.37 · 3.14.68 · 3.12.59 · 3.10.102 · 3.2.80

Advisories and patches

Detection

read 2026-10-23 19:23 UTC
Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof-of-concept repositories
1 repository, unverifiedpqsec/uboatdemo
PoC-in-GitHub

Sources

  • NVDCVSS 3.19.8read 2026-10-23
  • NVDCVSS 2.010read 2026-10-23
  • NVDweakness (CWE)CWE-119read 2026-10-23
  • FIRST EPSSEPSS score25.3 %read 2026-10-23
  • PoC-in-GitHubproof of concept1read 2026-10-23

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Published
2016-07-03
Last Modified
2026-06-17
NVD status
Modified

Frequently asked questions

What is CVE-2016-3955?

The usbip_recv_xbuff function in drivers/usb/usbip/usbip_common.c in the Linux kernel before 4.5.3 allows remote attackers to cause a denial of service (out-of-bounds write) or possibly have unspecified other impact via a crafted length value in a USB/IP packet.

Is CVE-2016-3955 actively exploited?

Active exploitation of CVE-2016-3955 has not been confirmed. Its EPSS score was 25.3% on 2026-10-23, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2016-3955?

CVE-2016-3955 has a CVSS v3 base score of 9.8 (CRITICAL severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

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Surveillance reads the versions in your stack — a domain, a lockfile or a list — checks each CVE against the ranges its sources publish, and alerts you when one you run is exploited or enters CISA KEV. A version it cannot read stays « version not verified ».

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