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NVD / CVE Program· CNA mitre

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…

CriticalCVSS 9.8 · v3.1—Proof of concept Fix available

Noroxi assessment

Priority: Plan (action score 47/100)

  • Public proof-of-concept code exists (GitHub); there is no record of exploitation in the wild.
  • Probability of exploitation in the next 30 days: 25.2% (FIRST EPSS); higher than 97.9% of all records.
  • Anyone who can reach it over the internet can trigger it. No account or password is required. No user action is required. No special conditions are required; it is repeatable.
  • Fixed version: linux (Debian:12) 4.5.2-1; linux (Debian:7) 3.2.81-1; kernel-pae (SUSE:Linux Enterprise Point of Sale 11 SP3) 3.0.101-0.47.86.1.

Add it to your regular patch cycle. Upgrade to linux (Debian:12) 4.5.2-1; linux (Debian:7) 3.2.81-1; kernel-pae (SUSE:Linux Enterprise Point of Sale 11 SP3) 3.0.101-0.47.86.1 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

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.

Published
Jul 3, 2016
Updated
Jun 16, 2026
EPSS
25.2% · 97th percentile

Report tools

JSON

Action score

47

Plan

Add it to your regular patch cycle.

CVSS
39 / 40 · 9.8 / 10
CISA KEV
0 / 30 · Not listed
EPSS
8 / 30 · 25.2%

Get told when this record changes

  • Not in KEV: no record of exploitation in the wild
  • Proof of concept exists, no weaponized module
  • A fix has been released

If any of these changes, we'll tell you in the daily email digest.

Follow CVE-2016-3955

When you'll hear from us

  • when it enters CISA KEV
  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • when EPSS rises 20 points in a week

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

VendorProduct
linuxlinux kernel
canonicalubuntu linux
debiandebian linux

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • canonical ubuntu linux12.04
  • canonical ubuntu linux14.04
  • canonical ubuntu linux15.10
  • debian debian linux8.0
  • linux linux kernel3.3 and later · before 3.10.102
  • linux linux kernel3.11 and later · before 3.12.59
  • linux linux kernel3.13 and later · before 3.14.68
  • linux linux kernel3.17 and later · before 3.18.37
+4 more rows
  • linux linux kernel3.19 and later · before 4.1.28
  • linux linux kernel4.2 and later · before 4.4.9
  • linux linux kernel4.5 and later · before 4.5.3
  • linux linux kernelbefore 3.2.80

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
Debian:12linuxbefore 4.5.2-14.5.2-1
Debian:7linuxbefore 3.2.81-13.2.81-1
SUSE:Linux Enterprise Point of Sale 11 SP3kernel-paebefore 3.0.101-0.47.86.13.0.101-0.47.86.1
SUSE:OpenStack Cloud 5kernel-bigsmpbefore 3.0.101-0.47.86.13.0.101-0.47.86.1
SUSE:OpenStack Cloud 5kernel-defaultbefore 3.0.101-0.47.86.13.0.101-0.47.86.1
SUSE:OpenStack Cloud 5kernel-ec2before 3.0.101-0.47.86.13.0.101-0.47.86.1
SUSE:OpenStack Cloud 5kernel-sourcebefore 3.0.101-0.47.86.13.0.101-0.47.86.1
SUSE:OpenStack Cloud 5kernel-symsbefore 3.0.101-0.47.86.13.0.101-0.47.86.1
SUSE:OpenStack Cloud 5kernel-tracebefore 3.0.101-0.47.86.13.0.101-0.47.86.1
SUSE:OpenStack Cloud 5kernel-xenbefore 3.0.101-0.47.86.13.0.101-0.47.86.1

Same product

linux: all records

Other highest-scoring records for the same primary product.

  • CVE-2026-31431crypto: algif_aead - Revert to operating out-of-placeKEV
    90Now
  • CVE-2022-0847A flaw was found in the way the "flags" member of the new pipe buffer structure was lacking proper initialization in copy_page_to_iter_pipe…KEV
    89Now
  • CVE-2021-22555Heap Out-Of-Bounds Write in Netfilter IP6T_SO_SET_REPLACEKEV
    85Now

Published before and after this one in the same product

  • ← EarlierCVE-2012-6703Jun 29, 2016 · Integer overflow in the snd_compr_allocate_buffer function in sound/core/compress_offload.c in the ALSA subsystem in the Linux kernel…
    31Monitor
  • ← EarlierCVE-2016-1237Jun 29, 2016 · nfsd in the Linux kernel through 4.6.3 allows local users to bypass intended file-permission restrictions by setting a POSIX ACL, related…
    22Monitor
  • Later →CVE-2016-4997Jul 3, 2016 · The compat IPT_SO_SET_REPLACE and IP6T_SO_SET_REPLACE setsockopt implementations in the netfilter subsystem in the Linux kernel before…
    40Plan

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
debian:linux4.5.2-1 · Debian:12Package registry (OSV)
suse:kernel-bigsmp3.0.101-0.47.86.1 · SUSE:OpenStack Cloud 5Package registry (OSV)
suse:kernel-default3.0.101-0.47.86.1 · SUSE:OpenStack Cloud 5Package registry (OSV)
suse:kernel-ec23.0.101-0.47.86.1 · SUSE:OpenStack Cloud 5Package registry (OSV)
suse:kernel-pae3.0.101-0.47.86.1 · SUSE:Linux Enterprise Point of Sale 11 SP3Package registry (OSV)
suse:kernel-source3.0.101-0.47.86.1 · SUSE:OpenStack Cloud 5Package registry (OSV)
suse:kernel-syms3.0.101-0.47.86.1 · SUSE:OpenStack Cloud 5Package registry (OSV)
suse:kernel-trace3.0.101-0.47.86.1 · SUSE:OpenStack Cloud 5Package registry (OSV)
suse:kernel-xen3.0.101-0.47.86.1 · SUSE:OpenStack Cloud 5Package registry (OSV)

Exploit status

Proof of concept available

A public proof of concept or detection signature exists. Exploit knowledge is out there; don't delay patching.

Evidence

  • Proof-of-concept repository on GitHub ×1

Noroxi does not host or link to exploit code. Metasploit module names and Nuclei template ids are shown (names, not code); Exploit-DB entries and PoC repositories are given as counts only.

Public exploit evidence
SourceKindDate
Proof-of-concept repository on GitHubstars:52017-03-29

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

  1. Published
  2. First PoC+268 d
  3. TodayNov 15, 2026+3787 d

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

Not on record for this CVE: EPSS history · researcher credit · variant or chain candidate · public bounty program.

Technical details

Attack conditions

  • Anyone who can reach it over the internet can trigger it.
  • No account or password is required.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
high · data can be read
Integrity
high · data or configuration can be modified
Availability
high · the service can be disrupted
Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality impact
High
Integrity impact
High
Availability impact
High

Weakness class (CWE)

CWE-119 · Improper Restriction of Operations within the Bounds of a Memory Buffer

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

nvd-primary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

ATT&CK techniques

—

References

Show all references (16 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records