CVE-2016-3951: n/a vulnerability

CVE-2016-3951: Double free vulnerability in drivers/net/usb/cdc_ncm.c in the Linux kernel before 4.5 allows physically pro...

Double free vulnerability in drivers/net/usb/cdc_ncm.c in the Linux kernel before 4.5 allows physically proximate attackers to cause a denial of service (system crash) or possibly have unspecified other impact by inserting a USB device with an invalid USB descriptor.

UnknownCVSS not scoredNot KEV-listedUpdatedAug 6, 2024, 00:10 UTC (UTC+00:00)

Security readout for executives and security teams

CVE-2016-3951 is a Linux kernel USB networking flaw. A malicious or malformed USB device could crash a vulnerable system when plugged in. The main business risk is local denial of service on Linux endpoints or servers with accessible USB ports. Linux systems running kernels before 4.5, or vendor kernels lacking the backported fix, are the likely exposure. Risk is highest where untrusted people can access USB ports. Treat as a targeted physical-access risk, not an internet-scale emergency. Patch through normal kernel maintenance, and prioritize exposed workstations, kiosks, lab machines, and servers with reachable USB ports. Mitigation focus: Update affected Linux kernels using vendor security advisories.; Confirm the kernel includes the upstream or vendor backported fix.; Restrict physical access to USB ports on sensitive systems..

Prepared: Jun 13, 2026, 20:09 UTC (UTC+00:00)

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

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Vulnerability profileCVE Program record

Severity: Unknown
CVSS: Not scored
Known Exploited: No
Published: May 2, 2016, 10:00 UTC (UTC+00:00)

Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

0CVSS vectors

0Timeline events

0ADP providers

5Source links

CVSS and timeline data

No CVSS vectors or timeline events were available in the normalized CVE source material.

Source materials

CVE List V5 sourceCVE List V5
https://github.com/torvalds/linux/commit/4d06dd537f95683aba3651098ae288b7cbff8274CVE reference · x_refsource_CONFIRM
https://bugzilla.redhat.com/show_bug.cgi?id=1324782CVE reference · x_refsource_CONFIRM
https://github.com/torvalds/linux/commit/1666984c8625b3db19a9abc298931d35ab7bc64bCVE reference · x_refsource_CONFIRM
[netdev] 20160304 Re: Possible double-free in the usbnet driverCVE reference · mailing-list, x_refsource_MLIST

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus

n/an/an/aListed

Weakness

CWE details

No CWE listed

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