How severe is CVE-2016-3951?

CVE-2016-3951 has a CVSS 3.x base score of 4.6, rated medium severity. It is exploitable over physical access with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2016-3951 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (44th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2016-3951?

CVE-2016-3951 primarily affects Novell Suse Linux Enterprise Software Development Kit. In total, 15 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2016-3951?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2016-3951 published?

CVE-2016-3951 was published on 2016-05-02 and last updated on 2026-06-17.

CVE-2016-3951

CVE-2016-3951 is a medium-severity vulnerability in Novell Suse Linux Enterprise Software Development Kit with a CVSS 3.x base score of 4.6. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: Medium (CVSS 3.x base score 4.6)
CVSS v2: 4.9
EPSS exploit prediction: 1% (44th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Novell Suse Linux Enterprise Software Development Kit
Published: 2016-05-02
Last modified: 2026-06-17

Description

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.

Frequently asked questions

What is CVE-2016-3951?: 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.
How severe is CVE-2016-3951?: CVE-2016-3951 has a CVSS 3.x base score of 4.6, rated medium severity. It is exploitable over physical access with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2016-3951 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (44th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2016-3951?: CVE-2016-3951 primarily affects Novell Suse Linux Enterprise Software Development Kit. In total, 15 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2016-3951?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2016-3951 published?: CVE-2016-3951 was published on 2016-05-02 and last updated on 2026-06-17.

References

Affected products (15)

cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:lts:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:15.10:*:*:*:*:*:*:*
cpe:2.3:a:novell:suse_linux_enterprise_software_development_kit:12.0:sp1:*:*:*:*:*:*
cpe:2.3:a:suse:suse_linux_enterprise_software_development_kit:12.0:*:*:*:*:*:*:*
cpe:2.3:o:novell:suse_linux_enterprise_desktop:12:*:*:*:*:*:*:*
cpe:2.3:o:novell:suse_linux_enterprise_desktop:12:sp1:*:*:*:*:*:*
cpe:2.3:o:novell:suse_linux_enterprise_live_patching:12.0:*:*:*:*:*:*:*
cpe:2.3:o:novell:suse_linux_enterprise_module_for_public_cloud:12:*:*:*:*:*:*:*
cpe:2.3:o:novell:suse_linux_enterprise_real_time_extension:12:sp1:*:*:*:*:*:*
cpe:2.3:o:novell:suse_linux_enterprise_server:12.0:*:*:*:*:*:*:*
cpe:2.3:o:novell:suse_linux_enterprise_server:12.0:sp1:*:*:*:*:*:*
cpe:2.3:o:novell:suse_linux_enterprise_workstation_extension:12.0:*:*:*:*:*:*:*
cpe:2.3:o:novell:suse_linux_enterprise_workstation_extension:12.0:sp1:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:4.5.0:rc7:*:*:*:*:*:*

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