CVE-2017-6178: The IofCallDriver function in USBPcap 1.1.0.0 allows local users to gain privileges via a crafted 0x00090028 I

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HIGH 7.8DOWNGRADE

CVE-2017-6178 is a high-severity flaw (CVSS 7.8) affecting usbpcap. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

The IofCallDriver function in USBPcap 1.1.0.0 allows local users to gain privileges via a crafted 0x00090028 IOCTL call, which triggers a NULL pointer dereference.

Why this priority

High severity
Public exploit reference

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	7.8 (High)
Attack vector	Local
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	1.0% (top 36%)
CISA exploited list	No
Weakness	CWE-476
Published	2017-03-20
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: usbpcap project

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2017-03-20 16:59 UTCPublished CVE record published
2026-06-17 01:21 UTCUpdated Record last modified

usbpcap project usbpcap DOWNGRADE

Affected: 1.1.0.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.1.0.0

1. Check installed version

apt-cache policy usbpcap || rpm -q usbpcap || usbpcap --version

2. No fixed release: DOWNGRADE to a release before 1.1.0.0 (Debian / Ubuntu)

apt-cache madison usbpcap sudo apt install usbpcap=<VERSION_BEFORE_1.1.0.0> sudo apt-mark hold usbpcap

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list usbpcap sudo dnf downgrade usbpcap-<VERSION_BEFORE_1.1.0.0> sudo dnf versionlock add usbpcap

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Public exploits and detection

Public code exists for this CVE. Treat unpatched systems as at risk, and only run PoCs in a lab.

Exploit-DB: USBPcap 1.1.0.0 (WireShark 2.2.5) - Local Privilege Escalation

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2017-6178?

usbpcap: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2017-6178 being exploited?

CVE-2017-6178 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2017-6178 affect?

CVE-2017-6178 affects usbpcap. Severity is high (CVSS 7.8). The IofCallDriver function in USBPcap 1.1.0.0 allows local users to gain privileges via a crafted 0x00090028 IOCTL call, which triggers a NULL pointer dereference.

How urgent is CVE-2017-6178?

Priority 48/100. High severity; Public exploit reference

References

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