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CVE-2016-2391

5.0 · MEDIUM

The ohci_bus_start function in the USB OHCI emulation support (hw/usb/hcd-ohci.c) in QEMU allows local guest OS administrators to cause a denial of service (NULL pointer dereference and QEMU proces…

Published Jun 16, 2016CWE-476EPSS 0.40%

Overview

CVE-2016-2391 is a medium-severity vulnerability. It was published on June 16, 2016 and has a CVSS 3.1 base score of 5.0 (MEDIUM).

This vulnerability has a CVSS 3.1 base score of 5.0, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

Technical description

The ohci_bus_start function in the USB OHCI emulation support (hw/usb/hcd-ohci.c) in QEMU allows local guest OS administrators to cause a denial of service (NULL pointer dereference and QEMU process crash) via vectors related to multiple eof_timers.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refgit.qemu.org/?p=qemu.git%3Ba=commit%3Bh=fa1298c2d623522eda7b4f1f721fcb935abb7360Refwww.openwall.com/lists/oss-security/2016/02/16/2Refwww.securityfocus.com/bid/83263Refwww.ubuntu.com/usn/USN-2974-1Refbugzilla.redhat.com/show_bug.cgi?id=1304794Reflists.debian.org/debian-lts-announce/2018/11/msg00038.htmlReflists.gnu.org/archive/html/qemu-devel/2016-02/msg03374.htmlRefgit.qemu.org/?p=qemu.git%3Ba=commit%3Bh=fa1298c2d623522eda7b4f1f721fcb935abb7360Refwww.openwall.com/lists/oss-security/2016/02/16/2Refwww.securityfocus.com/bid/83263

How CyberStrike helps

Frequently asked questions

What is CVE-2016-2391?

CVE-2016-2391 is a medium-severity vulnerability. It was published on June 16, 2016 and has a CVSS 3.1 base score of 5.0 (MEDIUM).

How severe is CVE-2016-2391?

This vulnerability has a CVSS 3.1 base score of 5.0, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2016-2391?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2016-2391?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2016-2391 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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