Your submission was sent successfully! Close

Thank you for contacting us. A member of our team will be in touch shortly. Close

You have successfully unsubscribed! Close

Thank you for signing up for our newsletter!
In these regular emails you will find the latest updates about Ubuntu and upcoming events where you can meet our team.Close

CVE-2016-2391

Publication date 17 February 2016

Last updated 24 July 2024

Ubuntu priority

Low

Why this priority?

Cvss 3 Severity Score

5.0 · Medium

Score breakdown

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.

Read the notes from the security team

Status

Package Ubuntu Release Status
qemu 16.04 LTS xenial
Fixed 1:2.5+dfsg-5ubuntu10.1
15.10 wily
Fixed 1:2.3+dfsg-5ubuntu9.4
15.04 vivid Ignored end of life, was needed
14.04 LTS trusty
Fixed 2.0.0+dfsg-2ubuntu1.24
12.04 LTS precise Not in release
qemu-kvm 16.04 LTS xenial Not in release
15.10 wily Not in release
15.04 vivid Not in release
14.04 LTS trusty Not in release
12.04 LTS precise
Fixed 1.0+noroms-0ubuntu14.28

Notes

tyhicks

privileged users inside the guest can trigger a DoS but they could also simply shut down the guest

mdeslaur

in hw/usb-ohci.c in precise

Patch details

For informational purposes only. We recommend not to cherry-pick updates. How can I get the fixes?

Package Patch details
qemu

Severity score breakdown

Parameter Value
Base score 5.0 · Medium
Attack vector Local
Attack complexity Low
Privileges required Low
User interaction Required
Scope Unchanged
Confidentiality None
Integrity impact None
Availability impact High
Vector CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:H