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CVE-2015-8558

Published: 16 December 2015

The ehci_process_itd function in hw/usb/hcd-ehci.c in QEMU allows local guest OS administrators to cause a denial of service (infinite loop and CPU consumption) via a circular isochronous transfer descriptor (iTD) list.

Priority

Medium

Cvss 3 Severity Score

5.5

Score breakdown

Status

Package Release Status
qemu
Launchpad, Ubuntu, Debian
precise Does not exist

trusty
Released (2.0.0+dfsg-2ubuntu1.22)
upstream Needs triage

vivid Ignored
(end of life)
wily
Released (1:2.3+dfsg-5ubuntu9.2)
Patches:
upstream: http://git.qemu.org/?p=qemu.git;a=commit;h=156a2e4dbffa85997636a7a39ef12da6f1b40254
qemu-kvm
Launchpad, Ubuntu, Debian
precise
Released (1.0+noroms-0ubuntu14.27)
trusty Does not exist

upstream Needs triage

vivid Does not exist

wily Does not exist

Severity score breakdown

Parameter Value
Base score 5.5
Attack vector Local
Attack complexity Low
Privileges required Low
User interaction None
Scope Unchanged
Confidentiality None
Integrity impact None
Availability impact High
Vector CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H