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CVE-2016-8578

Published: 4 November 2016

The v9fs_iov_vunmarshal function in fsdev/9p-iov-marshal.c in QEMU (aka Quick Emulator) allows local guest OS administrators to cause a denial of service (NULL pointer dereference and QEMU process crash) by sending an empty string parameter to a 9P operation.

Notes

AuthorNote
tyhicks
Privileged user inside the guest can trigger a DoS of the QEMU host
process
In Trusty and Xenial, the vulnerable code is in the v9fs_unmarshal()
function of fsdev/virtio-9p-marshal.c
Priority

Low

CVSS 3 base score: 6.0

Status

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

trusty
Released (2.0.0+dfsg-2ubuntu1.30)
upstream Needed

xenial
Released (1:2.5+dfsg-5ubuntu10.6)
yakkety
Released (1:2.6.1+dfsg-0ubuntu5.1)
Patches:
upstream: http://git.qemu.org/?p=qemu.git;a=commit;h=ba42ebb863ab7d40adc79298422ed9596df8f73a
qemu-kvm
Launchpad, Ubuntu, Debian
precise Not vulnerable
(code not present)
trusty Does not exist

upstream Needs triage

xenial Does not exist

yakkety Does not exist