CVE-2016-9923
Published: 23 December 2016
Quick Emulator (Qemu) built with the 'chardev' backend support is vulnerable to a use after free issue. It could occur while hotplug and unplugging the device in the guest. A guest user/process could use this flaw to crash a Qemu process on the host resulting in DoS.
Notes
Author | Note |
---|---|
mdeslaur | complex backport, we're not going to dix this in xenial and older |
Priority
Status
Package | Release | Status |
---|---|---|
qemu Launchpad, Ubuntu, Debian |
artful |
Not vulnerable
(1:2.8+dfsg-3ubuntu2)
|
precise |
Does not exist
|
|
trusty |
Ignored
|
|
upstream |
Needed
|
|
xenial |
Ignored
|
|
yakkety |
Ignored
(end of life)
|
|
zesty |
Not vulnerable
(1:2.8+dfsg-3ubuntu2)
|
|
Patches: upstream: http://git.qemu-project.org/?p=qemu.git;a=commit;h=a4afa548fc6dd9842ed86639b4d37d4d1c4ad480 |
||
qemu-kvm Launchpad, Ubuntu, Debian |
artful |
Does not exist
|
precise |
Ignored
(end of life)
|
|
trusty |
Does not exist
|
|
upstream |
Needed
|
|
xenial |
Does not exist
|
|
yakkety |
Does not exist
|
|
zesty |
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 |