CVE-2016-1922
Published: 19 January 2016
QEMU (aka Quick Emulator) built with the TPR optimization for 32-bit Windows guests support is vulnerable to a null pointer dereference flaw. It occurs while doing I/O port write operations via hmp interface. In that, 'current_cpu' remains null, which leads to the null pointer dereference. A user or process could use this flaw to crash the QEMU instance, resulting in DoS issue.
Priority
Status
| Package | Release | Status |
|---|---|---|
|
qemu Launchpad, Ubuntu, Debian |
precise |
Does not exist
|
| trusty |
Released
(2.0.0+dfsg-2ubuntu1.22)
|
|
| upstream |
Needed
|
|
| 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=4c1396cb576c9b14425558b73de1584c7a9735d7 |
||
|
qemu-kvm Launchpad, Ubuntu, Debian |
precise |
Not vulnerable
(code not present)
|
| trusty |
Does not exist
|
|
| upstream |
Not vulnerable
|
|
| 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 |