CVE-2016-1922
5.5 Medium
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
6.4 Medium
AI Score
Confidence
High
2.1 Low
CVSS2
Access Vector
LOCAL
Access Complexity
LOW
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
AV:L/AC:L/Au:N/C:N/I:N/A:P
0.001 Low
EPSS
Percentile
25.6%
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.
| CPE | Name | Operator | Version |
|---|---|---|---|
| qemu:qemu | qemu | le | 2.5.1.1 |
| debian:debian_linux | debian debian linux | eq | 8.0 |
| debian:debian_linux | debian debian linux | eq | 7.0 |
References
www.debian.org/security/2016/dsa-3469
www.debian.org/security/2016/dsa-3470
www.debian.org/security/2016/dsa-3471
www.openwall.com/lists/oss-security/2016/01/16/1
www.openwall.com/lists/oss-security/2016/01/16/6
www.securityfocus.com/bid/81058
bugzilla.redhat.com/show_bug.cgi?id=1283934
lists.gnu.org/archive/html/qemu-devel/2016-01/msg02812.html
security.gentoo.org/glsa/201604-01
Related
5.5 Medium
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
6.4 Medium
AI Score
Confidence
High
2.1 Low
CVSS2
Access Vector
LOCAL
Access Complexity
LOW
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
AV:L/AC:L/Au:N/C:N/I:N/A:P
0.001 Low
EPSS
Percentile
25.6%