CVE-2016-1922

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.

CVSS v3.0 5.5 MEDIUM
CVSS v2.0 2.1 LOW

5.5^/10

CVSS v3.0 : MEDIUM

Vector :

Exploitability : 1.8 / Impact : 3.6

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

2.1^/10

CVSS v2.0 : LOW

Vector : AV:L/AC:L/Au:N/C:N/I:N/A:P

Exploitability : 3.9 / Impact : 2.9

Access Vector LOCAL

Access Complexity LOW

Authentication NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact PARTIAL

References

Link	Resource
https://lists.gnu.org/archive/html/qemu-devel/2016-01/msg02812.html	Patch Vendor Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1283934	Issue Tracking Third Party Advisory
http://www.securityfocus.com/bid/81058	Third Party Advisory VDB Entry
http://www.openwall.com/lists/oss-security/2016/01/16/6	Mailing List Third Party Advisory
http://www.openwall.com/lists/oss-security/2016/01/16/1	Mailing List Third Party Advisory
https://security.gentoo.org/glsa/201604-01	Third Party Advisory
http://www.debian.org/security/2016/dsa-3471	Third Party Advisory
http://www.debian.org/security/2016/dsa-3470	Third Party Advisory
http://www.debian.org/security/2016/dsa-3469	Third Party Advisory

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Configurations

Configuration 1 (hide)

cpe:2.3:a:qemu:qemu:*:*:*:*:*:*:*:*

Configuration 2 (hide)

OR	cpe:2.3:o:debian:debian_linux:7.0:::::::*
	cpe:2.3:o:debian:debian_linux:8.0:::::::*

Information

Published : 2016-12-29 14:59

Updated : 2020-11-10 10:46

NVD link : CVE-2016-1922

Mitre link : CVE-2016-1922

JSON object : View

CWE

CWE-476

NULL Pointer Dereference

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Products Affected

debian

debian_linux

qemu

qemu

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