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CVE-2016-1922

Good to know:

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Date: December 29, 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.

Language: C

Severity Score

Related Resources (14)

https://lists.gnu.org/archive/html/qemu-devel/2016-01/msg02812.html
https://access.redhat.com/security/cve/CVE-2016-1922
http://www.debian.org/security/2016/dsa-3469
https://security.gentoo.org/glsa/201604-01
https://security-tracker.debian.org/tracker/CVE-2016-1922
https://people.canonical.com/~ubuntu-security/cve/CVE-2016-1922
http://www.securityfocus.com/bid/81058
http://www.openwall.com/lists/oss-security/2016/01/16/6
http://www.openwall.com/lists/oss-security/2016/01/16/1
http://www.debian.org/security/2016/dsa-3470
http://www.debian.org/security/2016/dsa-3471
https://bugzilla.redhat.com/show_bug.cgi?id=1283934
https://nvd.nist.gov/vuln/detail/CVE-2016-1922
https://www.mend.io/vulnerability-database/CVE-2016-1922

Severity Score

Weakness Type (CWE)

NULL Pointer Dereference

CWE-476

CVSS v3.1

Base Score:
Attack Vector (AV): LOCAL
Attack Complexity (AC): LOW
Privileges Required (PR): LOW
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): NONE
Integrity (I): NONE
Availability (A): HIGH

CVSS v2

Base Score:
Access Vector (AV): LOCAL
Access Complexity (AC): LOW
Authentication (AU): NONE
Confidentiality (C): NONE
Integrity (I): NONE
Availability (A): PARTIAL
Additional information:

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