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CVE-2016-1922

MEDIUM
5.5
CVSS Score
Published: December 29, 2016 at 10:00 PM UTC
Updated: June 17, 2026 at 12:42 AM UTC
2 products affected across 2 vendorsDebian LinuxQEMU

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Severity
MEDIUM5.5
Exploit prediction
EPSS 0.4%

Description

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

References (9)

Vendor Advisoryx_refsource_DEBIANThird Party Advisory
Source: [email protected]
http://www.debian.org/security/2016/dsa-3469
Vendor Advisoryx_refsource_DEBIANThird Party Advisory
Source: [email protected]
http://www.debian.org/security/2016/dsa-3470
Vendor Advisoryx_refsource_DEBIANThird Party Advisory
Source: [email protected]
http://www.debian.org/security/2016/dsa-3471
Mailing Listx_refsource_MLISTThird Party Advisory
Source: [email protected]
http://www.openwall.com/lists/oss-security/2016/01/16/1
Mailing Listx_refsource_MLISTThird Party Advisory
Source: [email protected]
http://www.openwall.com/lists/oss-security/2016/01/16/6
VDB Entryx_refsource_BIDThird Party Advisory
Source: [email protected]
http://www.securityfocus.com/bid/81058
x_refsource_CONFIRMIssue TrackingThird Party Advisory
Source: [email protected]
https://bugzilla.redhat.com/show_bug.cgi?id=1283934
Mailing Listx_refsource_MLISTPatchVendor Advisory
Source: [email protected]
https://lists.gnu.org/archive/html/qemu-devel/2016-01/msg02812.html

CVSS

5.5MEDIUM[email protected]
Attack Vector
LOCAL
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-476

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