HOME VULNERABILITIESCVE-2016-1922

MEDIUM

CVE-2016-1922

CWE-476Published: December 29, 2016· Updated: Jun 17, 2026

5.5

CVSS v3.1

Official 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.

Technical Analysis

CVE-2016-1922 requires local access, meaning attackers must already have a foothold on the target system.

Exploitation requires low privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

A successful exploit results in availability disruption (denial of service), with a CVSS base score of 5.5.

CVSS v3.1 Vector Breakdown

Exploitability

Attack VectorLocal

Attack ComplexityLow

Privileges Req.Low

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityNone

AvailabilityHigh

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Affected Vendors & Products

Debian1 product(s)

debian linux

qemu1 product(s)

qemu

Source: NVD CPE · 3 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time

Offensive Security exploit database

GitHub PoC Search

Community PoC repositories

Rapid7 / Metasploit

Metasploit module search

Security advisories & exploits

Official NIST entry

CVE Program entry

External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

PATCHhttps://lists.gnu.org/archive/html/qemu-devel/2016-01/msg02812.html

PATCHhttps://lists.gnu.org/archive/html/qemu-devel/2016-01/msg02812.html

ADVISORYhttp://www.debian.org/security/2016/dsa-3469

ADVISORYhttp://www.debian.org/security/2016/dsa-3470

ADVISORYhttp://www.debian.org/security/2016/dsa-3471

ADVISORYhttp://www.openwall.com/lists/oss-security/2016/01/16/1

ADVISORYhttp://www.openwall.com/lists/oss-security/2016/01/16/6

ADVISORYhttp://www.securityfocus.com/bid/81058

ADVISORYhttps://bugzilla.redhat.com/show_bug.cgi?id=1283934

ADVISORYhttps://security.gentoo.org/glsa/201604-01

ADVISORYhttp://www.debian.org/security/2016/dsa-3469

ADVISORYhttp://www.debian.org/security/2016/dsa-3470

ADVISORYhttp://www.debian.org/security/2016/dsa-3471

ADVISORYhttp://www.openwall.com/lists/oss-security/2016/01/16/1

ADVISORYhttp://www.openwall.com/lists/oss-security/2016/01/16/6

ADVISORYhttp://www.securityfocus.com/bid/81058

ADVISORYhttps://bugzilla.redhat.com/show_bug.cgi?id=1283934

ADVISORYhttps://security.gentoo.org/glsa/201604-01

All References (18)

→

http://www.debian.org/security/2016/dsa-3469Third Party Advisory

→

http://www.debian.org/security/2016/dsa-3470Third Party Advisory

→

http://www.debian.org/security/2016/dsa-3471Third Party Advisory

→

http://www.openwall.com/lists/oss-security/2016/01/16/1Mailing List · Third Party Advisory

→

http://www.openwall.com/lists/oss-security/2016/01/16/6Mailing List · Third Party Advisory

→

http://www.securityfocus.com/bid/81058Third Party Advisory · VDB Entry

→

https://bugzilla.redhat.com/show_bug.cgi?id=1283934Issue Tracking · Third Party Advisory

→

https://lists.gnu.org/archive/html/qemu-devel/2016-01/msg02812.htmlPatch · Vendor Advisory

→

https://security.gentoo.org/glsa/201604-01Third Party Advisory

→

http://www.debian.org/security/2016/dsa-3469Third Party Advisory

→

http://www.debian.org/security/2016/dsa-3470Third Party Advisory

→

http://www.debian.org/security/2016/dsa-3471Third Party Advisory

→

http://www.openwall.com/lists/oss-security/2016/01/16/1Mailing List · Third Party Advisory

→

http://www.openwall.com/lists/oss-security/2016/01/16/6Mailing List · Third Party Advisory

→

http://www.securityfocus.com/bid/81058Third Party Advisory · VDB Entry

Quick Facts

CVE IDCVE-2016-1922

CVSS Score5.5 / 10

SeverityMEDIUM

WeaknessCWE-476

CISA KEVNo

Affected2 vendor(s)

PublishedDec 29, 2016

Related CVEs (CWE-476)

Recommended Actions

→Apply vendor patches immediately
→Monitor CVE-2016-1922 in threat intel feeds
→Review IDS/IPS signatures for exploitation attempts

Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.

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