Home/CVE/Quick Emulator (Qemu) built with the 'chardev' backend support is vulnerable to a use after free issue. It could occur w
CVE

CVE-2016-9923

Quick Emulator (Qemu) built with the 'chardev' backend support is vulnerable to a use after free issue. It could occur w

Quick Emulator (Qemu) built with the 'chardev' backend support is vulnerable to a use after free issue. It could occur while hotplug and unplugging the device in the guest. A guest user/process could use this flaw to crash a Qemu process on the host resulting in DoS.

MEDIUM · CVSS 5.5 EPSS 0.00151
Monitor
  • No active-exploitation, high-EPSS, or public-exploit signals - routine patching cadence
Sigma rules1 YARA rules0
⬡

Weakness Classification

CWE-416Use After Free
▤

Affected Products & Versions

1
qemu<= 2.7.1
◈

Sigma Hunt Rules

1
Exact rules name this CVE ID. Product rules name an affected product in their title. Related rules cover techniques used by actors who exploited this CVE. Showing the most relevant matches; the complete related set is on the full drill-down.
productmediumPotentially Suspicious Usage Of Qemu
▣

Scoring & Timeline

5.5
MEDIUM · CVSS v3.1 · secalert@redhat.com
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD23 Dec 2016 · 10:59 PM
CVSS VectorCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
🔗

References & Sources

3
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
http://www.openwall.com/lists/oss-security/2016/12/09/2Mailing ListPatchThird Party Advisory
http://www.securityfocus.com/bid/94827Third Party AdvisoryVDB Entry
https://security.gentoo.org/glsa/201701-49Third Party Advisory
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