CVE-2016-9923

Severity: medium (CVSS 5.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.3% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2016-12-23 · updated 2026-06-17
Weakness: CWE-416

Description

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.

Affected products

QEMU: through 2.7.1

References

http://www.openwall.com/lists/oss-security/2016/12/09/2
http://www.securityfocus.com/bid/94827
https://security.gentoo.org/glsa/201701-49
http://www.openwall.com/lists/oss-security/2016/12/09/2
http://www.securityfocus.com/bid/94827
https://security.gentoo.org/glsa/201701-49

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