CVE-2016-9923

Published: Dec 23, 2016Modified: May 6, 2026

5.5

Vector

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

Exploitability: 1.8 / Impact: 3.6

Source: NVD

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 (1)

Products: Qemu: Qemu

1 product

Configuration A

1 vulnerable

Vulnerable Software	Affected Versions
Qemu Qemu	Up to 2.7.1

Related CWEs

The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.

References (6)

http://www.openwall.com/lists/oss-security/2016/12/09/2

Source: secalert@redhat.com

Mailing ListPatchThird Party Advisory

http://www.securityfocus.com/bid/94827

Source: secalert@redhat.com

Third Party AdvisoryVDB Entry

https://security.gentoo.org/glsa/201701-49

Source: secalert@redhat.com

Third Party Advisory

http://www.openwall.com/lists/oss-security/2016/12/09/2

Source: af854a3a-2127-422b-91ae-364da2661108

Mailing ListPatchThird Party Advisory

http://www.securityfocus.com/bid/94827

Source: af854a3a-2127-422b-91ae-364da2661108

Third Party AdvisoryVDB Entry

https://security.gentoo.org/glsa/201701-49

Source: af854a3a-2127-422b-91ae-364da2661108

Third Party Advisory

Timeline

No history available yet.