CVE-2016-9913 : Memory leak in the v9fs_device_unrealize_common function in hw/9pfs/9p.c in QEMU

Memory leak in the v9fs_device_unrealize_common function in hw/9pfs/9p.c in QEMU (aka Quick Emulator) allows local privileged guest OS users to cause a denial of service (host memory consumption and possibly QEMU process crash) via vectors involving the order of resource cleanup.

Published 2016-12-29 22:59:01

Updated 2023-02-12 23:27:24

Source Red Hat, Inc.

View at NVD, CVE.org

Vulnerability category: Denial of service

Products affected by CVE-2016-9913

Qemu » Qemu
Versions up to, including, (<=) 2.7.1
cpe:2.3:a:qemu:qemu:*:*:*:*:*:*:*:*
Matching versions
Qemu » Qemu » Version: 2.8.0 Update RC0
cpe:2.3:a:qemu:qemu:2.8.0:rc0:*:*:*:*:*:*
Matching versions
Qemu » Qemu » Version: 2.8.0 Update RC1
cpe:2.3:a:qemu:qemu:2.8.0:rc1:*:*:*:*:*:*
Matching versions

Exploit prediction scoring system (EPSS) score for CVE-2016-9913

EPSS FAQ

0.06%

Probability of exploitation activity in the next 30 days EPSS Score History

~ 25 %

Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2016-9913

Base Score	Base Severity	CVSS Vector	Exploitability Score	Impact Score	Score Source
4.9	MEDIUM	AV:L/AC:L/Au:N/C:N/I:N/A:C	3.9	6.9	NIST
Access Vector: Local Access Complexity: Low Authentication: None Confidentiality Impact: None Integrity Impact: None Availability Impact: Complete
6.5	MEDIUM	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H	2.0	4.0	NIST
Attack Vector: Local Attack Complexity: Low Privileges Required: Low User Interaction: None Scope: Changed Confidentiality: None Integrity: None Availability: High

CWE ids for CVE-2016-9913

CWE-401 Missing Release of Memory after Effective Lifetime

The product does not sufficiently track and release allocated memory after it has been used, which slowly consumes remaining memory.

Assigned by: nvd@nist.gov (Primary)

References for CVE-2016-9913

https://lists.gnu.org/archive/html/qemu-devel/2016-11/msg03278.html

[Qemu-devel] [PATCH v3 0/4] 9pfs: add cleanup operation in handle/proxy
Patch;Vendor Advisory

CVEs referencing this url
http://www.securityfocus.com/bid/94729

QEMU VirtFS Multiple Denial of Service Vulnerabilities
Third Party Advisory;VDB Entry

CVEs referencing this url
https://security.gentoo.org/glsa/201701-49

QEMU: Multiple vulnerabilities (GLSA 201701-49) — Gentoo security
Third Party Advisory

CVEs referencing this url
http://git.qemu.org/?p=qemu.git%3Ba=commit%3Bh=4774718e5c194026ba5ee7a28d9be49be3080e42

QEMU · GitLab
http://www.openwall.com/lists/oss-security/2016/12/06/11

oss-security - CVE request Qemu: 9pfs: memory leakage via proxy/handle callbacks
Mailing List;Third Party Advisory

CVEs referencing this url
http://www.openwall.com/lists/oss-security/2016/12/08/7

oss-security - Re: CVE request Qemu: 9pfs: memory leakage via proxy/handle callbacks
Mailing List;Third Party Advisory

CVEs referencing this url

Jump to

Vulnerability Details : CVE-2016-9913

Products affected by CVE-2016-9913

Exploit prediction scoring system (EPSS) score for CVE-2016-9913

CVSS scores for CVE-2016-9913

CWE ids for CVE-2016-9913

References for CVE-2016-9913