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CVE-2016-7908 Details

Description

The mcf_fec_do_tx function in hw/net/mcf_fec.c in QEMU (aka Quick Emulator) does not properly limit the buffer descriptor count when transmitting packets, which allows local guest OS administrators to cause a denial of service (infinite loop and QEMU process crash) via vectors involving a buffer descriptor with a length of 0 and crafted values in bd.flags.

Metrics

CVSS 3.x Severity and Vector Strings:

NIST: [email protected]CVSS-B:4.4 MEDIUMVector:CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
http://git.qemu.org/?p=qemu.git%3Ba=commit%3Bh=070c4b92b8cd5390889716677a0b92444d6e087a	CVE
http://lists.opensuse.org/opensuse-updates/2016-12/msg00140.html	CVE	Mailing ListThird Party Advisory
https://lists.debian.org/debian-lts-announce/2018/11/msg00038.html	CVE	Third Party Advisory
https://lists.gnu.org/archive/html/qemu-devel/2016-09/msg05557.html	CVE	Mailing ListPatchVendor Advisory
https://security.gentoo.org/glsa/201611-11	CVE	Third Party Advisory
http://www.openwall.com/lists/oss-security/2016/10/03/2	CVE	Mailing ListThird Party Advisory
http://www.openwall.com/lists/oss-security/2016/10/03/5	CVE	Mailing ListThird Party Advisory
http://www.securityfocus.com/bid/93273	CVE	Third Party AdvisoryVDB Entry
http://git.qemu.org/?p=qemu.git%3Ba=commit%3Bh=070c4b92b8cd5390889716677a0b92444d6e087a	[email protected]
http://lists.opensuse.org/opensuse-updates/2016-12/msg00140.html	[email protected]	Mailing ListThird Party Advisory
https://lists.debian.org/debian-lts-announce/2018/11/msg00038.html	[email protected]	Third Party Advisory
https://lists.gnu.org/archive/html/qemu-devel/2016-09/msg05557.html	[email protected]	Mailing ListPatchVendor Advisory
https://security.gentoo.org/glsa/201611-11	[email protected]	Third Party Advisory
http://www.openwall.com/lists/oss-security/2016/10/03/2	[email protected]	Mailing ListThird Party Advisory
http://www.openwall.com/lists/oss-security/2016/10/03/5	[email protected]	Mailing ListThird Party Advisory
http://www.securityfocus.com/bid/93273	[email protected]	Third Party AdvisoryVDB Entry

see all 16 references

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-835	Loop with Unreachable Exit Condition ('Infinite Loop')	[email protected]

Affected Products

Product	Versions
qemu qemu	<= 2.7.1
CPE cpe:2.3:a:qemu:qemu:::::::: Remediation No remediation found in references.
debian debian linux	8.0
CPE cpe:2.3:o:debian:debian_linux:8.0:::::::* Remediation No remediation found in references.

Change History

13 change records found show changes

Date	Action	Recorded By
Jun 17, 2026	CVE Modified	[email protected]
May 6, 2026	Status Change	[email protected]
Nov 21, 2024	CVE Modified	CVE
May 14, 2024	CVE Modified	[email protected]
Feb 12, 2023	CVE Modified	[email protected]
Nov 10, 2020	Modified Analysis	[email protected]
Dec 1, 2018	CVE Modified	[email protected]
Jul 1, 2017	CVE Modified	[email protected]
Jan 7, 2017	CVE Modified	[email protected]
Nov 28, 2016	CVE Modified	[email protected]
Oct 12, 2016	CVE Translated	[email protected]
Oct 5, 2016	Modified Analysis	[email protected]
Oct 5, 2016	Initial Analysis	[email protected]