CVE-2016-7907

MEDIUM

QEMU < 2.8.1.1 - Denial of Service via Crafted Buffer Descriptor in imx_fec_do_tx

Title source: llm
STIX 2.1

Description

The imx_fec_do_tx function in hw/net/imx_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.

References (6)

Core 6
Core References
Mailing List, Third Party Advisory mailing-list x_refsource_mlist
http://www.openwall.com/lists/oss-security/2016/10/03/1
Third Party Advisory vendor-advisory x_refsource_gentoo
https://security.gentoo.org/glsa/201611-11
Mailing List, Third Party Advisory vendor-advisory x_refsource_suse
http://lists.opensuse.org/opensuse-updates/2016-12/msg00140.html
Mailing List, Patch, Vendor Advisory mailing-list x_refsource_mlist
https://lists.gnu.org/archive/html/qemu-devel/2016-09/msg05556.html
Third Party Advisory, VDB Entry vdb-entry x_refsource_bid
http://www.securityfocus.com/bid/93274
Mailing List, Third Party Advisory mailing-list x_refsource_mlist
http://www.openwall.com/lists/oss-security/2016/10/03/4

Scores

CVSS v3 4.4
EPSS 0.0011
EPSS Percentile 29.2%
Attack Vector LOCAL
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H

Details

CWE
CWE-20 CWE-399
Status published
Products (2)
qemu/qemu 2.9.0 rc0 (6 CPE variants)
qemu/qemu < 2.8.1.1
Published Oct 05, 2016
Tracked Since Feb 18, 2026