CVE-2016-7907

MEDIUM

Qemu < 2.8.1.1 - Improper Input Validation

Title source: rule

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)

[Mailing List, Third Party Advisory] http://lists.opensuse.org/opensuse-updates/2016-12/msg00140.html

[Mailing List, Third Party Advisory] http://www.openwall.com/lists/oss-security/2016/10/03/1

[Mailing List, Third Party Advisory] http://www.openwall.com/lists/oss-security/2016/10/03/4

[Third Party Advisory, VDB Entry] http://www.securityfocus.com/bid/93274

[Mailing List, Patch, Vendor Advisory] https://lists.gnu.org/archive/html/qemu-devel/2016-09/msg05556.html

[Third Party Advisory] https://security.gentoo.org/glsa/201611-11

Scores

CVSS v3 4.4

EPSS 0.0011

EPSS Percentile 29.6%

Attack Vector LOCAL

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

Classification

CWE

CWE-399 CWE-20

Status published

Affected Products (8)

qemu/qemu < 2.8.1.1

qemu/qemu

qemu/qemu

qemu/qemu

qemu/qemu

qemu/qemu

qemu/qemu

n/a/n/a

Timeline

Published Oct 05, 2016

Tracked Since Feb 18, 2026