CVE Vulnerabilities

CVE-2016-1981

Loop with Unreachable Exit Condition ('Infinite Loop')

Published: Dec 29, 2016 | Modified: Feb 12, 2023
CVSS 3.x
5.5
MEDIUM
Source:
NVD
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CVSS 2.x
2.1 LOW
AV:L/AC:L/Au:N/C:N/I:N/A:P
RedHat/V2
2.3 LOW
AV:A/AC:M/Au:S/C:N/I:N/A:P
RedHat/V3
Ubuntu
MEDIUM

QEMU (aka Quick Emulator) built with the e1000 NIC emulation support is vulnerable to an infinite loop issue. It could occur while processing data via transmit or receive descriptors, provided the initial receive/transmit descriptor head (TDH/RDH) is set outside the allocated descriptor buffer. A privileged user inside guest could use this flaw to crash the QEMU instance resulting in DoS.

Weakness

The product contains an iteration or loop with an exit condition that cannot be reached, i.e., an infinite loop.

Affected Software

Name Vendor Start Version End Version
Qemu Qemu * 2.5.1.1 (including)
Red Hat Enterprise Linux 7 RedHat qemu-kvm-10:1.5.3-126.el7 *
Qemu Ubuntu devel *
Qemu Ubuntu trusty *
Qemu Ubuntu upstream *
Qemu Ubuntu vivid *
Qemu Ubuntu wily *
Qemu-kvm Ubuntu precise *
Qemu-kvm Ubuntu upstream *

References