Loop with Unreachable Exit Condition ('Infinite Loop') Affecting qemu package, versions <1:2.1+dfsg-12+deb8u5a


Severity

Recommended
0.0
medium
0
10

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Threat Intelligence

EPSS
0.06% (29th percentile)

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  • Snyk IDSNYK-DEBIAN8-QEMU-427244
  • published29 Dec 2016
  • disclosed29 Dec 2016

Introduced: 29 Dec 2016

CVE-2016-1981  (opens in a new tab)
CWE-835  (opens in a new tab)

How to fix?

Upgrade Debian:8 qemu to version 1:2.1+dfsg-12+deb8u5a or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream qemu package and not the qemu package as distributed by Debian. See How to fix? for Debian:8 relevant fixed versions and status.

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.

CVSS Scores

version 3.1