Loop with Unreachable Exit Condition ('Infinite Loop') Affecting qemu package, versions *


Severity

Recommended
0.0
medium
0
10

Based on Ubuntu security rating.

Threat Intelligence

EPSS
0.05% (16th percentile)

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  • Snyk IDSNYK-UBUNTU1604-QEMU-1079194
  • published26 Feb 2021
  • disclosed16 Mar 2022

Introduced: 26 Feb 2021

CVE-2021-20257  (opens in a new tab)
CWE-835  (opens in a new tab)

How to fix?

There is no fixed version for Ubuntu:16.04 qemu.

NVD Description

Note: Versions mentioned in the description apply only to the upstream qemu package and not the qemu package as distributed by Ubuntu. See How to fix? for Ubuntu:16.04 relevant fixed versions and status.

An infinite loop flaw was found in the e1000 NIC emulator of the QEMU. This issue occurs while processing transmits (tx) descriptors in process_tx_desc if various descriptor fields are initialized with invalid values. This flaw allows a guest to consume CPU cycles on the host, resulting in a denial of service. The highest threat from this vulnerability is to system availability.

CVSS Scores

version 3.1