Loop with Unreachable Exit Condition ('Infinite Loop') Affecting qemu-kvm-common package, versions <15:4.2.0-48.module+el8.4.0+11909+3300d70f.3


Severity

Recommended
medium

Based on CentOS security rating.

Threat Intelligence

EPSS
0.05% (21st percentile)

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  • Snyk IDSNYK-CENTOS8-QEMUKVMCOMMON-2116290
  • published26 Jul 2021
  • disclosed24 Feb 2021

Introduced: 24 Feb 2021

CVE-2021-3416  (opens in a new tab)
CWE-835  (opens in a new tab)

How to fix?

Upgrade Centos:8 qemu-kvm-common to version 15:4.2.0-48.module+el8.4.0+11909+3300d70f.3 or higher.

NVD Description

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

A potential stack overflow via infinite loop issue was found in various NIC emulators of QEMU in versions up to and including 5.2.0. The issue occurs in loopback mode of a NIC wherein reentrant DMA checks get bypassed. A guest user/process may use this flaw to consume CPU cycles or crash the QEMU process on the host resulting in DoS scenario.

CVSS Scores

version 3.1