Loop with Unreachable Exit Condition ('Infinite Loop') Affecting qemu-img package, versions <15:4.2.0-59.module+el8.5.0+13495+8166cdf8.1


Severity

Recommended
0.0
low
0
10

Based on CentOS security rating

    Threat Intelligence

    EPSS
    0.05% (15th percentile)

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  • Snyk ID SNYK-CENTOS8-QEMUIMG-1957648
  • published 26 Jul 2021
  • disclosed 10 Feb 2021

How to fix?

Upgrade Centos:8 qemu-img to version 15:4.2.0-59.module+el8.5.0+13495+8166cdf8.1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream qemu-img package and not the qemu-img package as distributed by Centos. See How to fix? for Centos:8 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
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NVD

6.5 medium
  • Attack Vector (AV)
    Local
  • Attack Complexity (AC)
    Low
  • Privileges Required (PR)
    Low
  • User Interaction (UI)
    None
  • Scope (S)
    Changed
  • Confidentiality (C)
    None
  • Integrity (I)
    None
  • Availability (A)
    High
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Red Hat

3.2 low
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SUSE

3.2 low