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Loop with Unreachable Exit Condition ('Infinite Loop') Affecting qemu package, versions <2.0.0+dfsg-1

0.0
medium

Snyk CVSS

    Attack Complexity Low
    Availability High

    Threat Intelligence

    EPSS 0.05% (14th percentile)
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NVD
5.5 medium
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Red Hat
5.5 medium

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  • Snyk ID SNYK-DEBIAN10-QEMU-427819
  • published 27 Jun 2018
  • disclosed 29 Sep 2022
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Introduced: 27 Jun 2018

CVE-2014-0148 Open this link in a new tab
CWE-835 Open this link in a new tab

How to fix?

Upgrade Debian:10 qemu to version 2.0.0+dfsg-1 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:10 relevant fixed versions and status.

Qemu before 2.0 block driver for Hyper-V VHDX Images is vulnerable to infinite loops and other potential issues when calculating BAT entries, due to missing bounds checks for block_size and logical_sector_size variables. These are used to derive other fields like 'sectors_per_block' etc. A user able to alter the Qemu disk image could ise this flaw to crash the Qemu instance resulting in DoS.