Out-of-bounds Read Affecting qemu package, versions <1:3.1+dfsg-8+deb10u9


0.0
medium

Snyk CVSS

    Attack Complexity Low
    Privileges Required High
    Scope Changed
    Availability High

    Threat Intelligence

    EPSS 0.05% (13th percentile)
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NVD
6 medium
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SUSE
5.3 medium
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Red Hat
2.5 low

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  • Snyk ID SNYK-DEBIAN10-QEMU-1070318
  • published 5 Feb 2021
  • disclosed 13 May 2021

How to fix?

Upgrade Debian:10 qemu to version 1:3.1+dfsg-8+deb10u9 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.

An out-of-bounds heap buffer access issue was found in the ARM Generic Interrupt Controller emulator of QEMU up to and including qemu 4.2.0on aarch64 platform. The issue occurs because while writing an interrupt ID to the controller memory area, it is not masked to be 4 bits wide. It may lead to the said issue while updating controller state fields and their subsequent processing. A privileged guest user may use this flaw to crash the QEMU process on the host resulting in DoS scenario.