Access of Uninitialized Pointer Affecting qemu package, versions <1:4.1-2


0.0
low

Snyk CVSS

    Attack Complexity Low
    Scope Changed

    Threat Intelligence

    EPSS 0.05% (14th percentile)
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NVD
3.8 low
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SUSE
3.8 low
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Red Hat
3.8 low

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  • Snyk ID SNYK-DEBIAN12-QEMU-1558570
  • published 16 Jun 2021
  • disclosed 15 Jun 2021

How to fix?

Upgrade Debian:12 qemu to version 1:4.1-2 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:12 relevant fixed versions and status.

An invalid pointer initialization issue was found in the SLiRP networking implementation of QEMU. The flaw exists in the udp6_input() function and could occur while processing a udp packet that is smaller than the size of the 'udphdr' structure. This issue may lead to out-of-bounds read access or indirect host memory disclosure to the guest. The highest threat from this vulnerability is to data confidentiality. This flaw affects libslirp versions prior to 4.6.0.