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


Severity

Recommended
0.0
low
0
10

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Threat Intelligence

EPSS
0.05% (19th percentile)

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  • Snyk IDSNYK-DEBIAN13-QEMU-5694143
  • published16 Jun 2021
  • disclosed15 Jun 2021

Introduced: 15 Jun 2021

CVE-2021-3593  (opens in a new tab)
CWE-824  (opens in a new tab)

How to fix?

Upgrade Debian:13 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:13 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.

CVSS Scores

version 3.1