Integer Overflow or Wraparound Affecting qemu package, versions <1:6.0+dfsg-2expubuntu1


Severity

Recommended
low

Based on Ubuntu security rating.

Threat Intelligence

EPSS
0.05% (16th percentile)

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  • Snyk IDSNYK-UBUNTU2204-QEMU-2781836
  • published19 Jun 2021
  • disclosed24 Feb 2022

Introduced: 19 Jun 2021

CVE-2021-3607  (opens in a new tab)
CWE-190  (opens in a new tab)

How to fix?

Upgrade Ubuntu:22.04 qemu to version 1:6.0+dfsg-2expubuntu1 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 Ubuntu. See How to fix? for Ubuntu:22.04 relevant fixed versions and status.

An integer overflow was found in the QEMU implementation of VMWare's paravirtual RDMA device in versions prior to 6.1.0. The issue occurs while handling a "PVRDMA_REG_DSRHIGH" write from the guest due to improper input validation. This flaw allows a privileged guest user to make QEMU allocate a large amount of memory, resulting in a denial of service. The highest threat from this vulnerability is to system availability.

CVSS Scores

version 3.1