Out-of-bounds Read Affecting qemu package, versions <2.0.0+dfsg-2ubuntu1.47+esm3


Severity

Recommended
low

Based on Ubuntu security rating.

Threat Intelligence

EPSS
0.05% (16th percentile)

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  • Snyk IDSNYK-UBUNTU1404-QEMU-3150198
  • published29 Nov 2022
  • disclosed29 Nov 2022

Introduced: 29 Nov 2022

CVE-2022-4144  (opens in a new tab)
CWE-125  (opens in a new tab)

How to fix?

Upgrade Ubuntu:14.04 qemu to version 2.0.0+dfsg-2ubuntu1.47+esm3 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:14.04 relevant fixed versions and status.

An out-of-bounds read flaw was found in the QXL display device emulation in QEMU. The qxl_phys2virt() function does not check the size of the structure pointed to by the guest physical address, potentially reading past the end of the bar space into adjacent pages. A malicious guest user could use this flaw to crash the QEMU process on the host causing a denial of service condition.

CVSS Scores

version 3.1