Out-of-bounds Write Affecting qemu-project/qemu package, versions [,5.2.0)


Severity

Recommended
0.0
medium
0
10

CVSS assessment made by Snyk's Security Team. Learn more

Threat Intelligence

EPSS
0.04% (6th percentile)

Do your applications use this vulnerable package?

In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.

Test your applications
  • Snyk IDSNYK-UNMANAGED-QEMUPROJECTQEMU-3006923
  • published26 Jan 2022
  • disclosed8 Dec 2020
  • creditUnknown

Introduced: 8 Dec 2020

CVE-2020-27821  (opens in a new tab)
CWE-122  (opens in a new tab)
CWE-787  (opens in a new tab)

How to fix?

Upgrade qemu-project/qemu to version 5.2.0 or higher.

Overview

Affected versions of this package are vulnerable to Out-of-bounds Write. A flaw was found in the memory management API of QEMU during the initialization of a memory region cache. This issue could lead to an out-of-bounds write access to the MSI-X table while performing MMIO operations. A guest user may abuse this flaw to crash the QEMU process on the host, resulting in a denial of service. This flaw affects QEMU versions prior to 5.2.0.

CVSS Scores

version 3.1