NULL Pointer Dereference Affecting qemu-project/qemu package, versions [,6.2.0)


Severity

Recommended
0.0
high
0
10

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

Threat Intelligence

EPSS
0.04% (6th percentile)

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  • Snyk IDSNYK-UNMANAGED-QEMUPROJECTQEMU-2932994
  • published21 Jun 2022
  • disclosed21 Jun 2022
  • creditUnknown

Introduced: 21 Jun 2022

CVE-2021-4145  (opens in a new tab)
CWE-476  (opens in a new tab)

How to fix?

Upgrade qemu-project/qemu to version 6.2.0 or higher.

Overview

Affected versions of this package are vulnerable to NULL Pointer Dereference where the self pointer is dereferenced in mirror_wait_on_conflicts() without ensuring that it's not NULL. A malicious unprivileged user within the guest could use this flaw to crash the QEMU process on the host when writing data reaches the threshold of mirroring node.

CVSS Scores

version 3.1