NULL Pointer Dereference Affecting torvalds/linux package, versions [,5.17)


Severity

Recommended
0.0
medium
0
10

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

Threat Intelligence

Exploit Maturity
Proof of Concept
EPSS
0.02% (4th percentile)

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  • Snyk IDSNYK-UNMANAGED-TORVALDSLINUX-2936509
  • published30 Jun 2022
  • disclosed28 Jun 2022
  • creditbutt3rflyh4ck

Introduced: 28 Jun 2022

CVE-2021-4095  (opens in a new tab)
CWE-476  (opens in a new tab)

How to fix?

Upgrade torvalds/linux to version 5.17 or higher.

Overview

Affected versions of this package are vulnerable to NULL Pointer Dereference in kvm_dirty_ring_get() via a KVM KVM_XEN_HVM_SET_ATTR ioctl when there is no vCPU created.

CVSS Base Scores

version 3.1