Access Restriction Bypass Affecting torvalds/linux package, versions [,3.3.4)


Severity

Recommended
0.0
medium
0
10

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

Threat Intelligence

EPSS
0.07% (24th percentile)

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  • Snyk IDSNYK-UNMANAGED-TORVALDSLINUX-3004933
  • published26 Jan 2022
  • disclosed17 May 2012
  • creditUnknown

Introduced: 17 May 2012

CVE-2012-2121  (opens in a new tab)
CWE-264  (opens in a new tab)

How to fix?

Upgrade torvalds/linux to version 3.3.4 or higher.

Overview

Affected versions of this package are vulnerable to Access Restriction Bypass. The KVM implementation in the Linux kernel before 3.3.4 does not properly manage the relationships between memory slots and the iommu, which allows guest OS users to cause a denial of service (memory leak and host OS crash) by leveraging administrative access to the guest OS to conduct hotunplug and hotplug operations on devices.

References

CVSS Base Scores

version 3.1