Access Restriction Bypass Affecting kernel package, versions <0:2.6.35.14-107.1.39.amzn1


Severity

Recommended
0.0
medium
0
10

Based on Amazon Linux security rating.

Threat Intelligence

EPSS
0.14% (51st percentile)

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  • Snyk IDSNYK-AMZN201803-KERNEL-1663948
  • published27 Sept 2021
  • disclosed8 Jun 2013

Introduced: 8 Jun 2013

CVE-2011-4347  (opens in a new tab)
CWE-264  (opens in a new tab)

How to fix?

Upgrade Amazon-Linux:2018.03 kernel to version 0:2.6.35.14-107.1.39.amzn1 or higher.
This issue was patched in ALAS-2012-55.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel package and not the kernel package as distributed by Amazon-Linux. See How to fix? for Amazon-Linux:2018.03 relevant fixed versions and status.

The kvm_vm_ioctl_assign_device function in virt/kvm/assigned-dev.c in the KVM subsystem in the Linux kernel before 3.1.10 does not verify permission to access PCI configuration space and BAR resources, which allows host OS users to assign PCI devices and cause a denial of service (host OS crash) via a KVM_ASSIGN_PCI_DEVICE operation.

CVSS Scores

version 3.1