Access Restriction Bypass Affecting kernel-debug-devel package, versions <0:2.6.32-220.7.1.el6


Severity

Recommended
0.0
medium
0
10

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
0.14% (51st percentile)

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  • Snyk IDSNYK-RHEL6-KERNELDEBUGDEVEL-1438505
  • published26 Jul 2021
  • disclosed20 Nov 2011

Introduced: 20 Nov 2011

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

How to fix?

Upgrade RHEL:6 kernel-debug-devel to version 0:2.6.32-220.7.1.el6 or higher.
This issue was patched in RHSA-2012:0350.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-debug-devel package and not the kernel-debug-devel package as distributed by RHEL. See How to fix? for RHEL:6 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