CVE-2011-4347

MEDIUM

Description

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.

References

http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.1.10

http://www.openwall.com/lists/oss-security/2011/11/24/7

https://bugzilla.redhat.com/show_bug.cgi?id=756084

https://github.com/torvalds/linux/commit/c4e7f9022e506c6635a5037713c37118e23193e4

Details

Source: MITRE

Published: 2013-06-08

Updated: 2013-06-10

Type: CWE-264

Risk Information

CVSS v2.0

Base Score: 4

Vector: AV:L/AC:H/Au:N/C:N/I:N/A:C

Impact Score: 6.9

Exploitability Score: 1.9

Severity: MEDIUM