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Fencer Intel
medium 4.0

CVE-2011-4347 json

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 p…

published 2013-06-08 13 y ago modified 2026-06-16 4 mo ago also EUVD-2011-4278

cvss
4.0
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
0.4%
EPSS 0.4% chance of exploitation in 30 days, percentile 30%
public exploits
0
none known

Summary

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.

Patch / fix

  • kernel RHEL 6 2.6.32-220.7.1.el6
  • perf RHEL 6 2.6.32-220.7.1.el6
  • python-perf RHEL 6 2.6.32-220.7.1.el6
  • kernel-kdump RHEL 6 2.6.32-220.7.1.el6
  • kernel-firmware RHEL 6 2.6.32-220.7.1.el6
  • kernel-bootwrapper RHEL 6 2.6.32-220.7.1.el6
  • kernel-debuginfo-common-i686 RHEL 6 2.6.32-220.7.1.el6
  • kernel-debuginfo-common-ppc64 RHEL 6 2.6.32-220.7.1.el6

red hat advisories RHSA-2012:0350RHSA-2012:1042RHSA-2012:0149

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2011-4347 updated cvss 4.0

kernel: kvm: device assignment DoS

  • Red Hat Enterprise Linux 5 kvm
    affected: no fix available
  • Red Hat Enterprise Linux Desktop (v. 6) perf 2.6.32-220.7.1.el6, kernel 2.6.32-220.7.1.el6, kernel-firmware 2.6.32-220.7.1.el6, kernel-debuginfo-common-i686 2.6.32-220.7.1.el6, kernel-debuginfo-common-x86_64 2.6.32-220.7.1.el6
    fixed: vendor fix RHSA-2012:0350
  • Red Hat Enterprise Linux Desktop Multi OS (v. 5 client) kvm 83-249.el5, kmod-kvm 83-249.el5, kvm-tools 83-249.el5, kvm-qemu-img 83-249.el5
    fixed: vendor fix RHSA-2012:0149
  • Red Hat Enterprise Linux Desktop Optional (v. 6) kernel 2.6.32-220.7.1.el6, python-perf 2.6.32-220.7.1.el6, kernel-debuginfo-common-i686 2.6.32-220.7.1.el6, kernel-debuginfo-common-x86_64 2.6.32-220.7.1.el6 Red Hat Enterprise Linux HPC Node (v. 6) perf 2.6.32-220.7.1.el6, kernel 2.6.32-220.7.1.el6, kernel-firmware 2.6.32-220.7.1.el6, kernel-debuginfo-common-x86_64 2.6.32-220.7.1.el6 Red Hat Enterprise Linux HPC Node Optional (v. 6) kernel 2.6.32-220.7.1.el6, python-perf 2.6.32-220.7.1.el6, kernel-debuginfo-common-x86_64 2.6.32-220.7.1.el6 Red Hat Enterprise Linux Server (v. 6) perf 2.6.32-220.7.1.el6, kernel 2.6.32-220.7.1.el6, kernel-kdump 2.6.32-220.7.1.el6, kernel-firmware 2.6.32-220.7.1.el6, kernel-bootwrapper 2.6.32-220.7.1.el6, kernel-debuginfo-common-i686 2.6.32-220.7.1.el6, +3 more
    fixed: vendor fix RHSA-2012:0350
  • Red Hat Enterprise Linux Server EUS (v. 6.1) perf 2.6.32-131.29.1.el6, kernel 2.6.32-131.29.1.el6, kernel-kdump 2.6.32-131.29.1.el6, kernel-firmware 2.6.32-131.29.1.el6, kernel-bootwrapper 2.6.32-131.29.1.el6, kernel-debuginfo-common-i686 2.6.32-131.29.1.el6, +3 more
    fixed: vendor fix RHSA-2012:1042
  • Red Hat Enterprise Linux Server Optional (v. 6) kernel 2.6.32-220.7.1.el6, python-perf 2.6.32-220.7.1.el6, kernel-debuginfo-common-i686 2.6.32-220.7.1.el6, kernel-debuginfo-common-ppc64 2.6.32-220.7.1.el6, kernel-debuginfo-common-s390x 2.6.32-220.7.1.el6, kernel-debuginfo-common-x86_64 2.6.32-220.7.1.el6
    fixed: vendor fix RHSA-2012:0350
  • Red Hat Enterprise Linux Virtualization (v. 5 server) kvm 83-249.el5, kmod-kvm 83-249.el5, kvm-tools 83-249.el5, kvm-qemu-img 83-249.el5
    fixed: vendor fix RHSA-2012:0149
  • Red Hat Enterprise Linux Workstation (v. 6) perf 2.6.32-220.7.1.el6, kernel 2.6.32-220.7.1.el6, kernel-firmware 2.6.32-220.7.1.el6, kernel-debuginfo-common-i686 2.6.32-220.7.1.el6, kernel-debuginfo-common-x86_64 2.6.32-220.7.1.el6 Red Hat Enterprise Linux Workstation Optional (v. 6) kernel 2.6.32-220.7.1.el6, python-perf 2.6.32-220.7.1.el6, kernel-debuginfo-common-i686 2.6.32-220.7.1.el6, kernel-debuginfo-common-x86_64 2.6.32-220.7.1.el6
    fixed: vendor fix RHSA-2012:0350
show 1 more
  • Red Hat Enterprise Linux 4 kernel Red Hat Enterprise MRG 2 kernel-rt, mrg-rt-release, kernel-rt-trace, kernel-rt-vanilla, kernel-rt-firmware
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

0.37% chance of exploitation in the next 30 days, higher than 30% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
NVD 2.0 4.0 AV:L/AC:H/Au:N/C:N/I:N/A:C

Classification

Weakness
  • CWE-264 Permissions, Privileges, and Access Controls
Technology feeds

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.