kernel: kvm: device assignment DoS
Published Jun 8, 2013
4.0
MEDIUMCVSS 2.0
EPSS 0.37%
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.
Affected products
No data.
- ≤ 3.1.9
- 3.1.1
- 3.1.2
- 3.1.3
- 3.1.4
- 3.1.5
- 3.1.6
- 3.1.7
- 3.1.8
No data.
Red Hat Enterprise Linux 5
kvm-0:83-249.el5
Fixed · RHSA-2012:0149
Red Hat Enterprise Linux 6
kernel-0:2.6.32-220.7.1.el6
Fixed · RHSA-2012:0350
Red Hat Enterprise Linux 6.1 EUS - Server Only
kernel-0:2.6.32-131.29.1.el6
Fixed · RHSA-2012:1042
Red Hat Enterprise Linux 4
kernel
Not affected
Red Hat Enterprise Linux 5
kvm
Affected
Red Hat Enterprise MRG 2
realtime-kernel
Not affected
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 5 | kvm-0:83-249.el5 | Fixed | RHSA-2012:0149 |
| Red Hat Enterprise Linux 6 | kernel-0:2.6.32-220.7.1.el6 | Fixed | RHSA-2012:0350 |
| Red Hat Enterprise Linux 6.1 EUS - Server Only | kernel-0:2.6.32-131.29.1.el6 | Fixed | RHSA-2012:1042 |
| Red Hat Enterprise Linux 4 | kernel | Not affected | n/a |
| Red Hat Enterprise Linux 5 | kvm | Affected | n/a |
| Red Hat Enterprise MRG 2 | realtime-kernel | Not affected | n/a |
No package ranges for this CVE.
Remediation
Red Hat statement
This issue did not affect the versions of Linux kernel as shipped with Red Hat Enterprise Linux 4 and Red Hat Enterprise MRG as they did not provide support for the KVM subsystem. This has been addressed in Red Hat Enterprise Linux 6 via https://rhn.redhat.com/errata/RHSA-2012-0350.html. A future kvm update in Red Hat Enterprise 5 may address this flaw.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
No CVSS v3.0 score for this CVE.
AV:L/AC:H/Au:N/C:N/I:N/A:C
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (12 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 0.37% (0.00367) | 28.23th | v5 (v2026.06.15) |
| Jun 15, 2026 | 0.37% (0.00367) | 28.32th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.05% (0.00050) | 12.85th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.14% (0.00137) | 50.73th | v3 (v2023.03.01) |
| Jun 14, 2024 | 0.14% (0.00137) | 49.33th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.14% (0.00137) | 47.32th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.02% (0.01018) | 40.69th | v2 (v2022.01.01) |
| Feb 13, 2023 | 1.02% (0.01018) | 40.16th | v2 (v2022.01.01) |
| Feb 3, 2023 | 1.18% (0.01183) | 61.06th | v2 (v2022.01.01) |
| Sep 10, 2022 | 1.02% (0.01018) | 38.88th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.02% (0.01018) | 36.86th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.02% (0.01018) | 19.50th | v2 (v2022.01.01) |
References (7)
- http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.1.10 x_refsource_CONFIRM
- http://www.openwall.com/lists/oss-security/2011/11/24/7 mailing-listx_refsource_MLIST
- https://access.redhat.com/security/cve/CVE-2011-4347 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=756084 x_refsource_CONFIRMVendor AdvisoryIssue Tracking
- https://github.com/torvalds/linux/commit/c4e7f9022e506c6635a5037713c37118e23193e4 x_refsource_CONFIRM
- https://nvd.nist.gov/vuln/detail/CVE-2011-4347
- https://www.cve.org/CVERecord?id=CVE-2011-4347
| Link | Providers | Tags |
|---|---|---|
| http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.1.10 | x_refsource_CONFIRM | |
| http://www.openwall.com/lists/oss-security/2011/11/24/7 | mailing-listx_refsource_MLIST | |
| https://access.redhat.com/security/cve/CVE-2011-4347 | Vendor Advisory | |
| https://bugzilla.redhat.com/show_bug.cgi?id=756084 | x_refsource_CONFIRMVendor AdvisoryIssue Tracking | |
| https://github.com/torvalds/linux/commit/c4e7f9022e506c6635a5037713c37118e23193e4 | x_refsource_CONFIRM | |
| https://nvd.nist.gov/vuln/detail/CVE-2011-4347 | ||
| https://www.cve.org/CVERecord?id=CVE-2011-4347 |
Change history (0)
No recorded changes yet.