kvm: device assignment page leak
Published May 17, 2012
4.9
MEDIUMCVSS 2.0
EPSS 0.41%
Description
The KVM implementation in the Linux kernel before 3.3.4 does not properly manage the relationships between memory slots and the iommu, which allows guest OS users to cause a denial of service (memory leak and host OS crash) by leveraging administrative access to the guest OS to conduct hotunplug and hotplug operations on devices.
Affected products
No data.
- ≤ 3.3.3
No data.
Red Hat Enterprise Linux 5
kvm-0:83-249.el5_8.4
Fixed · RHSA-2012:0676
Red Hat Enterprise Linux 6
kernel-0:2.6.32-220.23.1.el6
Fixed · RHSA-2012:0743
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_8.4 | Fixed | RHSA-2012:0676 |
| Red Hat Enterprise Linux 6 | kernel-0:2.6.32-220.23.1.el6 | Fixed | RHSA-2012:0743 |
| 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
No remediation recorded yet.
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:L/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 (11 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 0.41% (0.00413) | 33.21th | v5 (v2026.06.15) |
| Jun 15, 2026 | 0.42% (0.00417) | 33.05th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.06% (0.00056) | 14.60th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.06% (0.00062) | 28.60th | v3 (v2023.03.01) |
| Jun 13, 2024 | 0.06% (0.00062) | 26.61th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.06% (0.00062) | 24.59th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.28% (0.01282) | 68.34th | v2 (v2022.01.01) |
| Feb 13, 2023 | 1.28% (0.01282) | 67.79th | v2 (v2022.01.01) |
| Feb 3, 2023 | 1.55% (0.01547) | 74.40th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.28% (0.01282) | 65.91th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.28% (0.01282) | 41.72th | v2 (v2022.01.01) |
References (14)
- http://rhn.redhat.com/errata/RHSA-2012-0676.html vendor-advisoryx_refsource_REDHAT
- http://rhn.redhat.com/errata/RHSA-2012-0743.html vendor-advisoryx_refsource_REDHAT
- http://secunia.com/advisories/50732 third-party-advisoryx_refsource_SECUNIA
- http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.3.4 x_refsource_CONFIRM
- http://www.openwall.com/lists/oss-security/2012/04/19/16 mailing-listx_refsource_MLIST
- http://www.securitytracker.com/id?1027083 vdb-entryx_refsource_SECTRACK
- http://www.ubuntu.com/usn/USN-1577-1 vendor-advisoryx_refsource_UBUNTU
- http://www.ubuntu.com/usn/USN-2036-1 vendor-advisoryx_refsource_UBUNTU
- http://www.ubuntu.com/usn/USN-2037-1 vendor-advisoryx_refsource_UBUNTU
- https://access.redhat.com/security/cve/CVE-2012-2121 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=814149 x_refsource_CONFIRMIssue Tracking
- https://github.com/torvalds/linux/commit/09ca8e1173bcb12e2a449698c9ae3b86a8a10195 x_refsource_CONFIRM
- https://nvd.nist.gov/vuln/detail/CVE-2012-2121
- https://www.cve.org/CVERecord?id=CVE-2012-2121
Change history (0)
No recorded changes yet.