kernel: xen: vmx: insecure cpuid vmexit
Published Jan 7, 2014
4.6
MEDIUMCVSS 2.0
EPSS 0.47%
Description
Xen, when using x86 Intel processors and the VMX virtualization extension is enabled, does not properly handle cpuid instruction emulation when exiting the VM, which allows local guest users to cause a denial of service (guest crash) via unspecified vectors.
Affected products
Remediation
Red Hat statement
The versions of the Linux kernel as shipped with Red Hat Enterprise Linux 4, 6, and Red Hat Enterprise MRG are not affected. This has been addressed in Red Hat Enterprise Linux 5 via https://rhn.redhat.com/errata/RHSA-2011-0927.html. Also, only systems running on x86 architecture with Intel processor and VMX virtualization extension enabled are affected.
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:A/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 | 0.47% (0.00470) | 38.37th | v5 (v2026.06.15) |
| Jun 15, 2026 | 0.47% (0.00474) | 37.09th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.08% (0.00084) | 22.10th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.07% (0.00067) | 31.67th | v3 (v2023.03.01) |
| Jun 21, 2024 | 0.08% (0.00085) | 36.50th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.08% (0.00085) | 34.48th | v3 (v2023.03.01) |
| Mar 6, 2023 | 0.89% (0.00885) | 27.89th | v2 (v2022.01.01) |
| Feb 13, 2023 | 0.89% (0.00885) | 27.56th | v2 (v2022.01.01) |
| Feb 3, 2023 | 1.02% (0.01018) | 39.95th | v2 (v2022.01.01) |
| Sep 10, 2022 | 0.89% (0.00885) | 26.24th | v2 (v2022.01.01) |
| Apr 1, 2022 | 0.89% (0.00885) | 24.24th | v2 (v2022.01.01) |
| Feb 4, 2022 | 0.89% (0.00885) | 10.50th | v2 (v2022.01.01) |
No CWE recorded.
References (6)
- http://rhn.redhat.com/errata/RHSA-2011-0927.html vendor-advisoryx_refsource_REDHAT
- http://www.openwall.com/lists/oss-security/2011/07/07/3 mailing-listx_refsource_MLIST
- https://access.redhat.com/security/cve/CVE-2011-1936 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=706323 Issue Tracking
- https://nvd.nist.gov/vuln/detail/CVE-2011-1936
- https://www.cve.org/CVERecord?id=CVE-2011-1936
| Link | Providers | Tags |
|---|---|---|
| http://rhn.redhat.com/errata/RHSA-2011-0927.html | vendor-advisoryx_refsource_REDHAT | |
| http://www.openwall.com/lists/oss-security/2011/07/07/3 | mailing-listx_refsource_MLIST | |
| https://access.redhat.com/security/cve/CVE-2011-1936 | Vendor Advisory | |
| https://bugzilla.redhat.com/show_bug.cgi?id=706323 | Issue Tracking | |
| https://nvd.nist.gov/vuln/detail/CVE-2011-1936 | ||
| https://www.cve.org/CVERecord?id=CVE-2011-1936 |
Change history (0)
No recorded changes yet.