xen: libxl partially sets up HVM passthrough even with disabled iommu
Published Sep 12, 2013
6.5
MEDIUMCVSS 2.0
EPSS 0.53%
Description
The xenlight library (libxl) in Xen 4.0.x through 4.2.x, when IOMMU is disabled, provides access to a busmastering-capable PCI passthrough device before the IOMMU setup is complete, which allows local HVM guest domains to gain privileges or cause a denial of service via a DMA instruction.
Affected products
No data.
No data.
Red Hat Enterprise Linux 5
xen
Not affected
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 5 | xen | Not affected | n/a |
No package ranges for this CVE.
Remediation
Red Hat statement
Not vulnerable. This issue does not affect the versions of the xen package as shipped with Red Hat Enterprise Linux 5 as it does not provide support for the libxl toolstack. This issue does not affect Red Hat Enterprise Linux 6 and Red Hat Enterprise MRG 2.
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:S/C:C/I:C/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 (10 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 0.53% (0.00531) | 42.75th | v5 (v2026.06.15) |
| Jun 15, 2026 | 0.53% (0.00531) | 40.39th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.13% (0.00128) | 29.66th | 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 | 0.95% (0.00950) | 32.28th | v2 (v2022.01.01) |
| Sep 10, 2022 | 0.95% (0.00950) | 30.63th | v2 (v2022.01.01) |
| Apr 1, 2022 | 0.95% (0.00950) | 28.61th | v2 (v2022.01.01) |
| Feb 4, 2022 | 0.95% (0.00950) | 13.46th | v2 (v2022.01.01) |
References (9)
- http://lists.opensuse.org/opensuse-security-announce/2014-03/msg00021.html vendor-advisoryx_refsource_SUSE
- http://lists.xen.org/archives/html/xen-devel/2013-07/msg00066.html mailing-listx_refsource_MLISTPatch
- http://security.gentoo.org/glsa/glsa-201407-03.xml vendor-advisoryx_refsource_GENTOO
- http://www.debian.org/security/2014/dsa-3006 vendor-advisoryx_refsource_DEBIAN
- http://www.openwall.com/lists/oss-security/2013/09/10/4 mailing-listx_refsource_MLIST
- https://access.redhat.com/security/cve/CVE-2013-4329 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1006298 Issue Tracking
- https://nvd.nist.gov/vuln/detail/CVE-2013-4329
- https://www.cve.org/CVERecord?id=CVE-2013-4329
| Link | Providers | Tags |
|---|---|---|
| http://lists.opensuse.org/opensuse-security-announce/2014-03/msg00021.html | vendor-advisoryx_refsource_SUSE | |
| http://lists.xen.org/archives/html/xen-devel/2013-07/msg00066.html | mailing-listx_refsource_MLISTPatch | |
| http://security.gentoo.org/glsa/glsa-201407-03.xml | vendor-advisoryx_refsource_GENTOO | |
| http://www.debian.org/security/2014/dsa-3006 | vendor-advisoryx_refsource_DEBIAN | |
| http://www.openwall.com/lists/oss-security/2013/09/10/4 | mailing-listx_refsource_MLIST | |
| https://access.redhat.com/security/cve/CVE-2013-4329 | Vendor Advisory | |
| https://bugzilla.redhat.com/show_bug.cgi?id=1006298 | Issue Tracking | |
| https://nvd.nist.gov/vuln/detail/CVE-2013-4329 | ||
| https://www.cve.org/CVERecord?id=CVE-2013-4329 |
Change history (0)
No recorded changes yet.