CVE-2013-6400
MEDIUM · CVSS 6.8EPSS 0.7%EU EUVD
Xen 4.2.x and 4.3.x, when using Intel VT-d and a PCI device has been assigned, does not clear the flag that suppresses IOMMU TLB flushes when unspecified errors occur, which causes the TLB entries to not be flushed and allows local guest administrators to cause a denial of service (host crash) or gain privileges via unspecified vectors.
Key facts
- CVSS score
- 6.8 (v2.0)
- Severity
- MEDIUM
- CVSS vector
AV:A/AC:H/Au:N/C:C/I:C/A:C- Weakness (CWE)
- CWE-264
- EPSS score
- 0.7% (52th percentile)
- In CISA KEV
- No
- In EU EUVD
- Yes (EUVD-2013-6221)
- Published
- December 13, 2013
- NVD last modified
- June 17, 2026
- Status
- Modified
EU Vulnerability Database (EUVD)
This vulnerability is also tracked by ENISA as EUVD-2013-6221 in the EU Vulnerability Database. Last updated in EUVD on August 6, 2024.
View on the EU Vulnerability DatabaseAffected products
- xen / xen
- xen / xen
- xen / xen
- xen / xen
- xen / xen
- xen / xen
References
- http://lists.fedoraproject.org/pipermail/package-announce/2013-December/125081.html
- http://lists.fedoraproject.org/pipermail/package-announce/2013-December/125111.html
- http://lists.opensuse.org/opensuse-security-announce/2014-03/msg00011.html
- http://lists.xen.org/archives/html/xen-announce/2013-12/msg00002.html
- http://secunia.com/advisories/55932(Vendor Advisory)
- http://security.gentoo.org/glsa/glsa-201407-03.xml
- http://www.openwall.com/lists/oss-security/2013/12/10/7
- http://www.securitytracker.com/id/1029468
Last updated September 17, 2026 · Source: NVD, CISA KEV, FIRST.org EPSS
Query CVEs from your AI assistant
The CVE/NVD Explorer brain answers CVE questions directly inside Claude, ChatGPT, or any MCP assistant — always up to date, no setup. Add it once and stop pasting advisories into chat.
Add the CVE brain