CVE-2013-6400 json
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 wh…
published 12y ago modified 4mo ago also EUVD-2013-6221
- cvss
- 6.8
- version 2.0, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.7%
- EPSS 0.7% chance of exploitation in 30 days, percentile 51%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
- xen Debian 14, Debian 13, Debian 12 4.4.0-1
debian advisories DEBIAN-CVE-2013-6400
Is CVE-2013-6400 in your stack? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.
Check with FencerVendor advisories
What the vendors themselves say about their products: affected, fixed or not affected, and what to do.
red hat product security vex CVE-2013-6400 updated cvss 6.5
xen: IOMMU TLB flushing may be inadvertently suppressed
-
Red Hat Enterprise Linux 5 kernel-xennot affected: vulnerable code not present
Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf
Exploit prediction
0.66% chance of exploitation in the next 30 days, higher than 51% of all scored CVEs (FIRST EPSS, 2026-11-09).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 2.0 | 6.8 | AV:A/AC:H/Au:N/C:C/I:C/A:C |
Classification
- Weakness
-
- CWE-264 Permissions, Privileges, and Access Controls
References
-
lists.opensuse.org
/opensuse-security-announce/2014-03/msg00011.html
vendor-advisory
-
lists.fedoraproject.org
/pipermail/package-announce/2013-December/125081.html
vendor-advisory
-
security.gentoo.org
/glsa/glsa-201407-03.xml
vendor-advisory
-
lists.fedoraproject.org
/pipermail/package-announce/2013-December/125111.html
vendor-advisory
-
secunia.com
/advisories/55932
third-party-advisory, vendor-advisory
-
securitytracker.com
/id/1029468
vdb-entry
-
lists.xen.org
/archives/html/xen-announce/2013-12/msg00002.html
mailing-list
-
openwall.com
/lists/oss-security/2013/12/10/7
mailing-list
Sources
- CVE List CVE-2013-6400
- NVD CVE-2013-6400
Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.