Every CVE Search/ Get API key

CVE-2013-4368

The outs instruction emulation in Xen 3.1.x, 4.2.x, 4.3.x, and earlier, when using FS: or GS:...

1.9 LowFix available

The outs instruction emulation in Xen 3.1.x, 4.2.x, 4.3.x, and earlier, when using FS: or GS: segment override, uses an uninitialized variable as a segment base, which allows local 64-bit PV guests to obtain sensitive information (hypervisor stack content) via unspecified vectors related to stale data in a segment register.

Exploit likelihood

0.37%Down 0.9 points since Feb 4, 2022
90%50%10%1%

What each source reports

NVD Score used 1.9

The outs instruction emulation in Xen 3.1.x, 4.2.x, 4.3.x, and earlier, when using FS: or GS: segment override, uses an uninitialized variable as a segment base, which allows local 64-bit PV guests to obtain sensitive information (hypervisor stack content) via unspecified vectors related to stale data in a segment register.

Record
CVE-2013-4368
CVSS 2.0
1.9 LowAV:L/AC:M/Au:N/C:P/I:N/A:N
Weakness
CWE-200
Updated
2026-11-02
CVE List No score

The outs instruction emulation in Xen 3.1.x, 4.2.x, 4.3.x, and earlier, when using FS: or GS: segment override, uses an uninitialized variable as a segment base, which allows local 64-bit PV guests to obtain sensitive information (hypervisor stack content) via unspecified vectors related to stale data in a segment register.

Record
CVE-2013-4368
Updated
2026-11-02
EUVDEUVD-2013-4250 No score

The outs instruction emulation in Xen 3.1.x, 4.2.x, 4.3.x, and earlier, when using FS: or GS: segment override, uses an uninitialized variable as a segment base, which allows local 64-bit PV guests to obtain sensitive information (hypervisor stack content) via unspecified vectors related to stale data in a segment register.

Record
EUVD-2013-4250
Updated
2026-11-03
GitHub AdvisoriesGHSA-x5cw-86rm-555x No score

The outs instruction emulation in Xen 3.1.x, 4.2.x, 4.3.x, and earlier, when using FS: or GS:...

The outs instruction emulation in Xen 3.1.x, 4.2.x, 4.3.x, and earlier, when using FS: or GS: segment override, uses an uninitialized variable as a segment base, which allows local 64-bit PV guests to obtain sensitive information (hypervisor stack content) via unspecified vectors related to stale data in a segment register.

Record
GHSA-x5cw-86rm-555x
Weakness
CWE-200
Updated
2026-11-02
OSV No score

The outs instruction emulation in Xen 3.1.x, 4.2.x, 4.3.x, and earlier, when using FS: or GS: segment override, uses an uninitialized variable as a segment base, which allows local 64-bit PV guests to obtain sensitive information (hypervisor stack content) via unspecified vectors related to stale data in a segment register.

Record
CVE-2013-4368
Updated
2026-11-02
OSVDEBIAN-CVE-2013-4368 No score

The outs instruction emulation in Xen 3.1.x, 4.2.x, 4.3.x, and earlier, when using FS: or GS: segment override, uses an uninitialized variable as a segment base, which allows local 64-bit PV guests to obtain sensitive information (hypervisor stack content) via unspecified vectors related to stale data in a segment register.

Record
DEBIAN-CVE-2013-4368
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
xen
Debian:12
 before 4.4.0-1
4.4.0-1
xen
Debian:13
 before 4.4.0-1
4.4.0-1
xen
Debian:14
 before 4.4.0-1
4.4.0-1
xen
Debian:7
From an advisory covering 19 CVEs
 before 4.1.4-3+deb7u2, plus listed versions
4.1.4-34.1.4-3+deb7u1
4.1.4-3+deb7u2
kernel
Red Hat:enterprise_linux:5::client
From an advisory covering 4 CVEs
 before 0:2.6.18-371.1.2.el5
0:2.6.18-371.1.2.el5
kernel-PAE
Red Hat:enterprise_linux:5::client
From an advisory covering 4 CVEs
 before 0:2.6.18-371.1.2.el5
0:2.6.18-371.1.2.el5
kernel-PAE-debuginfo
Red Hat:enterprise_linux:5::client
From an advisory covering 4 CVEs
 before 0:2.6.18-371.1.2.el5
0:2.6.18-371.1.2.el5
kernel-PAE-devel
Red Hat:enterprise_linux:5::client
From an advisory covering 4 CVEs
 before 0:2.6.18-371.1.2.el5
0:2.6.18-371.1.2.el5
kernel-debug
Red Hat:enterprise_linux:5::client
From an advisory covering 4 CVEs
 before 0:2.6.18-371.1.2.el5
0:2.6.18-371.1.2.el5
kernel-debug-debuginfo
Red Hat:enterprise_linux:5::client
From an advisory covering 4 CVEs
 before 0:2.6.18-371.1.2.el5
0:2.6.18-371.1.2.el5
Show 27 moreShow less
Affected packages
PackageAffectedFixed
kernel-debug-devel
Red Hat:enterprise_linux:5::client
From an advisory covering 4 CVEs
 before 0:2.6.18-371.1.2.el5
0:2.6.18-371.1.2.el5
kernel-debuginfo
Red Hat:enterprise_linux:5::client
From an advisory covering 4 CVEs
 before 0:2.6.18-371.1.2.el5
0:2.6.18-371.1.2.el5
kernel-debuginfo-common
Red Hat:enterprise_linux:5::client
From an advisory covering 4 CVEs
 before 0:2.6.18-371.1.2.el5
0:2.6.18-371.1.2.el5
kernel-devel
Red Hat:enterprise_linux:5::client
From an advisory covering 4 CVEs
 before 0:2.6.18-371.1.2.el5
0:2.6.18-371.1.2.el5
kernel-doc
Red Hat:enterprise_linux:5::client
From an advisory covering 4 CVEs
 before 0:2.6.18-371.1.2.el5
0:2.6.18-371.1.2.el5
kernel-headers
Red Hat:enterprise_linux:5::client
From an advisory covering 4 CVEs
 before 0:2.6.18-371.1.2.el5
0:2.6.18-371.1.2.el5
kernel-xen
Red Hat:enterprise_linux:5::client
From an advisory covering 4 CVEs
 before 0:2.6.18-371.1.2.el5
0:2.6.18-371.1.2.el5
kernel-xen-debuginfo
Red Hat:enterprise_linux:5::client
From an advisory covering 4 CVEs
 before 0:2.6.18-371.1.2.el5
0:2.6.18-371.1.2.el5
kernel-xen-devel
Red Hat:enterprise_linux:5::client
From an advisory covering 4 CVEs
 before 0:2.6.18-371.1.2.el5
0:2.6.18-371.1.2.el5
kernel
Red Hat:enterprise_linux:5::server
From an advisory covering 4 CVEs
 before 0:2.6.18-371.1.2.el5
0:2.6.18-371.1.2.el5
kernel-PAE
Red Hat:enterprise_linux:5::server
From an advisory covering 4 CVEs
 before 0:2.6.18-371.1.2.el5
0:2.6.18-371.1.2.el5
kernel-PAE-debuginfo
Red Hat:enterprise_linux:5::server
From an advisory covering 4 CVEs
 before 0:2.6.18-371.1.2.el5
0:2.6.18-371.1.2.el5
kernel-PAE-devel
Red Hat:enterprise_linux:5::server
From an advisory covering 4 CVEs
 before 0:2.6.18-371.1.2.el5
0:2.6.18-371.1.2.el5
kernel-debug
Red Hat:enterprise_linux:5::server
From an advisory covering 4 CVEs
 before 0:2.6.18-371.1.2.el5
0:2.6.18-371.1.2.el5
kernel-debug-debuginfo
Red Hat:enterprise_linux:5::server
From an advisory covering 4 CVEs
 before 0:2.6.18-371.1.2.el5
0:2.6.18-371.1.2.el5
kernel-debug-devel
Red Hat:enterprise_linux:5::server
From an advisory covering 4 CVEs
 before 0:2.6.18-371.1.2.el5
0:2.6.18-371.1.2.el5
kernel-debuginfo
Red Hat:enterprise_linux:5::server
From an advisory covering 4 CVEs
 before 0:2.6.18-371.1.2.el5
0:2.6.18-371.1.2.el5
kernel-debuginfo-common
Red Hat:enterprise_linux:5::server
From an advisory covering 4 CVEs
 before 0:2.6.18-371.1.2.el5
0:2.6.18-371.1.2.el5
kernel-devel
Red Hat:enterprise_linux:5::server
From an advisory covering 4 CVEs
 before 0:2.6.18-371.1.2.el5
0:2.6.18-371.1.2.el5
kernel-doc
Red Hat:enterprise_linux:5::server
From an advisory covering 4 CVEs
 before 0:2.6.18-371.1.2.el5
0:2.6.18-371.1.2.el5
kernel-headers
Red Hat:enterprise_linux:5::server
From an advisory covering 4 CVEs
 before 0:2.6.18-371.1.2.el5
0:2.6.18-371.1.2.el5
kernel-kdump
Red Hat:enterprise_linux:5::server
From an advisory covering 4 CVEs
 before 0:2.6.18-371.1.2.el5
0:2.6.18-371.1.2.el5
kernel-kdump-debuginfo
Red Hat:enterprise_linux:5::server
From an advisory covering 4 CVEs
 before 0:2.6.18-371.1.2.el5
0:2.6.18-371.1.2.el5
kernel-kdump-devel
Red Hat:enterprise_linux:5::server
From an advisory covering 4 CVEs
 before 0:2.6.18-371.1.2.el5
0:2.6.18-371.1.2.el5
kernel-xen
Red Hat:enterprise_linux:5::server
From an advisory covering 4 CVEs
 before 0:2.6.18-371.1.2.el5
0:2.6.18-371.1.2.el5
kernel-xen-debuginfo
Red Hat:enterprise_linux:5::server
From an advisory covering 4 CVEs
 before 0:2.6.18-371.1.2.el5
0:2.6.18-371.1.2.el5
kernel-xen-devel
Red Hat:enterprise_linux:5::server
From an advisory covering 4 CVEs
 before 0:2.6.18-371.1.2.el5
0:2.6.18-371.1.2.el5

History

History
RecordedChangedSources
affected, facts
aliasesEUVD
first indexedCVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2013-4368 is a low vulnerability (CVSS 1.9) in Xen, published October 17, 2013. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.37%, the 30th percentile. Fixed in xen 4.4.0-1.

References

Show 25 moreShow less
Pages All vulnerabilities Browse Docs Sources Guide Get API key
MoveEnter Open