Important: Red Hat Security Advisory: spice-server security update

An updated spice-server package that fixes one security issue is now available for Red Hat Enterprise Linux 6. The Red Hat Security Response Team has rated this update as having important security impact. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity ratin...

xen: information leak through outs instruction emulation (XSA-67)

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...

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: 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...

DEBIAN-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: 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...

Design/Logic Flaw

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...

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: 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...

qemu disk backend (qdisk) resource leak

ISSUE DESCRIPTION The qdisk PV disk backend in the qemu-xen flavour of qemu "upstream qemu" can be influenced by a malicious frontend to leak mapped grant references. IMPACT A malicious HVM guest can cause the backend domain to run out of grant references, leading to a DoS for any other domain...

Information leak through outs instruction emulation

ISSUE DESCRIPTION The emulation of the outs instruction for 64-bit PV guests uses an uninitialized variable as the segment base for the source data if an FS: or GS: segment override is used, and if the segment descriptor the respective non-null selector in the corresponding selector register poin...

CVE-2013-4356

Xen 4.3.x writes hypervisor mappings to certain shadow pagetables when live migration is performed on hosts with more than 5TB of RAM, which allows local 64-bit PV guests to read or write to invalid memory and cause a denial of service crash...

DEBIAN-CVE-2013-4356

Xen 4.3.x writes hypervisor mappings to certain shadow pagetables when live migration is performed on hosts with more than 5TB of RAM, which allows local 64-bit PV guests to read or write to invalid memory and cause a denial of service crash...

CVE-2013-4356

Xen 4.3.x writes hypervisor mappings to certain shadow pagetables when live migration is performed on hosts with more than 5TB of RAM, which allows local 64-bit PV guests to read or write to invalid memory and cause a denial of service crash...

CVE-2013-4356

Xen 4.3.x writes hypervisor mappings to certain shadow pagetables when live migration is performed on hosts with more than 5TB of RAM, which allows local 64-bit PV guests to read or write to invalid memory and cause a denial of service crash...

CVE-2013-4356

Xen 4.3.x writes hypervisor mappings to certain shadow pagetables when live migration is performed on hosts with more than 5TB of RAM, which allows local 64-bit PV guests to read or write to invalid memory and cause a denial of service crash...

CVE-2013-4361

The fbld instruction emulation in Xen 3.3.x through 4.3.x does not use the correct variable for the source effective address, which allows local HVM guests to obtain hypervisor stack information by reading the values used by the instruction...

CVE-2013-4355

Xen 4.3.x and earlier does not properly handle certain errors, which allows local HVM guests to obtain hypervisor stack memory via a 1 port or 2 memory mapped I/O write or 3 other unspecified operations related to addresses without associated memory...

CVE-2013-4355

Xen 4.3.x and earlier does not properly handle certain errors, which allows local HVM guests to obtain hypervisor stack memory via a 1 port or 2 memory mapped I/O write or 3 other unspecified operations related to addresses without associated memory...

CVE-2013-4361

The fbld instruction emulation in Xen 3.3.x through 4.3.x does not use the correct variable for the source effective address, which allows local HVM guests to obtain hypervisor stack information by reading the values used by the instruction...

Design/Logic Flaw

Xen 4.3.x and earlier does not properly handle certain errors, which allows local HVM guests to obtain hypervisor stack memory via a 1 port or 2 memory mapped I/O write or 3 other unspecified operations related to addresses without associated memory...

CVE-2013-4355

Xen 4.3.x and earlier does not properly handle certain errors, which allows local HVM guests to obtain hypervisor stack memory via a 1 port or 2 memory mapped I/O write or 3 other unspecified operations related to addresses without associated memory...

CVE-2013-4361

The fbld instruction emulation in Xen 3.3.x through 4.3.x does not use the correct variable for the source effective address, which allows local HVM guests to obtain hypervisor stack information by reading the values used by the instruction...