VMware Security Advisory 2011-0003 - Update 1 for vCenter Server 4.1, vCenter Update Manager 4.1, vSphere Hypervisor (ESXi) 4.1, ESXi 4.1, addresses several security issues.
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Ubuntu Security Notice 947-2 - USN-947-1 fixed vulnerabilities in the Linux kernel. Fixes for CVE-2010-0419 caused failures when using KVM in certain situations. This update reverts that fix until a better solution can be found.
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Ubuntu Security Notice 947-1 - It was discovered that the Linux kernel did not correctly handle memory protection of the Virtual Dynamic Shared Object page when running a 32-bit application on a 64-bit kernel. It was discovered that the r8169 network driver did not correctly check the size of Ethernet frames. Wei Yongjun discovered that SCTP did not correctly validate certain chunks. It was discovered that KVM did not correctly limit certain privileged IO accesses on x86. Evgeniy Polyakov discovered that IPv6 did not correctly handle certain TUN packets. Tons of other vulnerabilities have also been discovered and addressed.
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