CVE-2010-2784

CVE-2010-2784 affects QEMU-KVM (as used by Red Hat Enterprise Virtualization Hypervisor and KVM) where the subpage MMIO initialization did not properly select the index to access the callback array. This flaw could allow a privileged guest user to crash the guest (denial of service) or, potential...

CVE-2010-0435

CVE-2010-0435 is a KVM/Hypervisor NULL pointer dereference vulnerability that arises when Intel VT-x is enabled, allowing a privileged guest to crash the host via instruction-emulation vectors. Public advisories (RHBA/RHSA-2010-0622 for RHEL5/RHEV 2.2 and ELSA-2010-0627/ELSA-2010-0627) document h...

CVE-2010-0429

libspice, as used in QEMU-KVM in the Hypervisor aka rhev-hypervisor in Red Hat Enterprise Virtualization RHEV 2.2 and qspice 0.3.0, does not properly restrict the addresses upon which memory-management actions are performed, which allows guest OS users to cause a denial of service guest OS crash ...

CVE-2010-0428

libspice, as used in QEMU-KVM in the Hypervisor aka rhev-hypervisor in Red Hat Enterprise Virtualization RHEV 2.2 and qspice 0.3.0, does not properly validate guest QXL driver pointers, which allows guest OS users to cause a denial of service invalid pointer dereference and guest OS crash or...

Linux kernel 2.6.x KVM Intel VT-x扩展空指针引用拒绝服务漏洞

BUGTRAQ ID: 42582 CVE ID: CVE-2010-0435 Linux Kernel是开放源码操作系统Linux所使用的内核。 主机系统上的处理器启用了Intel VT-x扩展时存在空指针引用漏洞。如果模拟器受骗模拟了mov to/from DR指令，由于没有初始化kvmx86ops-set|getdr，可能会触发这个空指针引用，导致主机崩溃。 Linux kernel 2.6.x 厂商补丁： Linux ----- 目前厂商已经发布了升级补丁以修复这个安全问题，请到厂商的主页下载： https://patchwork.kernel.org/patch/95725/...

CVE-2010-0435

The Hypervisor aka rhev-hypervisor in Red Hat Enterprise Virtualization RHEV 2.2, and KVM 83, when the Intel VT-x extension is enabled, allows guest OS users to cause a denial of service NULL pointer dereference and host OS crash via vectors related to instruction emulation...

CentOS 4 : kernel (CESA-2010:0474)

Updated kernel packages that fix three security issues and several bugs are now available for Red Hat Enterprise Linux 4. The Red Hat Security Response Team has rated this update as having important security impact. Common Vulnerability Scoring System CVSS base scores, which give detailed severit...

Fedora 12 : kernel-2.6.32.19-163.fc12 (2010-13110)

Update to kernel 2.6.32.19: http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.32.17 http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.32.18 http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.32.19 - Includes fixes from kernel 2.6.36-rc1 for problems caused by the...

kernel security update

CentOS Errata and Security Advisory CESA-2010:0474 Updated kernel packages that fix three security issues and several bugs are now available for Red Hat Enterprise Linux 4. The Red Hat Security Response Team has rated this update as having important security impact. Common Vulnerability Scoring...

libspice: Relying on guest provided data structures to indicate memory allocation

libspice, as used in QEMU-KVM in the Hypervisor aka rhev-hypervisor in Red Hat Enterprise Virtualization RHEV 2.2 and qspice 0.3.0, does not properly restrict the addresses upon which memory-management actions are performed, which allows guest OS users to cause a denial of service guest OS crash ...

qemu: insufficient constraints checking in exec.c:subpage_register()

The subpage MMIO initialization functionality in the subpageregister function in exec.c in QEMU-KVM, as used in the Hypervisor aka rhev-hypervisor in Red Hat Enterprise Virtualization RHEV 2.2 and KVM 83, does not properly select the index for access to the callback array, which allows guest OS...

Important: Red Hat Security Advisory: rhev-hypervisor security and bug fix update

Updated rhev-hypervisor packages that fix multiple security issues and two bugs are now available. The Red Hat Security Response Team has rated this update as having important security impact. Common Vulnerability Scoring System CVSS base scores, which give detailed severity ratings, are availabl...

Important: Red Hat Security Advisory: kvm security and bug fix update

Updated kvm packages that fix three security issues and multiple bugs are now available for Red Hat Enterprise Linux 5. The Red Hat Security Response Team has rated this update as having important security impact. Common Vulnerability Scoring System CVSS base scores, which give detailed severity...

Important: Red Hat Security Advisory: qspice security update

Updated qspice packages that fix two security issues are now available for Red Hat Enterprise Linux 5. The Red Hat Security Response Team has rated this update as having important security impact. Common Vulnerability Scoring System CVSS base scores, which give detailed severity ratings, are...

CVE-2010-2239

Red Hat libvirt, possibly 0.6.0 through 0.8.2, creates new images without setting the user-defined backing-store format, which allows guest OS users to read arbitrary files on the host OS via unspecified vectors...

Fedora 13 : libvirt-0.8.2-1.fc13 (2010-10960)

A reboot is required to update the iptables rules for the default virtual network to address the CVE-2010-2242 All disk format probing is now disabled in a default installation of libvirt. This change may prevent KVM guests using qcow2 disks from booting successfully. If this occurs verify that t...

Fedora 12 : libvirt-0.8.2-1.fc12 (2010-11021)

A reboot is required to update the iptables rules for the default virtual network to address the CVE-2010-2242 All disk format probing is now disabled in a default installation of libvirt. This change may prevent KVM guests using qcow2 disks from booting successfully. If this occurs verify that t...

Important: Red Hat Security Advisory: rhev-hypervisor security, bug fix, and enhancement update

An updated rhev-hypervisor package that fixes two security issues, multiple bugs, and adds enhancements is now available. The Red Hat Security Response Team has rated this update as having important security impact. Common Vulnerability Scoring System CVSS base scores, which give detailed severit...

qemu: Improper handling of erroneous data provided by Linux virtio-net driver

The virtionetbadfeatures function in hw/virtio-net.c in the virtio-net driver in the Linux kernel before 2.6.26, when used on a guest OS in conjunction with qemu-kvm 0.11.0 or KVM 83, allows remote attackers to cause a denial of service guest OS crash, and an associated qemu-kvm process exit by...

RHEL 4 : kernel (RHSA-2010:0474)

The remote Redhat Enterprise Linux 4 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2010:0474 advisory. The kernel packages contain the Linux kernel, the core of any Linux operating system. Security fixes: a NULL pointer dereference flaw was...