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CVE-2008-2382

qemu/kvm: remote DoS (infinite loop) via specially-crafted VNC message received by the domain

The protocol_client_msg function in vnc.c in the VNC server in (1) Qemu 0.9.1 and earlier and (2) KVM kvm-79 and earlier allows remote attackers to cause a denial of service (infinite loop) via a certain message.

CVSS 2.0 · 5.0 Medium EPSS 6.6% KEV · Not listed
Vendors
Kvm Qumranet Qemu
Products
Kvm Qemu
CVE-2008-4539

kvm/qemu/xen: Incomplete upstream fix for CVE-2007-1320

Heap-based buffer overflow in the Cirrus VGA implementation in (1) KVM before kvm-82 and (2) QEMU on Debian GNU/Linux and Ubuntu might allow local users to gain privileges by using the VNC console for a connection, aka the LGD-54XX "bitblt" heap overflow. NOTE: this issue exists because of an incorrect fix for CVE-2007-1320.

CVSS 2.0 · 7.2 High EPSS < 1% KEV · Not listed
Vendors
Canonical Debian Kvm Qumranet and 1 more
Products
Ubuntu Linux Debian Linux Kvm and 1 more
CVE-2010-0306

kvm: emulator privilege escalation IOPL/CPL level check

The x86 emulator in KVM 83, when a guest is configured for Symmetric Multiprocessing (SMP), does not use the Current Privilege Level (CPL) and I/O Privilege Level (IOPL) to restrict instruction execution, which allows guest OS users to cause a denial of service (guest OS crash) or gain privileges on the guest OS by leveraging access to a (1) IO port or (2) MMIO region, and replacing an instruction in between emulator entry and instruction fetch, a related issue to CVE-2010-0298.

CVSS 2.0 · 4.1 Medium EPSS < 1% KEV · Not listed
Vendors
Kvm Qumranet Redhat
Products
Kvm Enterprise Linux Rhel Virtualization
CVE-2010-0419

kvm: emulator privilege escalation segment selector check

The x86 emulator in KVM 83, when a guest is configured for Symmetric Multiprocessing (SMP), does not properly restrict writing of segment selectors to segment registers, which might allow guest OS users to cause a denial of service (guest OS crash) or gain privileges on the guest OS by leveraging access to a (1) IO port or (2) MMIO region, and replacing an instruction in between emulator entry and instruction fetch.

CVSS 2.0 · 4.4 Medium EPSS < 1% KEV · Not listed
Vendors
Kvm Qumranet Redhat
Products
Kvm Enterprise Linux Rhel Virtualization
CVE-2010-0741

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

The virtio_net_bad_features 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 sending a large amount of network traffic to a TCP port on the guest OS, related to a virtio-net whitelist that includes an improper implementation of TCP Segment Offloading (TSO).

CVSS 2.0 · 7.8 High EPSS 3.5% KEV · Not listed
Vendors
Kvm Qumranet Linux Qemu and 1 more
Products
Kvm Linux Kernel Qemu and 2 more