Denial Of Service (DoS)

kvm is vulnerable to denial of service. A flaw was found in the way QEMU-KVM handled erroneous data provided by the Linux virtio-net driver, used by guest operating systems. Due to a deficiency in the TSO TCP segment offloading implementation, a guest's virtio-net driver would transmit improper...

Arbitrary Code Execution

kvm is vulnerable to arbirary code execution. Gust OS users are able to read and write arbitrary QEMU memory by modifying the address used by Cairo for memory mappings...

qemu-kvm security update

1.5.3-173.el78.1 - kvm-util-add-slirpfmt-helpers.patch bz1798970 - kvm-tcpemu-fix-unsafe-snprintf-usages.patch bz1798970 - Resolves: bz1798970 CVE-2020-8608 qemu-kvm: QEMU: Slirp: potential OOB access due to unsafe snprintf usages rhel-7.8.z...

Oracle Linux 6 : qemu-kvm (ELSA-2020-1403)

The remote Oracle Linux 6 host has packages installed that are affected by a vulnerability as referenced in the ELSA-2020-1403 advisory. 0.12.1.2-2.506.el610.7 - kvm-slirp-disable-tcpemu.patch bz1791680 - kvm-slirp-add-slirpfmt-helpers.patch bz1798966 - kvm-tcpemu-fix-unsafe-snprintf-usages.patch...

Scientific Linux Security Update : qemu-kvm on SL6.x i386/x86_64 (20200408)

Security Fixes : - QEMU: Slirp: potential OOB access due to unsafe snprintf usages Bug Fixes : - QEMU: Slirp: disable emulation of tcp programs like ftp IRC etc. rhel-6 C Tenable Network Security, Inc. The descriptive text is C Scientific Linux. include"compat.inc"; if description scriptid135382;...

CVE-2020-8834

KVM in the Linux kernel on Power8 processors has a conflicting use of HSTATEHOSTR1 to store r1 state in kvmppchventry plus in kvmppcsave,restoretm, leading to a stack corruption. Because of this, an attacker with the ability run code in kernel space of a guest VM can cause the host kernel to pani...

CVE-2020-8834

KVM in the Linux kernel on Power8 processors has a conflicting use of HSTATEHOSTR1 to store r1 state in kvmppchventry plus in kvmppcsave,restoretm, leading to a stack corruption. Because of this, an attacker with the ability run code in kernel space of a guest VM can cause the host kernel to pani...

Design/Logic Flaw

KVM in the Linux kernel on Power8 processors has a conflicting use of HSTATEHOSTR1 to store r1 state in kvmppchventry plus in kvmppcsave,restoretm, leading to a stack corruption. Because of this, an attacker with the ability run code in kernel space of a guest VM can cause the host kernel to pani...

CVE-2020-8834

Affected software: Linux kernel KVM for PowerPC (KVM with Book3S HV on Power8). Vulnerability arises from conflicting use of HSTATE_HOST_R1 to store r1 state in kvmppc_hv_entry and in kvmppc_save_tm()/kvmppc_restore_tm, leading to stack corruption. Consequence: a guest VM kernel-space code execut...

CVE-2020-8834 Linux kernel KVM Power8 conflicting use of HSTATE_HOST_R1

KVM in the Linux kernel on Power8 processors has a conflicting use of HSTATEHOSTR1 to store r1 state in kvmppchventry plus in kvmppcsave,restoretm, leading to a stack corruption. Because of this, an attacker with the ability run code in kernel space of a guest VM can cause the host kernel to pani...

CVE-2020-8834

KVM in the Linux kernel on Power8 processors has a conflicting use of HSTATEHOSTR1 to store r1 state in kvmppchventry plus in kvmppcsave,restoretm, leading to a stack corruption. Because of this, an attacker with the ability run code in kernel space of a guest VM can cause the host kernel to pani...

LSN-0065-1: Kernel Live Patch Security Notice

Andrew Honig reported a flaw in the way KVM Kernel-based Virtual Machine emulated the IOAPIC. A privileged guest user could exploit this flaw to read host memory or cause a denial of service crash the host. CVE-2013-1798 It was discovered that the KVM implementation in the Linux kernel, when...

LSN-0065-1 Kernel Live Patch Security Notice

Andrew Honig reported a flaw in the way KVM Kernel-based Virtual Machine emulated the IOAPIC. A privileged guest user could exploit this flaw to read host memory or cause a denial of service crash the host. CVE-2013-1798 It was discovered that the KVM implementation in the Linux kernel, when...

CVE-2019-14821

An out-of-bounds access issue was found in the way Linux kernel's KVM hypervisor implements the Coalesced MMIO write operation. It operates on an MMIO ring buffer 'struct kvmcoalescedmmio' object, wherein write indices 'ring-first' and 'ring-last' value could be supplied by a host user-space...

qemu-kvm security and bug fix update

0.12.1.2-2.506.el610.7 - kvm-slirp-disable-tcpemu.patch bz1791680 - kvm-slirp-add-slirpfmt-helpers.patch bz1798966 - kvm-tcpemu-fix-unsafe-snprintf-usages.patch bz1798966 - Resolves: bz1791680 QEMU: Slirp: disable emulation of tcp programs like ftp IRC etc. rhel-6 - Resolves: bz1798966...

CVE-2020-2732

A flaw was discovered in the way that the KVM hypervisor handled instruction emulation for an L2 guest when nested virtualisation is enabled. Under some circumstances, an L2 guest may trick the L0 guest into accessing sensitive L1 resources that should be inaccessible to the L2 guest...

DEBIAN-CVE-2020-2732

A flaw was discovered in the way that the KVM hypervisor handled instruction emulation for an L2 guest when nested virtualisation is enabled. Under some circumstances, an L2 guest may trick the L0 guest into accessing sensitive L1 resources that should be inaccessible to the L2 guest...

CVE-2020-2732

A flaw was discovered in the way that the KVM hypervisor handled instruction emulation for an L2 guest when nested virtualisation is enabled. Under some circumstances, an L2 guest may trick the L0 guest into accessing sensitive L1 resources that should be inaccessible to the L2 guest...

Design/Logic Flaw

A flaw was discovered in the way that the KVM hypervisor handled instruction emulation for an L2 guest when nested virtualisation is enabled. Under some circumstances, an L2 guest may trick the L0 guest into accessing sensitive L1 resources that should be inaccessible to the L2 guest...

CVE-2020-2732

A flaw was discovered in the way that the KVM hypervisor handled instruction emulation for an L2 guest when nested virtualisation is enabled. Under some circumstances, an L2 guest may trick the L0 guest into accessing sensitive L1 resources that should be inaccessible to the L2 guest...