kernel: kvm: reporting emulation failures to userspace

It was found that reporting emulation failures to user space could lead to either a local CVE-2014-7842 or a L2-L1 CVE-2010-5313 denial of service. In the case of a local denial of service, an attacker must have access to the MMIO area or be able to access an I/O port. Please note that on certain...

kernel: kvm: noncanonical rip after emulation

A flaw was found in the way the Linux kernel's KVM subsystem handled non-canonical addresses when emulating instructions that change the RIP for example, branches or calls. A guest user with access to an I/O or MMIO region could use this flaw to crash the guest...

kernel: kvm: insufficient sysenter emulation when invoked from 16-bit code

It was found that the Linux kernel KVM subsystem's sysenter instruction emulation was not sufficient. An unprivileged guest user could use this flaw to escalate their privileges by tricking the hypervisor to emulate a SYSENTER instruction in 16-bit mode, if the guest OS did not initialize the...

QEMU NE2000 NIC Emulation Heap Based Buffer Overflow Vulnerability

No description provided by source...

qemu -- denial of service vulnerability in Q35 chipset emulation

Prasad J Pandit, Red Hat Product Security Team, reports: Qemu emulator built with the Q35 chipset based pc system emulator is vulnerable to a heap based buffer overflow. It occurs during VM guest migration, as more16 bytes data is moved into allocated 8 bytes memory area. A privileged guest user...

xen security update

CentOS Errata and Security Advisory CESA-2015:2065 Updated xen packages that fix one security issue are now available for Red Hat Enterprise Linux 5. Red Hat Product Security has rated this update as having Important security impact. A Common Vulnerability Scoring System CVSS base score, which...

Gentoo Security Advisory GLSA 201510-02

Gentoo Linux Local Security Checks GLSA 201510-02 SPDX-FileCopyrightText: 2015 Eero Volotinen Some text descriptions might be excerpted from a referenced sources, and are Copyright C by the respective right holders. SPDX-License-Identifier: GPL-2.0-or-later ifdescription...

SUSE SLED11 / SLES11 Security Update : xen (SUSE-SU-2015:1853-1)

xen was updated to fix nine security issues. These security issues were fixed : - CVE-2015-4037: The slirpsmb function in net/slirp.c created temporary files with predictable names, which allowed local users to cause a denial of service instantiation failure by creating /tmp/qemu-smb.- files befo...

[SECURITY] Fedora 22 Update: qemu-2.3.1-7.fc22

QEMU is a generic and open source processor emulator which achieves a good emulation speed by using dynamic translation. QEMU has two operating modes: Full system emulation. In this mode, QEMU emulates a full system for example a PC, including a processor and various peripherials. It can be used ...

Oracle Linux 6 : qemu-kvm (ELSA-2015-1924)

The remote Oracle Linux 6 host has packages installed that are affected by a vulnerability as referenced in the ELSA-2015-1924 advisory. 0.12.1.2-2.479.el67.2 - kvm-net-add-checks-to-validate-ring-buffer-pointers-CVE-.patch bz1263274 - Resolves: bz1263274 CVE-2015-5279 qemu-kvm: qemu: Heap overfl...

CentOS 5 : kvm (CESA-2015:1925)

Updated kvm packages that fix one security issue are now available for Red Hat Enterprise Linux 5. Red Hat Product Security has rated this update as having Important security impact. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available from t...

qemu: Heap overflow vulnerability in ne2000_receive() function

A heap buffer overflow flaw was found in the way QEMU's NE2000 NIC emulation implementation handled certain packets received over the network. A privileged user inside a guest could use this flaw to crash the QEMU instance denial of service or potentially execute arbitrary code on the host...

Important: Red Hat Security Advisory: qemu-kvm security update

Updated qemu-kvm packages that fix one security issue are now available for Red Hat Enterprise Linux 6. Red Hat Product Security has rated this update as having Important security impact. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available...

Important: Red Hat Security Advisory: kvm security update

Updated kvm packages that fix one security issue are now available for Red Hat Enterprise Linux 5. Red Hat Product Security has rated this update as having Important security impact. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available from t...

qemu: Heap overflow vulnerability in ne2000_receive() function

A heap buffer overflow flaw was found in the way QEMU's NE2000 NIC emulation implementation handled certain packets received over the network. A privileged user inside a guest could use this flaw to crash the QEMU instance denial of service or potentially execute arbitrary code on the host...

Important: Red Hat Security Advisory: qemu-kvm-rhev security update

Updated qemu-kvm-rhev packages that fix one security issue are now available for Red Hat Enterprise Linux OpenStack Platform 5.0 for Red Hat Enterprise Linux 6. Red Hat Product Security has rated this update as having Important security impact. A Common Vulnerability Scoring System CVSS base scor...

Updated qemu packages fixes security vulnerabilities

Qinghao Tang of QIHU 360 Inc. discovered an infinite loop issue in the NE2000 NIC emulation. A privileged guest user could use this flaw to mount a denial of service QEMU process crash. CVE-2015-5278 Qinghao Tang of QIHU 360 Inc. discovered a heap buffer overflow flaw in the NE2000 NIC emulation....

MGASA-2015-0397 Updated qemu packages fixes security vulnerabilities

Qinghao Tang of QIHU 360 Inc. discovered an infinite loop issue in the NE2000 NIC emulation. A privileged guest user could use this flaw to mount a denial of service QEMU process crash. CVE-2015-5278 Qinghao Tang of QIHU 360 Inc. discovered a heap buffer overflow flaw in the NE2000 NIC emulation....

The vulnerability of the QEMU hardware emulation software allows a hacker to trigger a maintenance failure or execute arbitrary code.

The vulnerability of the ne2000receive function in the QEMU hardware emulation software is caused by a buffer overflow in the dynamic memory. Exploiting this vulnerability can allow an attacker acting locally to cause a service failure or execute arbitrary code...

[SECURITY] Fedora 23 Update: qemu-2.4.0.1-1.fc23

QEMU is a generic and open source processor emulator which achieves a good emulation speed by using dynamic translation. QEMU has two operating modes: Full system emulation. In this mode, QEMU emulates a full system for example a PC, including a processor and various peripherials. It can be used ...